085-SCRU-0001
» Citation URL: http://vegbank.org/cite/urn:lsid:cvs.bio.unc.edu:observation:15430-{37CFD961-A0FB-43E1-8922-4555CFDCB7E6} » Citing info
Plot ID Fields:
Author Plot Code	085-SCRU-0001
Author Observation Code	085-SCRU-0001
Location Fields:	MAP: Google | Yahoo | TopoZone | MapQuest
Location Accuracy	25 m
Confidentiality Status	100 km radius (nearest degree)
Latitude	39 º
Longitude	-77 º
State or Province	Virginia
Named Places	county: Fairfax county: Fairfax region|state|province: Virginia
Layout Fields:
DSG Polygon	16 x 25 m
Area	400 m²
Permanence	not permanent
Environment Fields:
Elevation	50 m
Slope Aspect	75 º
Slope Gradient	24 º
Topographic Position	middle slope
Landform	ravine
Hydrologic Regime	terrestrial (upland)
Soil Moisture Regime	mesic
Soil Drainage	well drained
Methods Fields:
Observation Start Date	29-Apr-2003
Observation End Date	29-Apr-2003
Project	Virginia Heritage
Cover Method	Carolina Vegetation Survey
Stratum Method	No Strata
Stem Size Limit	2.5 cm
Method Narrative	Releve Virginia Division of Natural Heritage, see http://www.dcr.virginia.gov/natural_heritage/documents/nh_plotform_instructions.pdf
Overall Taxon Cover Values are Automatically Calculated?	no
Stem Observation Area	400 m²
Plot Quality Fields:
Plot Validation Level	(2) classification plot: sufficient for inclusion in a classification revision
Overall Plot Vegetation Fields:
Tree Height	35 m
Shrub Height	5 m
Field Height	8 m
Tree Cover	80 %
Shrub Cover	75 %
Field Cover	85 %
Nonvascular Cover	8 %
Misc Fields:
Observation Narrative	This plot captures a lush mesophytic hardwood forest on the lower slope of a steep, narrow ravine that cuts through the bluffs along the Potomac River. Large colonies of Trillium sessile, Caulophyllum thalictroides, Claytonia virginica, and other nutrient-demanding spring ephemerals thrive in the calcium-rich colluvial soils under mixed tree layers of Liriodendron tulipifera, Fraxinus americana, Acer saccharum, Tilia americana, and Fagus grandifolia. A hiking trail traverses the bottom of the ravine and serves as a vector for the spread of exotic weeds such as Veronica hederifolia.

Taxa occurring on this plot-observation
Change plant label: --Choose a value-- Author's plant name Original Interpretation, full Scientific Name Original Interpretation, Scientific Name without authors Original Interpretation, USDA Code Original Interpretation, Common Name Current Interpretation, full Scientific Name Current Interpretation, Scientific Name without authors Current Interpretation, USDA Code Current Interpretation, Common Name
Change Strata Shown: --choose one-- show strata (no strata on this plot) show overall cover show strata + overall
ord Author Plant Name Original Interpretation, full Scientific Name Original Interpretation, Scientific Name without authors Original Interpretation, Common Name Original Interpretation, USDA Code Current Interpretation, full Scientific Name Current Interpretation, Scientific Name without authors Current Interpretation, Common Name Current Interpretation, USDA Code Stratum Cover Original Cover Code Basal Area Biomass Inference Area Stems: Stem Diameters (graphically): 1 Lindera benzoin Lindera benzoin **   Lindera benzoin **   Lindera benzoin **   Lindera benzoin **   Lindera benzoin **   Lindera benzoin **   Lindera benzoin **   Lindera benzoin **   -all-   37.5 % 7       DBH DBH err Ht. Ht. Err # 3.75 cm ± 1.25 cm     4 stem(s) 2 Acer saccharum Acer saccharum **   Acer saccharum **   Acer saccharum **   Acer saccharum **   Acer saccharum **   Acer saccharum **   Acer saccharum **   Acer saccharum **   -all-   37.5 % 7       DBH DBH err Ht. Ht. Err # 3.75 cm ± 1.25 cm     5 stem(s) 7.5 cm ± 2.5 cm     1 stem(s) 22.5 cm ± 2.5 cm     1 stem(s) 3 Asimina triloba Asimina triloba **   Asimina triloba **   Asimina triloba **   Asimina triloba **   