[From the U.S. Government Printing Office, www.gpo.gov]



              Hench, John E.







                      NATURAL RESOURCES MAPPING AND STUDIES OF
                     FLORISITICS AND PHYSIOGNOMY AT FLAG PONDS
                       NATURAL AREA, CALVERT COUNTY, MARY
                                    Prepared by          
                                John E. Hench, Ph.D.
                                  4313 Wendy Court
                             Monrovia, Maryland 21770.

                                    Submitted to
                              David C. Brownlee, Ph.D.
                        Department of Planning and zoning
                             Calvert County Court House
                          Prince Frederick, Maryland 20678

                                 December 24, 1990







                                                         COASTAL ZONE
                                                     INFORMATION CENTER







           QK
           63
           H46
           1990
 









          CONTRACT SYNOPSIS


               This report was prepared to satisfy the requirements of the
          proposal (Attachment A) submitted to the Calvert County
          Department of Planning and Zoning on May 8, 1990. As stated in
          the proposal, the goal and objectives of the project were:

          Goal


               To acquire natural resources data necessary to objectively
          access impacts of development in Flag Ponds Natural Area, Calvert
          County, Maryland.

          Oblectives

               To prepare 111 = 2001 scale natural resource plates for Flag
          Ponds Natural Area including (1) topography with existing
          development, (2) soils, (3) slope, (4) wetlands, (5) 100 year
          floodplain and drainage, (6) black-and-white leaf-on and leaf-off
          aerial photography, and (7) maj,or plant communities.

               To describe the floristics and physiognomy of major plant
          communities at Flag Ponds Natural Area.

               To establish a permanent plot system at Flag Ponds Natural
          Area.



          METHODOLOGY

               Methods for preparing natural resource plates and describing
          floristics and physiognomy are described in the proposal
          (Attachment A).



          SUMMARY OF RESULTS AND FINDS


          Natural Resource Plates

               The following prime source material, at a scale of 111
          2001, was obtained for use in p  reparing the natural resource
          plates:


          1.   Soils,
          2.   U.S. Fish and Wildlife Service, National Wetlands Inventory
               wetlands,
          3.   Black-and-white leaf-on aerial photography dated March 1990,
          4.   Black-and-white leaf-off aerial photography dated August
               1988.








          Using the prime source information, the original base map for the
          park, and results of the survey of floristics and physiognomy,
          the following natural resource plates were prepared:

          1.  Park base map with neat line, map title, scale, and north
              arrow,
          2.  Slope,.
          3.  Composite map showing major soil groups (upland, alluvial,
              unclassified, and coastal), vegetation/habitat types, and
              water regime,
          4.  Locations of permanent plots,
          5.  Direction of major drainage and approximate 100 year
              floodplain.


          Descriptions of Floristics and Physiognomy

              A total of 136 man-hours were spent setting-up and
          inventorying 30 permanent plots (Table 1). During the field work
          53 herbaceous species were noted (Table 2). Of these, 13 were
          identified only to genus because they were not flowering during
          the site*visits. Two species, Aster sagittifolius and Lemna
          trisulca, are considered by the Maryland Department of Natural
          Resources, Forest, Park and Wildlife Service, Maryland Natural
          Heritage Program, as highly rare in Maryland. The latter species
          is also listed as State Endangered. Aster sacrittifolius occured
          on plot J-10 in strata B whereas Lemna trisulca. occured on plots
          G-2, G-4, H-3, H-4, 1-5, J-7, and J-8 in strata A. Frequency (%)
          [100mi/n where m = total number of plots on which the ith species
          occurs, and n = total number of plots sampled (15)] and relative
          frequency (%) [100m*/Zmi] for each herbaceous species are
          presented by strata [A = elevations < 7.62 meters; B = elevations
          > 7.62 meters] in Table 3.

              A total of 50 species of trees [a woody stem > 6.4 meters
          tall], shrubs [a woody stem or stems < 6.4 meters tall], and
          vines were noted during the plant inventory (Table 4). Density
          (number/hectare) (y /an where y = shrubs tallied for the
          ith species on n plots; a = plot area in hectares (0.0016
          hectares); n = total number of plots sampled (15)], relative
          density (%) (100yI/y_y;], and importance value [relative frequency
          + relative density/2] are presented by strata for shrubs in Table
          5. Basal area (meters square/hectare) [Fxi/n where F = 2 meters
          square/hectare; x; = trees tallied for the ith species on n
          points; n = total number of points sampled (15)], relative basal
          area (%) (l00xj/Zx;], density (number/hectare) [yi/an where y'
          trees tallied for the ith species on n plots; a = plot area in
          hectares (.031416)], relative density (%), frequency (%),
          relative frequency (%), importance value (%) [relative basal area
          + relative density + relative frequency/3]1 and S[3@adratic average
          average diameter breast height (centimeters) [14RXFx'/y; where R
           10 meters) are presented for trees by strata in Ta@le 6. Also


                                           2











          Table 1.
          Permanent plot coordinates, strata occupied (A= lowland, B=
          upland, see text), and dates established at Flag Ponds, Calvert
          County, Maryland, 1990.



          Plot Number               Strata              Date Established


             B-5                       B                      11 May
             C-5                       B
             C-6                       B
             E-5                       B                      23 Apr
             E-6                       B                        if
             F-3                       B                      24 Apr
             F-4                       B                      23 Apr
             F-5                       B                        It
             G-2                       A                       2 Jun
             G-4                       A                        if
             H-3                       A                        If
             H-4                       A                        if
             H-7                       B                      23 Apr
             H-8                       B                        it
             H-9                       B                        It
             H-10                      B                        if
             1-5                       A                      11 May
             1-6                       A
             1-7                       A
             1-8                       B                      23 Apr
             I-10                      B                      24 Apr
             J-5                       A                      11 May
             J-7                       A                       2 Jun
             J-8                       A                        if
             J-10                      B                      24 Apr
             K-6                       A                      11 May
             K-7                       A                       2 Jun
             K-8                       A                       1 Jun
             K-9                       A                        it
             L-9                       A                       9 Sep


















                                            3









          -Table 2.
          List of herbaceous plants inventoried on permanent plots, Flag
          Ponds Nature Park, Calvert County, Maryland, 1990.

          Latin Name                          Common.Name

          Allium sp.                          Wild Garlic
          Ammophila. breviligulata.           American beachgrass
          Arisaema. sp.                       Indian Turnip
          Arisaema. atrorubens                Jack-in-the-pulpit
          Arisaema. triphyllum                Jack-in-the-pulpit
          Aster sp.                           Aster
          Aster sagittifolius                 Arrow-leaved Aster
          Athyrium platyneuron                Ebony spleenwort
          Caltha. palustris                   Marsh marigold
          Carex sp.                           Sedge
          Cenchrus tribuloides                Dune sandbur
          Ceratophyllum demersum              Honewort
          Cryptotaenia. canadensis            Wild chervil
          Dentaria diphylla                   Two-leaved toothwort
          Desmodium nudiflorum                Naked-leaved tick-trefoil
          Digitaria. sp.                      Crabgrass
          Diodia teres                        Rough buttonweed
          Equisetum sp.                       Scouring rush
          Erigeron canadensis                 Horseweed
          Eupatorium sp.                      Thoroughwort
          Euphorbia maculata.                 Eyebane.
          Fragaria. virginiana.               Wild strawberry
          Galearis spectabilis                Showy orchis
          Galium sp.                          Cleavers bedstraw
          Galium circaezans                   Wild licorice
          Hibiscus moscheutos                 Rose mallow
          Impatiens capensis                  Spotted touch-me-not
          Lathyrus japonicus                  Beach pea
          Lemna. sp.                          Duckweed
          Lemna. minor                        Smaller duckweed
          Lemna. trisulca.                    Star duckweed
          Lycopodium obscurum                 Groundpine
          Menispermum canadense.              Canada moonseed
          Mitchella. repens                   Twin-berry
         .Oxalis sp.                          Wood-sorrel
          Phragmites australis                Wild reed
          Podophyllum. peltatum               May-apple
          Polygonum persicaria,               Lady's thumb
          Polystichum acrostichoides          Christmas fern
          Ranunculus sp.                      Buttercup
          Ranunculus arbortivus               Kidney-leaved Crowfoot
          Ranunculus septentrionalis          Swamp buttercup
          Saururus cernuus                    Water dragon
          Scirpus sp.                         Bulrush
          Sporobolus sp.                      Dropseed
          Symplodarpus foetidus               Skunk cabbage
          Tovara. virginiana.                 Virginia knotweed
          Typha angustifolia.                 Narrow-leaved cat-tail
          Typha latifolia.                    Common cat-tail
          viola sp.                           Violet

                                                 4








         Table 2.  Continued.

         Viola conspera                American dog violet
         Viola rotundifolia            Round-leaved yellow violet
         Xanthium sp.                  Cocklebur



















































                                         5













                 Table 3.
                                                                Rel.
                 Herbaceous                            Freq.     Freq.
                 Species             Strata            M         (-0.)
                 ------------------------------------------------

                 -------------------  7 -----------------------------
                 Allium                  A             6.67      2.27
                 sp.                     B              -         -
                 ------------------------------------------------
                 Ammophila               A             6.67      2.27
                 breviligulata           B              -         -
                 ------------------------------------------------
                 Arisaema                A              -         -
                 sp.                     B             33.33     6.02
                 -------------------  7  ----------------------------
                 Arisaema                A              -         -
                 atrorubens              B             6.67       1.2

                 ------------------------------------------------
                 Arisaema                A              -         -
                 triphyllum              B             6.67       1.2
                 ------------------------------------------------

                 Aster                   A              -         -
                 sp.                     B             53.33     9.64
                 ------------------------------------------------
                 Aster                   A.             -         -
                 sagittifolius           B             6.67       1.2
                 ------------------------------------------------
                 Athyrium                A              -         -
                 platyneuron             B             6.67       1.2
                 ------------------------------------------------
                 Caltha                  A             6.67      2.27
                 palustris               B             6.67       1.2
                 ------------------------------------------------
                 Carex                   A             6.67      2.27
                 sp.                     B             6.67       1.2
                 ------------------------------------------------
                 Cenchrus                A             6.67      2.27
                 tribuloides             B              -         -

                 ------------------------------------------------
                 Ceratophyllum           A              -         -
                 demersum                B             6.67       1.2

                 ------------------------------------------------
                 Cryptotaenia            A              -
                 canadensis              B             6.67       1.2

                 ------------------------------------------------
                 Dentaria                A                        -
                 diphylla                B               20      3.61
                 ------------------------------------------------











                                              6











                  Table 3. Continued.                              Rel.
                  Herbaceous                             Freq.      Freq.
                  Species              Strata             M
                  ------------------------------------------------

                  -------------------------------     ; -----------------
                  Desmodium                A               -         -
                                           B             13.33      2.41

                  ------------------------------------------------
                  Digitaria                A              6.67      2.27
                  sp.                      B               -
                  ------------------------------------------------
                  Diodia                   A              6.67      2.27
                  teres                    B               -         -

                  ------------------------------------------------
                  Equisetum                A               -         -
                  sp.                      B              6.67       1.2
                  ------------------------------------------------
                  Erigeron                 A              6.67      2.27
                  canadensis               B               -         -
                  7------   7----------------------------------------
                  Eupatorium               A              6.67      2.27
                  sp.                      B              6.67       1.2
                  -------------------------------------------------
                  Euphorbia                A              6.67      2.27
                  maculata                 B               -         -

                  ------------------------------------------------
                  Fragaria                 A               -         -
                  virginiana               B             13.33      2.41
                  ------------------------------------------------
                  Galearis                 A               -         -
                  spectabilis              B              6.67       1.2
                  ------------------------------------------------
                  Galium                   A             13.33      4.54
                  sp.                      B             33.33      6.02
                  ------------------------------------------------
                  Galium.                  A               -         -
                  circaezans               B             26.67      4.82

                  ------------------------------------------------
                  Hibiscus                 A             33.33      11.36
                  moscheutos               B               -         -

                  ------------------------------------------------
                  Impatiens                A
                  capensis                 B             13.33      2.41
                  ------------------------------------------------
                  Lathyrus                 A              6.67      2.27
                  japonicus                B               -         -
                  ------------------------------------------------










                                                 7














                 Table 3. Continued.
                                                               Rel.
                 Herbaceous                           Freq.     Freq.
                 Species             Strata            (-0.)     (5-0
                 ------------------------------------------------

                 ------------------------------------------------
                 Lemna.                 A                20      6.82
                 sp.                    B
                 ------------------------------------------------
                 Lemna                  A              6.67      2.27
                 minor                  B               -         -

                 ------------------------------------------------
                 Lemna                  A             46.67      15.9
                 trisulca               B               -         -

                 ------------------------------------------------
                 Lycopodium             A               -         -
                 obscurum               B              6.67       1.2

                 ------------------------------------------------
                 Menispermum            A              6.67      2.27
                 canadense              B               -         -

                 ------------------------------------------------
                 Mitchella              A             26.67      9.09
                 repens                 B              6.67       1.2
                 ------------------------------------------------
                 Oxalis                 A               -         -
                 sp.                    B              6.67       1.2
                 -------------------------------------------------
                 Phragmites             A             13.33      4.54
                 australis              B               -         -

                 ------------------------------------------------
                 Podophyllum            A               -         -
                 peltatum               B             33.33      6.02
                 ------------------------------------------------
                 Polygonum              A               -         -
                 persicaria,            B              6.67       1.2
                 ------------------------------------------------
                 Polystichum            A               -         -
                 acrostichoides         B             26.67      4.82

                 ------------------------------------------------
                 Ranunculus             A
                 sp.                    B                20      3.61
                 ------------------------------------------------
                 Ranunculus             A                         -
                 abortivus              B                20      3.61

                 ------------------------------------------------









                  Table 3. Continued.                           Rel.
                  Herbaceous                          Freq.      Freq.
                  Species            Strata            (-0.)     (-0.)
                  -------------------------------    -----------------

                  ------------------------------------------------
                  Ranunculus             A              -         -
                  septentrionalis        B             6.67       1.2
                  ------------------------------------------------
                  Saururus               A              -         -
                  cernuus                B            13.33      2.41

                  ------------------------------------------------
                  Scirpus                A             6.67      2.27
                  sp.                    B              -         -
                  ------------------------------------------------
                  Sporobolus             A             6.67      2.27
                  sp.                    B              -         -
                  ------------------------------------------------
                  Symplocarpus           A              -         -
                  foetidus               B            13.33      2.41

                  ------------------------------------------------
                  Tovara                 A              -         -
                  virginiana             B            13.33      2.41
                  ------------------------------------------------
                  Typha                  A                20     6.82
                  angustifolia           B
                  ------------------------------------------------
                  Typha                  A             6.67      2.27
                  latifolia              B              -         -

                  ------------------------------------------------
                  viola                  A             6.67      2.27
                  sp.                    B            46.67      8.43
                  ------------------------------------------------
                  viola                  A                        -
                  conspera               B                20     3.61
                  ------------------------------------------------
                  Viola                  A
                  rotundifolia           B             6.67       1.2

                  ------------------------------------------------
                  Xanthium               A             6.67      2.27
                                         B

                  ------------------------------------------------


















                                              9








           Table 4.

           List of trees, shrubs and vines inventoried on permanent plots at
           Flag Ponds Nature Park, Calvert County, Maryland, 1990.