Asimina triloba **   Asimina triloba **   Asimina triloba **   Asimina triloba **   -all-   37.5 % 7       DBH DBH err Ht. Ht. Err # 3.75 cm ± 1.25 cm     2 stem(s) 4 Claytonia virginica Claytonia virginica **   Claytonia virginica **   Claytonia virginica **   Claytonia virginica **   Claytonia virginica **   Claytonia virginica **   Claytonia virginica **   Claytonia virginica **   -all-   37.5 % 7       -none- 5 Liriodendron tulipifera Liriodendron tulipifera **   Liriodendron tulipifera **   Liriodendron tulipifera **   Liriodendron tulipifera **   Liriodendron tulipifera **   Liriodendron tulipifera **   Liriodendron tulipifera **   Liriodendron tulipifera **   -all-   37.5 % 7       DBH DBH err Ht. Ht. Err # 63.5 cm ± 0.5 cm     1 stem(s) 71.5 cm ± 0.5 cm     1 stem(s) 6 Tilia americana var. americana Tilia americana var. americana **   Tilia americana var. americana **   Tilia americana var. americana **   Tilia americana var. americana **   Tilia americana var. americana **   Tilia americana var. americana **   Tilia americana var. americana **   Tilia americana var. americana **   -all-   17.5 % 6       DBH DBH err Ht. Ht. Err # 3.75 cm ± 1.25 cm     2 stem(s) 7.5 cm ± 2.5 cm     3 stem(s) 12.5 cm ± 2.5 cm     1 stem(s) 22.5 cm ± 2.5 cm     1 stem(s) 7 Caulophyllum thalictroides Caulophyllum thalictroides **   Caulophyllum thalictroides **   Caulophyllum thalictroides **   Caulophyllum thalictroides **   Caulophyllum thalictroides **   Caulophyllum thalictroides **   Caulophyllum thalictroides **   Caulophyllum thalictroides **   -all-   17.5 % 6       -none- 8 Acer negundo var. negundo Acer negundo var. negundo **   Acer negundo var. negundo **   Acer negundo var. negundo **   Acer negundo var. negundo **   Acer negundo var. negundo **   Acer negundo var. negundo **   Acer negundo var. negundo **   Acer negundo var. negundo **   -all-   17.5 % 6       DBH DBH err Ht. Ht. Err # 12.5 cm ± 2.5 cm     2 stem(s) 17.5 cm ± 2.5 cm     1 stem(s) 9 Fraxinus americana Fraxinus americana **   Fraxinus americana **   Fraxinus americana **   Fraxinus americana **   Fraxinus americana **   Fraxinus americana **   Fraxinus americana **   Fraxinus americana **   -all-   17.5 % 6       DBH DBH err Ht. Ht. Err # 37.5 cm ± 2.5 cm     1 stem(s) 43.5 cm ± 0.5 cm     1 stem(s) 10 Trillium sessile Trillium sessile **   Trillium sessile **   Trillium sessile **   Trillium sessile **   Trillium sessile **   Trillium sessile **   Trillium sessile **   Trillium sessile **   -all-   17.5 % 6       -none- 11 Fagus grandifolia Fagus grandifolia **   Fagus grandifolia **   Fagus grandifolia **   Fagus grandifolia **   Fagus grandifolia **   Fagus grandifolia **   Fagus grandifolia **   Fagus grandifolia **   -all-   7.5 % 5       DBH DBH err Ht. Ht. Err # 3.75 cm ± 1.25 cm     3 stem(s) 7.5 cm ± 2.5 cm     1 stem(s) 12 Eurybia divaricata Eurybia divaricata **   Eurybia divaricata **   Eurybia divaricata **   Eurybia divaricata **   Eurybia divaricata **   Eurybia divaricata **   Eurybia divaricata **   Eurybia divaricata **   -all-   7.5 % 5       -none- 13 Ulmus rubra Ulmus rubra **   Ulmus rubra **   Ulmus rubra **   Ulmus rubra **   Ulmus rubra **   Ulmus rubra **   Ulmus rubra **   Ulmus rubra **   -all-   3.5 % 4       DBH DBH err Ht. Ht. Err # 3.75 cm ± 1.25 cm     1 stem(s) 7.5 cm ± 2.5 cm     1 stem(s) 14 Ostrya virginiana Ostrya virginiana **   Ostrya virginiana **   Ostrya virginiana **   Ostrya virginiana **   Ostrya virginiana **   Ostrya virginiana **   Ostrya virginiana **   Ostrya virginiana **   -all-   3.5 % 4       DBH DBH err Ht. Ht. Err # 17.5 cm ± 2.5 cm     1 stem(s) 15 Viola pubescens Viola pubescens **   Viola pubescens **   Viola pubescens **   Viola pubescens **   Viola pubescens **   Viola pubescens **   Viola pubescens **   Viola pubescens **   -all-   3.5 % 4       -none- 16 Veronica