           Latin Name                           Common Name

           Acer rubrum                          Red Maple
           Amelanchier    sp.                   Shadbush
           Asimina. triloba                     Pawpaw -
           Campsis radicans                     Trumpet Creeper
           Carpinus carolinia.                  American hornbeam
           Carya glabra.                        Pignut hickory
           Cephalanthus occidentalis            Button bush
           Cornus florida.                      Flowering dogwood
           Cornus stolonifera                   Red osier
           Diospyros virginiana                 Common persimmon
           Euonymus americanus                  Strawberry bush
           Fagus grandifolia                    Beech
           Fraxinus pennsylvanica.              Green ash
           Ilex opaca.                          American holly
           Ilex verticillata                    Black alder
           Juniperus virginiana                 Red cedar
           Kalmia. latifolia                    Mountain laurel
           Lindera. benzoin                     qpicebush
           Liquidambar styraciflua              Sweet gum
           ,Liriodendron tulipifera             Tulip tree
           Lonicera.japonica                    Japanese honeysuckle
           Myrica. cerifera                     Wax-myrtle
           Nyssa sylvatica.                     Black gum
           Ostrya. virginiana.                  Ironwood
           Parthenocissus quinquefolia.         Virginia.Creeper
           Pinus rigida                         Pitch pine
           Pinus taeda.                         Loblolly pine
           Pinus virgin   iana                  Virginia Pine
           Platanus oc6identalis                Sycamore
           Prunus serotina.                     Black cherry
           Prunus virginiana.                   Choke Cherry
           Quercus   sp.                        Oak
           Quercus   alba                       White oak
           Quercus   falcata.                   Spanish oak
           Quercus   marylandica                Black jack oak
           Quercus   phellos                    Willow oak
           Quercus   prinus                     Chestnut oak
           Quercus   rubra.                     Red oak
           Rhus copallina                       Dwarf sumac
           Rhus radicans                        Poison ivy
           Robinia pseudo-acacia                Black locust
           Salix nigra.                         Black willow
           Sambucus canadensis                  Common elder
           Sassafrass albidum                   Sassafrass
           Smilax rotundifolia                  -Common greenbrier
           Ulmus dmericana.                     American elm
           vaccinium corymbosum                 Highbush blueberry
           Viburnum acerifolium                 Maple-leaved viburnum
           Viburnum prunifolium                 Blackh@aw
           Vitis sp.                            Grape

                                                   10







        Table 5.

        Woody                                               Rel,                   Rel   Im ortance
        Smies                                  Densit      Density     Frey.       Fre      Ulue
          7m  tall            Strata             (#/haT       (-0.)      ( %        (%@-
        ----------------------     : ---------------------      ------------------------------
        Acer                      A                -                      -          -         -
        rubrum                    B            6666.33        8.64     46.67        7.29      7.96
        Amelanchior               A                -           -          -          -
        sp.                       B                1000       1.36     13.33        2.08      1.72
          7-7 ----------------------------------------------------------------------
        Asimina                   A                500        2.56       6.67       3.03        2.8
        triloba                   B           12333.33      16.82      66.67       10.42 ---- 13.62
        Campsis                   A            1666.67        8.55     13.33        6.06      7.31
        radicans                  B                -           -          -
                  ------------- -----------------------------------------------------
        carpinus                  A                -           -                     -
        caroliniana.              B           11333.33      15.45          40       6.25     10.85
        Carya                     A                -           -
        sp                        B                500        0.68 ------- 20 ----- 3.13 ----- 1.91
        Cma                       A                -           -
        gla ra                    B            2333.33        3.18 ------- 40 ----- 6.25      4.72
        Cepl@alanthVs             A            1166.67        5.98     13.33        6.06      6.02
        occidentalis              B                -           -          -          -
        ----------     -----------------------                --------------------------------
        CornVs                    A                -           -
        florida                   B            2833.33        3.86         40       6.25      5.06
        Cornus                    A                1000       5.13       6.67       3.03      4.08.
        stolonifera               B                -           -          -          -
          7-------------------------------------------------------------------------
        Diospy.Vos                A            @ 166.67       0.85       6.67       3.03      1.94
        virginiana                B                -           -          -          -
                    ----------- -----------------------------------------------------
        Euonymus                  A              833.33       4.27       6.67       3.03      3.65
        americanus                B            1833.33         2.5       6.67       1.04      1.77
        Fagus                     A              333.33       1.71     13.33        6.06      3.88
        grandifolia               B            1333.33        1.82         20 ----- 3.13 ----- 2.47
        Fraxinus                  A            2333.33      11.96      26.67- - 12.12        12.04
        pennsylvanica             B                -                      -          -
                        -------- -----------------------------------------------------








        Table 5. Continued.
        Woody                                                  Rel                    Rel. Importance
        Species                                  DensitT     Density      Fre          Fre      value
           <7m tall             Strata            (#/ha         ( -0. ) @   (%71 .     (%Y,

        ---------------------------------------------------------------------------
        Ilex                        A                 -          -                      -           -
        opaca                       B            7666.67       10.45          80       12.5       11.48
        Ilex                        A                2500      12.82        6.67       3.03        7.92
        verticillata                B                 -                      -          -           -
                                            ------------------------------------------------
             7-----------------------
        JVnipeVus                   A             166.67        0.85        6.67       3.03        1.94
        virginiana                  B                 -          -           -          -           -
                      ----------- -----------------------------------------------------
        Kalmia                      A                 -          -           -          -           -
        latifolia                   B             333.33        0.45        6.67       1.04        0.75
        ---------------------------------------------------------------------------
        LindeVa                     A             333.33        1.71        6.67       3.03        2.37
        benzoin                     B            8166.67       11.14      33.33        5.21        8.17
        ---------------------------------------------------------------------------
        Li4uidambar                 A            1666.67        8.55      13.33        6.06        7.31
        styraciflua                 B             333.33        0.45        6.67       1.04        0.75
        Myrica.                     A            3666.67        18.8          20       9.09        13.95
        cerifera                    B                 -          -           -          -           -
        ----------------------------------- ---------------------------------------                                                CN
        Nyssa                       A             166.67        0.85        6.67       3.03        1.94
        sylvatica                   B                 -          -           -          -           -
                    --------- -- -----------------------------------------------------
        Ostrya.                     A                 -          -           -          -           -
        virginiana                  B             166.67        0.23        6.67       1.04        0.63
        PaVthenocissus              A                 -          -          6.67       1.04         -
        quinquefolia                B             666.67        0.91      13.33        2.08         1.5
        Pinus                       A             166.67        0.85        6.67       3.03,       1.94
        taeda                       B                 -          -           -          -           -
        ---------------------------------------------------------------------------
        Prunus                      A             666.67        3.42        6.67       3.03        3.22
        serotina                    B                 -          -           -          -           -
        ---------------------------------------------------------------------------
        Pi;unus                     A                 -          -           -          -           -
        Virginiana                  B            5166.67        7.04      66.67        10.42       8.73
                       ------------------------------------------------------------------
        Quercus                     A                 -          -           -          -           -
        sp                          B             166.67        0.23        6.67       1.04        0.63

        Quercus                     A                 -          -           -          -           -
        alba                        B             166.67        0.23        6.67       1.04        0.63
        -----------------------------------------------------------------------------------








        Table 5. Continued.
        Woody                                                   Rel,                    Re1    Immtance
        Species                                   DensitT     Density       Frey.       Fre        alue
          <7m tall              Strata                           M           (%          (%@-         %
        - --------------------------                                          - -----

        ---------------------------------------------------------------------------
        ?
          uercus                    A              166.67        0.85        6.67        3.03        1.94
          alcata                    B              166.67        0.23        6.67        1.04,       0.63
          --------------------------------------------------                ?------------------------
        QueVcus                     A              333.33        1.71        6.67        3.03        2.37
        marilandica                 B                  -           -          -           -           -

        Quercus                     A                  -           -          -           -           -
        prinus                      B                  500       0.68       13.33        2.08        1.38
          --------------------------------------------------------------------------
        Quercus                     A                  -           -          -           -           -
        rubra                       B              166.67        0.23        6.67        1.04        0.63
        ---------------------------------------------------------------------------
        Rhus                        A              166.67        0.85        6.67        3.03        1.94
        copallina                   B                  -           -          -           -           -
                       -----------------------------------------------------------------
        Rhus                        A                  -           -         6.67        3.03         -
        radicans                    B                 1000       1.36       13.33        2.08        1.72
        ---------- ----------------------------------------------------------------
        Salix                       A                  500       2.56        6.67        3.03        2.79
        nigra                       B                  -           -          -           -           -
                      ------------------------------------------------------------------
        Sassafrass                  A                  -           -          -           -           -
        albidum                     B              333.33        0.45       13.33        2.08        1.27
            -------------------------------------------------------------------------
        Smilax                      A                  -           -          -           -           -
        rotundifolia                B             5666.67        7.72       33.33        5.21        6.46
                         ---------------------------------------------------------------
        ulmu@;                      A              333.33        1.71       13.33        6.06        3.88
        americana                   B                  -           -          -           -
        ----  7-7 --------------------------------------------------------------------
        Vaccinium                   A                  -           -          -           -           -
        corumbosum                  B              166.67         .0.23      6.67        1.04        0.63
                       -----------------------------------------------------------------
        Viburnum                    A                  -           -          -           -           -
        acerifolium                 B                 2500         3.4      33.33        5.21        4.31
        ---------------------------------------------------------------------------
        vibuVnum                    A              166.67        0.85        6.67        3.03        1.94
        prunifolium                 B              166.67        0.23        6.67        1.04        0.63
           --------------------------------------------------------                  :7  ----------------
        Vitis                       A                  500       2.56        6.67-       3.03        2.79
       .sp.                         B                  -
            --------------------------------------------------------------------------------


        Stand                       A                19500
                                    B            73330.33



                                                                                                          %--4T




       Table 6.
       Woody                                   Basal     Rel.               Rel,                 Rel. Importance       Avg.
       Mcies                                   Area      B.A.   Densit     Density     Freq.     Fre      value      D.B.
       > m tall             Strata             (m/ha)             (#/hay                                    M        (CM)

       -----------------------------------------------------------------------------------------------------
       Acer                    A                2.4     19.15     89.13     27.81         40     18.75      21.9     18.51
       rubrum                  B               1.47      4.81     48.81       7.52     53.33      8.69      7.01     24.47
       --7-7 ------------------------------------------------------------------------------------------------
       Asimina                 A                -         -         -          -         -         -          -
       triloba                 B               0.13      0.44      2.12       0.33      6.67      1.09      0.62
             -------------------------------------------------------------------------------------
       Carpinus                A                          -         -          -         -         -          -         -
       caroliniana             B                0.4      1.31     91.24     14.05      66.67     10.87      8.74       7.47
       ----------------------------------------------------------------------------------------------------- -
       Car a                   A                -         -         -          -         -         -          -         -
       glagra                  B               0.26      0.85      4.24       0.65      6.67      1.09      0.86     28.28
              --------------- -------------------------------------------------------------------------------
       Cornus                  A                -         -        2.12       0.66      6.66      3.13      1 26        -
       florida                 B               0.67      2.19     89.13     13.73      66.67     10.87      8:93     10.28
        7 ---------------------------------------------------------------------------------------------------
       DiospyVos               A                -         -         -          -         -         -        --
       virginiana              B               0.13      0.43     10.61       1.63      6.67      1.09      1.05           4
                          --------------------------------------------------------------------------------------
       Fagus                   A                -         -         -                              -          -         -
       grandifolia             B               1.07       3.5     31.83        4.9     46.67      7.61      5.34     20.65
             7------------------------------------------------------------------------------------------------
       Fraxinus                A               4.53     36.15     89.13     27.81         40     18.75     27.57     25.44
       pennsylvanica           B               2.93      9.59     48.81       7.52        20      3.26      6.79     27.66
                   -------------------------------------------------------------------------------------------
       Ilex                    A                -         -         -          -         -                    -         -
       opaca                   B               0.93      3.05      67.9     10.46      33.33      5.43      6.31     13.23
             ---------------- ------- ----         -----     -----      ----      -------------------------------------
       Liquidambar             A               3.33     26.58     76.39     23.84      53.33        25     25.14     23.57
       styraciflua             B               4.27     13.99     127.32    19.61      93.33     15.22     16.27     20.66
       -----------------------------------------------------------------------------------------------------
       Liriodendron            A                -         -         -          -                   -          -         -
       tulipifera              B               11.2     36.68     74.27     11.44      73.33     11.69     20.03     43.81
                   ----------- ------------        ----      ----       ----      ----      ---------------------------
       Nyssa                   A               0.13      1.04     14.85       4.63     26.67      12.5      6.06     10.69
       sylvatica               B               0.27      0.88      6.37       0.98        20      3.26      1.71     23.09
       -----------------------------------------------------------------------------------------------------
       Ostrya.                 A
       virginiana              B                                   2.12       0.33      6.67      1.09      0.47
                   ----------- -------------------------------------------------------------------------------
       PjnVs                   A               1.33     10.61     14.85-      4.63     13.33      6.25      7.16     23.09
       .rigida                 B                -                   -          -         -         -          -         -
                   ----------- -------------------------------------------------------------------------------








        Table 6. Continued.
        Woody                                     Basal      R e.1               Rel,                   Rel    Im ortance      Avg.
        Mcies                                     Area       B.A. Densit        Density      Freq.      Fre      Ulue        D.B
        > m tall              Strata              (m/ha)              (#/ha                   %           %
                 ----------

        -7 ---------------------------------------------------------------------------------------------------
        Pinus                    A                 1.2       9.58       21.22      6.62         20       9.38       8.53     26.83
        taeda                    B                1.07        3.5       6.37       0.98      13.33       2.17       2.22     46.19
        Pjnu@;                   A                 -          -          -          -          -          -          -          -
        virginiana               B                0.53       1.73       4.24       0.65      13.33       2.17       1.52

        -----------------------------------------------------------------------------------------------------
        Pla@anus                 A                0.13       1.06                                                   0.35
        occidentalis             B                 -          -                                                      -
        ---           --------------    L -----------------------------------------------------------------------------
        Prunus                   A                 -          -                     -          -          -          -          -
        virginiana               B                0.93       3.05                  1.96      33.33       5.43      .3.48     30.55
                    ----------- --- --------           -----      ------------------------------------------------------
        Quercus                  A                 -                     -          -          -          -          -
        alba                     B                0.13       0.43       2.12       0.33       6.67       1.09       0.62
             -------------------------------------------------------------------------------------------------
        R
          uercus                 A                 -          -          -          -          -          -          -
          Icata                  B                 2.4       7.86       4.24       0.65       6.67       1.09        3.2         40
                ----------------------------------------------------------------------------------------------
        QueVcus                  A                0.13       1.06                                                   0.35
        marilandica              B                 -          -                                                      -
                                   -------------------------------------------------------------------------------                  LO
        Quercus                  A,-               -          -          -          -          -          -          -          -   1-4
        prinus                   B                0.53       0.33       2.12       0.33       6.67       1.09       1.05     56.57
        Quercus                  A                 -          -          -          -          -          -          -          -
        rubra                    B                0.93       3.05       2.12       0.33       6.67       1.09       1.49     74.83
        Robinia                  A                 -          -          -          -          -          -          -          -
        pseudo-acacia            B                                      2.12       0.33       6.67       1.09       0.47
                       -------- -------------------------------------------------------------------------------
        Salix                    A                0.13       1.06       10.61      3.31       6.66       3.13        2.5     12.65
        nigra                    B                 -          -          -          -          -          -          -          -
                    ----------- -------------------------------------------------------------------------------
        Sassafrass               A
        albidum                  B                                      -
                -------------- ------             0.13         2 6      4.24                 13.33---    2.17       2.36         20
        Ulmus                    A                 -                    5.03       1.57       6.66       3.13       1.57
        americana                B                                      4.24       0.65       6.67       1.09       0.58
                  ------------ -------------------------------------------------------------------------------


        Stand                    A               12.53                320.43                                                 22.32
                                 B               30.53                649.35                                                 24.47








          included therein are stand basal area [FZx;/n], stand density
          [@XLl/an  and stand quadratic average diameter at breast height
            _4@@
               Z_ x -, /7
          1V4R      Yi I -

               Ten additional plant species were observed off of the
          permanent plots during the inventory.  These species are given in
          Table 7. Seven species of amphibians,  six species of reptiles,
          30 species of birds, and seven species of mammals were also
          observed. Amphibians and reptiles are  listed in Table 8 whereas
          birds and mammals are listed in Tables 9 and 10, respectively.
          of these, Accipiter striatus and Haliaeetus leucocephalus (Table
          9) are considered rare in Maryland. The latter species is also
          listed as State Endangered and Federal Endangered.


          conclusions

               The information presented herein, coupled with the natural
          resource plates, should allow staff in the Department of Planning
          and Zoning and the Division of Natural Resources to objectively
          evaluate some of the effects of future land-use changes at Flag
          Ponds Natural Area. However, the results of some additional work
          would be useful. The proposed work includes:

          1.   Future visits to plot J-10 during the 1991.growing season to
               verify the presence of Aster sagittifolius.