hederifolia Veronica hederifolia **   Veronica hederifolia **   Veronica hederifolia **   Veronica hederifolia **   Veronica hederifolia **   Veronica hederifolia **   Veronica hederifolia **   Veronica hederifolia **   -all-   3.5 % 4       -none- 17 Cardamine concatenata Cardamine concatenata **   Cardamine concatenata **   Cardamine concatenata **   Cardamine concatenata **   Cardamine concatenata **   Cardamine concatenata **   Cardamine concatenata **   Cardamine concatenata **   -all-   3.5 % 4       -none- 18 Polystichum acrostichoides Polystichum acrostichoides **   Polystichum acrostichoides **   Polystichum acrostichoides **   Polystichum acrostichoides **   Polystichum acrostichoides **   Polystichum acrostichoides **   Polystichum acrostichoides **   Polystichum acrostichoides **   -all-   3.5 % 4       -none- 19 Osmorhiza longistylis Osmorhiza longistylis **   Osmorhiza longistylis **   Osmorhiza longistylis **   Osmorhiza longistylis **   Osmorhiza longistylis **   Osmorhiza longistylis **   Osmorhiza longistylis **   Osmorhiza longistylis **   -all-   3.5 % 4       -none- 20 Potentilla indica Potentilla indica **   Potentilla indica **   Potentilla indica **   Potentilla indica **   Potentilla indica **   Potentilla indica **   Potentilla indica **   Potentilla indica **   -all-   1.5 % 3       -none- 21 Stellaria pubera Stellaria pubera **   Stellaria pubera **   Stellaria pubera **   Stellaria pubera **   Stellaria pubera **   Stellaria pubera **   Stellaria pubera **   Stellaria pubera **   -all-   1.5 % 3       -none- 22 Asarum canadense Asarum canadense **   Asarum canadense **   Asarum canadense **   Asarum canadense **   Asarum canadense **   Asarum canadense **   Asarum canadense **   Asarum canadense **   -all-   1.5 % 3       -none- 23 Dicentra canadensis Dicentra canadensis **   Dicentra canadensis **   Dicentra canadensis **   Dicentra canadensis **   Dicentra canadensis **   Dicentra canadensis **   Dicentra canadensis **   Dicentra canadensis **   -all-   1.5 % 3       -none- 24 Arisaema triphyllum Arisaema triphyllum **   Arisaema triphyllum **   Arisaema triphyllum **   Arisaema triphyllum **   Arisaema triphyllum **   Arisaema triphyllum **   Arisaema triphyllum **   Arisaema triphyllum **   -all-   1.5 % 3       -none- 25 Maianthemum racemosum ssp. racemosum Maianthemum racemosum ssp. racemosum **   Maianthemum racemosum ssp. racemosum **   Maianthemum racemosum ssp. racemosum **   Maianthemum racemosum ssp. racemosum **   Maianthemum racemosum ssp. racemosum **   Maianthemum racemosum ssp. racemosum **   Maianthemum racemosum ssp. racemosum **   Maianthemum racemosum ssp. racemosum **   -all-   1.5 % 3       -none- 26 Circaea canadensis ssp. canadensis Circaea canadensis ssp. canadensis **   Circaea canadensis ssp. canadensis **   Circaea canadensis ssp. canadensis **   Circaea canadensis ssp. canadensis **   Circaea canadensis ssp. canadensis **   Circaea canadensis ssp. canadensis **   Circaea canadensis ssp. canadensis **   Circaea canadensis ssp. canadensis **   -all-   1.5 % 3       -none- 27 Sanicula odorata Sanicula odorata **   Sanicula odorata **   Sanicula odorata **   Sanicula odorata **   Sanicula odorata **   Sanicula odorata **   Sanicula odorata **   Sanicula odorata **   -all-   1.5 % 3       -none- 28 Sanguinaria canadensis Sanguinaria canadensis **   Sanguinaria canadensis **   Sanguinaria canadensis **   Sanguinaria canadensis **   Sanguinaria canadensis **   Sanguinaria canadensis **   Sanguinaria canadensis **   Sanguinaria canadensis **   -all-   1.5 % 3       -none- 29 Carya cordiformis Carya cordiformis **   Carya cordiformis **   Carya cordiformis **   Carya cordiformis **   Carya cordiformis **   Carya cordiformis **   Carya cordiformis **   Carya cordiformis **   -all-   1.5 % 3       DBH DBH err Ht. Ht. Err # 3.75 cm ± 1.25 