          2.   Additional standardized plant inventory work within strata
               A and B. These data would allow for the statistical
               -differentiation of plant communities and subsquent mapping
               of plant community boundaries. The natural resource plate
               depicting vegetation/habitat types illustrates gross
               physiognomy which may not correlate well with floristic
               differences between communities.

          3.   An effort should be made to evaluate the effects of future
               development in the park on forest interior bird species.
               These species include Empidponax virescens, Vireo olivaceus,
               Mniotilta varia, Parula americana, Seiurus m@o`tacilla,
               Seiurus au'@`ocapillus, Oporornis formosus, and Piranga
               olivacea. Forest interior bird species are negatively
               affected by forest fragmentation and the creation of
               edge habitat.
          4.   Using the park base map, soils map, U.S. Fish and Wildlife
               Service National Wetlands Inventory map, and aerial
               photography, an effort should be made to develop a
               quantitative history of beach erosion just south of  Long
               Beach. It appears as though structures intalled to   protect
               shoreline property in Long Beach are causing accelerated
               erosion of the park's northernmost shoreline.





                                           16










         Table 7.
         Additional herbaceous plants observed at Flag Ponds, Calvert
         County, Maryland, 1990, that were not located on permanent plots.



         Latin Name                             Common Name


         Maianthemum canadense                  Two-leaved solomon's seal
         Sanguinaria canadensis                 Bloodroot
         Botrychium sp.                         Moonwort
         Aquilegia canadensis                   Wild columbine
         Peltandra virginica                    Arrow-arum
         Althea officinalis                     Marshmallow
         Cypripedium. acaule                    Pink lady's-slipper
         Monarda sp.                            Horsemint
         Chenopodium  album                     Lamb's quarters
         Epigaea repens                         Trailing arbutus
                                                unidentified grasses
                                                unidentified mosses












































                                           17






       '@able 8.
         List of amphibians and reptiles observed at Flag Ponds, Calvert
         County, Maryland, 1990. Additional species observed between 1985-
         1989 are indicated by



         Latin Name                         Common Name                Strata

         Amphibians

         Ambystoma maculata                 Spotted salamander           A
         Hyla cinerea                       Green tree frog              A
         Hyla crucifer                      spring peeper                B
         Hyla chrysoscelis                  Gray tree frog               B
         Pseudacris triseriata feriarum     Upland chorus frog           A
         Rana catesbeiana                   Bull frog                    A
         Rana utricularia                   Southern leopard frog        A

         Reptiles

         Agkistrodon contortrix             Northern Copperhead          A*
         Chelydra serpentina                Common Snapping Turtle       A
         Cnemidophorus sexlineatus          Six-lined Race Runner        A
         Eumeces laticeps                   Five-lined Skink             A
         Scincella lateralis                Ground Skink                 A*
         Terrapene carolina                 Eastern Box Turtle           A,B




























                                           18










          Table 9.

          List of birds observed at Flag Ponds, Calvert County, Maryland,
          1990.




          Latin Name                           Common Name                Strata

          Accipiter striatus                   Sharp-shinned hawk           B
          Pandion haliaetus                    Osprey                       A
          Haliaeetus leucocephalus             Bald eagle                   A
          Anas platyrhynchos                   Mallard                      A
          Ardea. herodias                      Great blue  heron            A
          Butorides striatus                   Green-backed heron           A
          Meleagris qallopavo                  Wild turkey                  ArB
          Charadrius vociferus                 Killdeer                     A
          Archilochus colubris                 Ruby-throated hummingbird    B
          Melanerpes   carolinus               Red-bellied woodpecker       B
          Empidponax virescens                 Acadian flycatcher           A
          contopus virens                      Eastern Wood-peewee          A,B
          Progne subis                         Purple Martin                A
          corvus ossifragus                    Fish crow                    A
          Parus carolinensis                   Carolina chickadee           B
          Parus bicolor                        Tufted titmouse              B
          Thryothorus.ludovicianus             Carolina wren                B
          Polioptila caerulea.                 Blue-gray gnatcatcher        AfB
          Vireo griseus                        White-eyed vireo             A
          Vireo olivaceus                      Red-eyed vireo               A,B
          Mniotilta. varia                     Black-and-white warbler      B
          Parula. americana                    Northern parula.             A,B
          Dendroica pinus                      Pine warbler                 A,B
          Seiurus motacilla                    Louisiana waterthrush        B
          Seiurus aurocapillus                 Ovenbird                     B
          Oporornis fbrmosus                   Kentucky warbler             B
          Agelaius phoeniceus                  Red-winged blackbird         A
          Quiscalus quiscula.                  Common grackle               A
          Piranqa olivacea                     Scarlet tanager              A,B
          Carduelis tristis                    American goldfinch           A

















                                            19










         Table 10.
         List of mammals observed at Flag Ponds, Calvert County, Maryland,
         1990.




         Sylvilagus floridanus                Eastern cottontail
         Sciurus carolinensis                 (@ray squirrel
         Ondatra zibethicus                   Muskrat
         Vulpes vulpes                        Red fox
         Procyon lotor                        Raccoon
         Mustela vison                        Mink
         Odocoileus virginianus               White-tailed deer









































                                         20









           Attachment A.







                       PROPOSAL FOR NATURAL RESOURCES MAPPING
                           AND STUDIES OF FLORISTICS AND
                    PLANT PHYSIOGNOMY AT FLAG PONDS NATURAL AREA
                              CALVERT COUNTY, MARYLAND




                                John E. Hench, Ph.D.
                                  4313 Wendy Court
                              Monrovia, Maryland 21770






          GOAL

              To acquire natural resources data necessary to objectively
          assess impacts of development in Flag Ponds Natural Area, Calvert
          County, Maryland.




          OBJECTIVES


              To prepare 111 = 2001 scale natural resources plates for Flag
          Ponds Natural Area including (1) topography with existing
          development, (2) soils, (3) slope, (4) wetlands, 100 year flood-
          plain, and major drainage divides, (5) black-and-white leaf-on
          and leaf-off aerial photography, and (6) plant communities.

              To describe the floristics and physiognomy of major plant
          communities at Flag Ponds Natural Area.

              To establish a permanent plot'system at Flag Ponds Natural
          Area.





          BACKGROUND
              Flag Ponds Natural Area encompasses 327 acres on the Western
          Shore of Chesapeake Bay. The site is considered "the most
          environmentally sensitive, diverse, and unique area in the region
          (Calvert County Board of commissioners, 1984:2)." Topographically,
          the park is separated into two distinct areas: a broad, low lying,
          actively accreting, sandy cape and a severely eroded and disected
        .upland terrace. A steep cliff, 80 to 100 feet above sea level and
          oriented in a north-south direction, demarcates a boundary between
          the two areas. Land to the west of the cliffs drains to St.
          Leonard's Creek and Patuxtent River whereas land to the east drains
          directly to,@Chesapeake Bay. Bathymetry has shown that a large shoal*
          ranging 200,feet out at the northern end to 1000 feet out at the
          southern end, is developing off-shore of the southward accreting cape
          (Calvert County Board of Commissioners, 1984). At present, the shoal
          is exposed during extremely low tides. Future enlargement of the
          shoal should result in formation of a new pond east of the existing
          beach.


              Hill (1987) notes that Flag Ponds Natural Area encompasses four
          major community types: (1) tidal saline bay, (2) interdunal --
          including pond, marsh, and swamp, (3) accreting sandy beach, and (4)
          upland deciduous forest. Two State Endangered species, Star duckweed
          (Lemna trisulca) and Northeastern Beach Tiger-beetle (Cincindela d.
          dorsalis), are known from the site. The former species is a Federal





          candidate for Threatened or Endangered status. Shorebirds, osprey
          (Pandion haliaetus), colonial waterbirds, and waterfowl use Flag
      .-,"Ponds seasonally. Numerous species of forest interior birds --
          including Red-shouldered Hawk (Buteo lineatus), Red-eyed Vireo (Vireo
          olivaceus), and Scarlet Tanager (Piranga olivacea) -- nest in the
          upland deciduous forest.

               A Master Plan for Flag Ponds Natural Area was approved by
          the Board of County Commissioners, Calvert County, in November, 1984.
          The document outlines three phases of planned development. Phases I
          (FY 85,86) and II (FY 87,88,89) include entrance road improvements,
          security gates, parking, security residence, loop road system,
          emergency access road to the beach, visitor center with restrooms,
          fishing pier, bathhouse, boardwalk,'and trails. As of autumn 1989,
          Phases I and II had been largely completed. Additional parking,
          trails, primitive camping areas, and picnic facilities are planned
          for Phase III in FY 90 and 91.



          METHODS


          Preparation of Natural Resource Plates

          Project Grid and Base Map

               The Project Consultant (Dr. John E. Hench) will provide Photo
          Science, Inc., Gaithersburg, Maryland, with 111 = 2001 scale topo-
          graphic maps of Flag Ponds Natural Area, 111 = 1,3201 scale soils maps
          (Matthews, 1971), and a 111 =@2,0001 scale U.S. Fish and Wildlife
          Service National Wetlands Inventory Map for the Cove Point
         .Quadrangle. Photo Science, Inc., will identify Maryland State Plane
          Grid coordinates on the original map. Coordinates for the project
          area will be established jointly by Photo Science, Inc., the Project
          Consultant, and Calvert County staff.

               In order to ensure proper registration of all map products, a
          project grid with a grid interval of 5.0 inches will be set up on a
          Wild,TA2 plotting table. The project grid will be punch registered
          with a seven hole punch; all subsquent map products will employ a
          matching set of punch register holes.

               The original topographic map will be checked for accuracy by
          comparing coordinate values on the original map to those on the
          project grid. Photo Science, Inc., will then add a neat line, map
          title, scale, and north arrow using scribe-coat plates and produce a
          composite positive of the base map on-0.004 inch Mylar drafting film.
          The composite will be sumbitted to the Project Consultant for review
          and editing.









                                           2






          Aerial Photography

               The Project Consultant will obtain most recent high altitude
          black-and-white leaf-on and leaf-off aerial photography from Air
          Photographics, Inc., Martinsburg, West Virginia. Photography will
          be enlarged to 111 = 2001 on 0.004 inch Mylar and used to delineate
          existing development and plant community boundaries.


          Soils and Wetlands

               Appropriate sections of soils and wetlands maps will be enlarged
          to 111 = 2001 and carefully matched to the base map. A composite
          positive, including neatline, project grid, and registration, will be
          produced for each on 0.004 inch Mylar. The Project Consultant will
          review and edit this material.


          Slope, Drainage, and Plant Communities

               Photo Science, Inc., will provide the Project Consultant with
          blank sheets of punch registered Mylar. The Project Consultant will
          use these sheets to develop interpretive plates for slope, drainage
          with 100 year floodplain, and plant communities in pencil. Completed
          tracings will be returned to Photo Science, Inc., for the next
          production phase.


          Preparation of Descriptive Legends

               Legends describing mapped attributes will be designed by Photo
          Science, Inc., and the Project Consultant. Completed art work will
          be submitted to Calvert County staff for review and editing.


          Production of Scribe-coat Films

               Photo Science, Inc., will transfer information from the pencil
          tracings to punch registered, stable-base, scribecoat film.
          Completed scribe-coat films, with the corresponding tracing, will be
          submitted to the.Project Consultant for review and editing.


          Production of Peel-coat Films

               To facilitate delineation of broad areas of tone on final map
          sheets, photosensitive peel-coat films will be produced. The peel-
          coat'sheets are punch registered and exposed using an edited, cor-
          rected scribe-coat. After exposure and development, the peel-coat
          film is laid over the original pencil tracings and selected areas of
          final'map sheets a halftone screen tint will be exposed into the
          "window" areas. Completed peel-coat films will be submitted to the
          Project Consultant for review and editing.



                                            3







      @,-'Production of Final Positive Map Sheets

              Photo Science, Inc., will produce final maps at 111 = 2001 on 36
          * 44 inch sheets of photosensitive Mylar. Final sheets will include
          * neat line, Annotated State Plane Grid,' and park boundary. Sheets
          will depict the scribe-coat for each resource attribute and the
          accompanying peel-coat films. Appropriate legend blocks will be
          added to each sheet in a non-image area. Security negatives will be
          produced for each sheet at 111 = 2001 s-cale thereby facilitating
          production of future copies with increased efficiency and reduced
          cost. Calvert County will receive all maps and negatives.



          Descriptions of Floristics and Physiognomy

              The Project Consultant and Field Ecologist (James M. Hill) will
          jointly develop descriptions of floristics and physiognomy for Flag
          Ponds Natural Area. A description of the methodology follows.

              A Geological Survey 7.51 topographic map and Fish and Wildlife
          Service National Wetlands Inventory map were used to establish two
          strata for field sampling. Strata I included areas of the park
          greater than 25 feet in elevation; Strata II included areas less than
          25 feet in elevation. A 111 = 2001 scale base map of Flag Ponds Natu-
          ral Area was then gridded at 500 foot intervals based on the Maryland
          State Plane Grid. Grid columns were labeled A through L; rows were
          labeled 1 through 11. The grid yielded 30 points (grid intersec-
          tions) in Strata I and 25 points in Strata II. Fifteen points were
          then randomly selected from each strata for field sampling. The
          following information will be collected at each of the 30 points:

          Tree species: The basal area, density, frequency, quadratic average.
          diameter atibreast height, and importance value of tree species will
          be obtained;@with a method of forest sampling developed by Eichenberger
          et al. (1982). A cruise master 4.9 feet square/acre (two meters
          square/hectare) amber thin prism will be used for point and plot
          tallies. Plot radius will be 32.8 feet (10 meters) from the sampling
          point. Borderline trees will be counted as one half.

          Shrub species: All shrub species [woody vegetation less than 21 feet
          (6.4 meters) tall] present on a 13.2 foot (4 meter) square plot ori-
          ented on the southeast corner of the sampling point will be recorded.
          Shrub species cover will be presented as both absolute and relative
          frequency.

          Herbaceous species: All herbaceous species present on two,3.3 foot
          (one meter) square plots oriented in the northeast and southwest
          corners of the shrub plot will be recorded. Herb plots will be sur-
          veyed during the spring and again one or more times during the summer.
          Herbaceous species cover will be presented as both absolute and rela-
          tive frequency.



                                           4





                Information from the plant survey as well as a Geological Survey
         -7.51  topographic map, Calvert County soils maps (Matthews 1971), a
       @_-O'Fish and Wildlife Service National Wetlands Inventory map, and high
          altitude black-and-white leaf-on and leaf-off aerial photography will
          be used to delineate major plant community boundaries.


          Permanent Plots

                A permanent plot will be jointly established at each sampling
          point by the Project Consultant and Field Ecologist during the course
          of the plant survey. Each of the 30 plots will be permanently marked
          with either metal tags nailed to trees or six foot metal-stakes driven
          into the ground and referenced to the Maryland State Plane Grid.



          SCHEDULE


          Work Products                            Prolected Completion

          Base map, aerial photography,                   June 1, 1990
          soils map, and wetlands map.

          slope map, drainage map with                    July 1, 1990
          100 year floodplain, and
          plant communities map.

          Descriptions of floristics                      September 30, 1990
          and physiognomy, permanent
          plot set.up, and final report.



          BUDGET


                             Project      Photo         Field         Calvert
            Task           Consultant    Sci., Inc.    Ecologist      County

          Coordination        $1,000

          Mapping             $6,000     $6,000

          Floristics &        $3,750                      $3,750
          Physiognomy

          Permanent              500                      $ 500
          Plots


          Equipment,                                                   $2,500
          aerial photos,
          misc. expenses







                                              5












         LITERATURE CITED


         Board of County Commissioners, Calvert County, Maryland. 1984.
         Flag Ponds'Natural Area Master Plan.  Department of Planning and
         Zoning. Prince Frederick, Maryland. 23pp.

         Hill, James M. 1987. Description of Critical Area Natural Heritage
         Area 12: Flag Ponds, Calvert County, Maryland. Maryland Department of
         Natural Resources, Natural Heritage Program. Annapolis. 10 pp. + 18
         sheets.

         Matthews, E. D. 1971. Soil Survey, Calvert County, Maryland.
         U.S. Department of Agriculture, Soil Conservation Service. 36pp.
         + 36 sheets.





















































                                         6










    I  - .










                                        APPENDIX A


                   Plant Species Composition for the Permanent Plots
                   Flag Ponds Natural Area, Calvert County, Maryland





















                                                                  I








                 Flag Ponds Natural Area, Calvert County, Maryland.
                   Plants located on permanent plot   A/G-2, 1990.


          Herbaceous species

          Hibiscus moscheutos
          Lemna sp.
          Lemna trisulca
          Phragmites australis

          Woody species

          Acer rubrum








                Flag Ponds Natural Area, Calvert County, Maryland.
                  Plants located on permanent plot    A/G-4, 1990.


         Herbaceous species

         Hibiscus moscheutos
         Lemna sp.
         Lemna trisulca
         Typha angustifolia

         Woody species

         Cephalanthus occidentalis









                 Flag Ponds Natural Area, Calvert County, Maryland.
                   Plants located on permanent plot   A/H-3, 1990.


          Herbaceous species

          Hibiscus moschuetos
          Lemna trisulca
          Typha angustifolia

          woody species

          no ne present








                Flag Ponds Natural Area, Calvert County, Maryland.
                  Plants located on permanent plot    A/H-4, 1990.


         Herbaceous species

         Hibiscus moscheutos
         Lemna sp.
         Lemna trisulca

         Woody species

         Acer rubrum
         Fraxinus pennsylvanica
         Liquidambar styraciflua








                 Flag Ponds Natural Area, Calvert County, Maryland.
                   Plants located on permanent plot   A/I-S, 1990.


          Herbaceous species

          Lemna trisulca

          Woody species

          Acer rubrum
          Cornus stolonifera
          Fraxinus pennsylvanica
          Liquidambar styraciflua









                 Flag Ponds Nature Park, Calvert County, Maryland.
                   Plants located on permanent plot   A/I-6, 1990.


          Herbaceous species

          none present

          Woody species

          Acer rubrum
          Fraxinus pennsylvanica
          Liquidambar styraciflua
          u1mus americana







                 Flag Ponds Nature Park, Calvert County, Maryland.
                   Plants located on permanent plot   A/I-7, 1990.


          herbaceous species

          none present


          woody species

          Acer rubrum
          Fraxinus pennsylvanica
          Ilex verticillata
          Liquidambar styraciflua
          Platanus occidentalis
          Ulmus americana








                 Flag Ponds.Natural Area, Calvert County, Maryland.
                   Plants located on permanent plot   A/J-5, 1990.



          Herbaceous species

          Phragmites australis

          woody species

          none present








                 Flag Ponds Natural Area, Calvert County, Maryland.
                   Plants located on permanent plot   A/J-7, 1990.


          Herbaceous species

          Eupatorium sp.
          Hibiscus moscheutos
          Lemna trisulca
          Typha angustifolia
          Typha latifolia

          woody species

          Acer rubrum
          Cephafanthus occidentalis
          Fraxinus pennsylvanica
          Liquidambar styraciflua
          Nyssa sylvatica*
          Salix nigra
          Viburnum prunifolium









                 Flag Ponds Natural Area,, Calvert County,, Maryland-
                   Plants located on permanent plot   A/J-8, 1990.


          Herbaceous species

          Lemna trisulca

          Woody species

          Acer rubrum
          Campsis radicans
          Fraxinus penns'ylvanica
          Liquidambar styraciflua
          Nyssa sylvatica
          Rhus radicans
          Smilax rotundifolia









                 Flag Ponds Natural Area, Calvert County, Maryland.
                   Plants located on permanent plot   A/K-6, 1990.


          Herbaceous species

          Allium sp.
          Galium sp.
          Menispermum canadense

          Woody species

          Campsis radicans
          Cornus florida
          Fraxinus pennsylvanica
          Liquidambar styraciflua
          Myrica cerifera
          Nyssa sylvatica
          Parthenocissus quinquifolia
          Pinus taeda
          Rhus radicans









                 Flag Ponds Natural Area, Calvert County, Maryland.
                   Plants located on permanent plot   A/K-7, 1990.


          Herbaceous species

          Lemna minor

          woody species

          Fraxinus pennsylvanica









                 Flag Ponds Natural Area, Calvert County, Maryland.
                   Plants located on permanent plot  A/K-8, 1990.


          Herbaceous species

          Carex sp.
          Galium sp.

          Woody species

          Asimina triloba
          Fagus grandifolia
          Liquidambar styraciflua
          myrica cerifera
          Nyssa sylvatica
          Pinus rigida
          Pinus taeda
          Platanus occidentalis
          Quercus marilandica
          Rhus copallina
          Ulmus americana
          Vitis Sp.







                 Flag Ponds Natural Area, Calvert County, Maryland.
                   Plants located on permanent plot   A/K-9, 1990.


          Herbaceous species

          Mitchella repens
          Viola sp.

          woody species

          Diospyros virginiana
          Euonymus americanus
          Fagus grandifolia
          Fraxinus pennsylvanica
          Juniperus virginiana
          Lindera benzoin
          Liquidambar styraciflua
          Myrica cerifera
          Nyssa sylvatica
          Pinus rigida
          Pinus taeda
          Quercus falcata








                 Flag Ponds Natural Area, Calvert County, Maryland.
                   Plants located on permanent plot    A/L-9, 1990.


          Herbaceous species

          none present

          Woody species

          none present









                 Flag Ponds Natural Area, Calvert County, Maryland.
                   Plants located on permanent plot   B/B-S, 1990.


          Herbaceous species

          Aster sp.
          Ceratophyllum demersum
          Equisetum sp.
          Galium sp.
          Impatiens capensis
          Podophyllum peltatum
          Polygonum persicaria
          Ranunculus sp.
          Saururus cernuus
          Symplocarpus foetidus
          Tovara virginiana
          Viola sp.

          Woody species

          Acer rubrum
          Asimina triloba
          carpinus caroliniana
          Cornus florida
          Fraxinus pennsylvanica
          Ilex opaca
          Lindera benzoin
          Liquidambar styraciflua
          Liriodendron tulipifera
          Prunus virginiana
          Ulmus americana








                 Flag Ponds Natural Area, Calvert County, Maryland.
                   Plants located on permanent plot   B/C-5, 1990.


          Herbaceous species

          Arisaema atrorubens
          Arisaema triphyllum
          Aster sp.
          Desmodium nudiforum
          Fragaria virginiana
          Galearis sppctabilis
          Galium circaezans
          Podophyllum peltatum
          Ranunculus arbortivus
          Viola sp.

          Woody species

          Acer rubrum
          Asimina triloba
          Carpinus caroliniana
          Carya glabra
          Fagus grandifolia
          Ilex opaca
          Lindera benzoin
          Liquidambar styraciflua
          Liriodendron tulipifera
          Nyssa sylvatica
          Quercus prinus
          Viburnum acerifolium








                Flag Ponds Natural Area, Calvert County, Maryland.
                   Plants located on permanent plot   B/C-6, 1990.


          Herbaceous species

          Arisaema sp.
          Aster sp.
          Caltha palustris
          Cryptotaenia canadensis
          Impatiens capensis
          Ranunculus sp.
          Ranunculus arbortivus
          Ranunculus septentrionalis
          Saururus cernuus
          Symplocarpus foetides
          Tovara virginiana
          Viola sp.

          woody species

          Acer rubrum
          Asimina triloba
          Carpinus caroliniana
          Fagus grandifolia
          Fraxinus pennsylvanica
          Lindera benzoin
          Liquidambar styraciflua
          Nyssa sylvatica
          Rhus radicans
          Smilax rotundifolia









                 Flag Ponds Natural Area, Calvert County, Maryland.
                   Plants located on permanent plot   B/E-5, 1990.


          Herbaceous species

          Mitchella repens

          woody species

          Acer rubrum
          Amelanchior sp.
          carpinus caroliniana
          Cornus florida
          Fagus grandifolia
          Ilex opaca
          Liquidambar styraciflua
          Liriodendron tulipifera
          Nyssa sylvatica
          Pinus virginiana
          Prunus virginiana
          Quercus falcata
          Viburnum acerifolium








                 Flag Ponds Natural Area, Calvert County, Maryland.
                   Plants located on permanent plot   B/E-6, 1990.


          Herbaceous species

          Alium sp.
          Arisaema sp.
          Aster sp.
          Desmodium nudiforum
          Podophyllum peltatum
          Polystichum acrostichoides
          viola conspera

          woody species

          Acer rubrum
          Asimina triloba
          Carpinus caroliniana
          Cornus florida
          Fagus grandifolia
          Ilex opaca
          Liquidambar styraciflua
          Liriodendron tulipifera
          Prunus virginiana
          Quercus rubra
          Viburnum acerifolium








                 Flag Ponds Natural Area, Calvert County, Maryland.
                   Plants located on permanent plot   B/F-3, 1990.


          Herbaceous species

          Arisaema sp.
          Aster sp.
          Dentaria diphylla
          Galium sp.
          Podophyllum peltatum
          Polystichum. acrostichoides
          Ranunculus arbortivus
          viola rotundifolia

          woody species

          Asimina triloba
          carpinus caroliniana
          Cornus florida
          Fagus grandifolia
          Fraxinus pennsylvanica
          Liquidambar styraciflua
          Liriodendron tulipifera
          Prunus virginiana
          Quercus rubra









               Flag Ponds Natural Area, Calvert County, Maryland.
                   Plants located on permanent plot   B/F-4, 1990.


          Herbaceous species

          Arisaema sp.
          Aster sp.
          Athyrium platynueron
          Dentaria diphylla
          Galium sp.
          Mitchella repens
          Oxalis sp.

          Woody species

          Acer rubrum
          Asimina triloba
          Carpinus caroliniana
          Carya glabra
          Cornus florida
          Fagus grandifolia'
          Liquidambar styraciflua
          Liriodendron tulipifera
          Prunus virginiana
          Quercus falcata
          Quercus rubra
          Viburnum acerifolium








                 Flag Ponds Natural Area, Calvert County, Maryland.
                   Plants located on permanent plot   B/F-51 1990.


          Herbaceous species

          Mitchella repens

          Woody species

          Acer rubrum
          Asimina triloba
          Carya glabra
          Cornus florida
          Fagus grandifolia
          Ilex opaca
          Liquidambar styraciflua
          Liriodendron tulipifera
          Pinus virginiana
          Prunus virginiana
          Quercus alba
          Quercus falcata
          Quercus prinus
          Quercus rubra
          Sassafrass albidum
          Smilax rotundifolia








                 Flag Ponds Natural Area, Calvert County, Maryland.
                   Plants located on permanent plot,# B/H-7, 1990.


          Herbaceous species

          Carex sp.
          Galium circaezans
          Polystichum acrostichoides

          woody species

          Acer rubrum
          Asimina triloba
          Carpinus caroliniana
          Carya glabra
          Cornus florida
          Fagus grandifolia
          Ilex opaca
          Kalmia latifolia
          Liquidambar styraciflua
          Liriodendron tulipifera
          Pinus taeda
          Prunus virginiana
          Quercus alba
          Quercus prinus
          Sassafrass albidum
          Viburnum prunifolium








                 Flag Ponds Natural Area, Calvert County, Maryland.
                   Plants located on permanent plot   B/H-8, 1990.


          Herbaceous species

          Viola sp.

          Woody species

          Acer rubrum
          Amelanchior sp.
          Carya glabra
          Cornus florida
          Ilex opaca
          Liquidambar styraciflua
          Liriodendron tulipifera
          Parthenocissus quinquifolia
          Prunus virginiana
          Quercus falcata
          Rhus radicans
          Sassafrass albidum
          Smilax rotundifolia
          Viburnum acerifolium








                 Flag Ponds Natural Area, Calvert County, Maryland.
                   Plants located on permanent plot   B/H-9, 1990.


          Herbaceous species

          Lycopodium obscurum
          Ranunculus sp.

          woody species

          Acer rubrum
          Carpinus caroliniana
          Carya sp.
          Cornus florida
          Euonymus americanus
          Ilex opaca
          Liquidambar styraciflua
          Liriodendron tulipifera
          Ostrya virginiana
          Pinus taeda
          Pinus virginiana
          Prunus virginiana
          Quercus sp.
          Robinia pseudo-acacia
          Sassafrass albidum
          Smilax rotundifolia
          Vaccin'ium corumbosum








                 Flag Ponds Natural Area, Calvert County, Maryland.
                   Plants located on permanent plot   B/H-10, 1990.


          Herbaceous species

          Caltha palustris
          Eupatorium sp.

          Woody species

          Acer rubrum
          Asimina triloba
          Cornus florida
          Diospyros virginiana
          Ilex opaca
          Liquidambar styraciflua
          Liriodendron tulipifera
          Pinus taeda
          Pinus virginiana
          Prunus virginiana
          Smilax rotundifolia









                 Flag Ponds Natural Area, Calvert County, Maryland.
                   Plants located on permanent plot   B/1-8, 1990.


          Herbaceous species

          Arisaema sp.
          Dentaria diphylla
          Galium sp.
          Galium circaezans
          Podophyllum peltatum

          Woody species

          Asimina triloba
          Cornus florida
          Ilex opaca
          Lindera benzoin
          Liquidambar styraciflua
          Liriodendron tulipifera
          Parthenodissus quinquifolia
          Pinus taeda
          Prunus virginiana
          Smilax rotundifolia








                 Flag Ponds Natural Area, Calvert County, Maryland.
                   Plants located on permanent plot   B/I-10, 1990.


          Herbaceous species

          AlUum sp.
          Aster sp.
          Fragaria virginiana
          Galium circaezans
          Viola sp.
          Viola conspera

          Woody species

          Carpinus caroliniana
          Cornus florida
          Ilex opaca
          Lindera benzoin
          Liquidambar styraciflua
          Liriodendron tulipifera
          Prunus virginiana









                 Flag Ponds Natural Area, Calvert County, Xaryland.
                   Plants located on permanent plot   B/J-10, 1990.


          Herbaceous species

          Aster sp.
          Aster sagittifolius
          Mitchella repens
          Polystichum acrostichoides
          Viola sp.
          Viola conspera

          woody species

          Acer rubrum
          carpinus caroliniana
          Carya glabra
          Cornus florida
          Ilex opaca
          Liquidambar styraciflua
          Liriodendron tulipifera
          Prunus virginiana
          Quercus rubra








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