cm     1 stem(s) 7.5 cm ± 2.5 cm     1 stem(s) 30 Dicentra cucullaria Dicentra cucullaria **   Dicentra cucullaria **   Dicentra cucullaria **   Dicentra cucullaria **   Dicentra cucullaria **   Dicentra cucullaria **   Dicentra cucullaria **   Dicentra cucullaria **   -all-   1.5 % 3       -none- 31 Hydrophyllum canadense Hydrophyllum canadense **   Hydrophyllum canadense **   Hydrophyllum canadense **   Hydrophyllum canadense **   Hydrophyllum canadense **   Hydrophyllum canadense **   Hydrophyllum canadense **   Hydrophyllum canadense **   -all-   1.5 % 3       -none- 32 Solidago flexicaulis Solidago flexicaulis **   Solidago flexicaulis **   Solidago flexicaulis **   Solidago flexicaulis **   Solidago flexicaulis **   Solidago flexicaulis **   Solidago flexicaulis **   Solidago flexicaulis **   -all-   0.505 % 2       -none- 33 Allium tricoccum Allium tricoccum **   Allium tricoccum **   Allium tricoccum **   Allium tricoccum **   Allium tricoccum **   Allium tricoccum **   Allium tricoccum **   Allium tricoccum **   -all-   0.505 % 2       -none- 34 Medeola virginiana Medeola virginiana **   Medeola virginiana **   Medeola virginiana **   Medeola virginiana **   Medeola virginiana **   Medeola virginiana **   Medeola virginiana **   Medeola virginiana **   -all-   0.505 % 2       -none- 35 Festuca subverticillata Festuca subverticillata **   Festuca subverticillata **   Festuca subverticillata **   Festuca subverticillata **   Festuca subverticillata **   Festuca subverticillata **   Festuca subverticillata **   Festuca subverticillata **   -all-   0.505 % 2       -none- 36 Galium aparine Galium aparine **   Galium aparine **   Galium aparine **   Galium aparine **   Galium aparine **   Galium aparine **   Galium aparine **   Galium aparine **   -all-   0.505 % 2       -none- 37 Adiantum pedatum Adiantum pedatum **   Adiantum pedatum **   Adiantum pedatum **   Adiantum pedatum **   Adiantum pedatum **   Adiantum pedatum **   Adiantum pedatum **   Adiantum pedatum **   -all-   0.505 % 2       -none- 38 Cornus alternifolia Cornus alternifolia **   Cornus alternifolia **   Cornus alternifolia **   Cornus alternifolia **   Cornus alternifolia **   Cornus alternifolia **   Cornus alternifolia **   Cornus alternifolia **   -all-   0.505 % 2       -none- 39 Alliaria petiolata Alliaria petiolata **   Alliaria petiolata **   Alliaria petiolata **   Alliaria petiolata **   Alliaria petiolata **   Alliaria petiolata **   Alliaria petiolata **   Alliaria petiolata **   -all-   0.505 % 2       -none- 40 Hydrangea arborescens Hydrangea arborescens **   Hydrangea arborescens **   Hydrangea arborescens **   Hydrangea arborescens **   Hydrangea arborescens **   Hydrangea arborescens **   Hydrangea arborescens **   Hydrangea arborescens **   -all-   0.505 % 2       -none- 41 Botrypus virginianus Botrypus virginianus **   Botrypus virginianus **   Botrypus virginianus **   Botrypus virginianus **   Botrypus virginianus **   Botrypus virginianus **   Botrypus virginianus **   Botrypus virginianus **   -all-   0.505 % 2       -none- 42 Podophyllum peltatum Podophyllum peltatum **   Podophyllum peltatum **   Podophyllum peltatum **   Podophyllum peltatum **   Podophyllum peltatum **   Podophyllum peltatum **   Podophyllum peltatum **   Podophyllum peltatum **   -all-   0.505 % 2       -none- 43 Cryptotaenia canadensis Cryptotaenia canadensis **   Cryptotaenia canadensis **   Cryptotaenia canadensis **   Cryptotaenia canadensis **   Cryptotaenia canadensis **   Cryptotaenia canadensis **   Cryptotaenia canadensis **   Cryptotaenia canadensis **   -all-   0.505 % 2       -none- 44 Thalictrum dioicum Thalictrum dioicum **   Thalictrum dioicum **   Thalictrum dioicum **   Thalictrum dioicum **   Thalictrum dioicum **   Thalictrum dioicum **   Thalictrum dioicum **   Thalictrum dioicum **   -all-   0.505 % 2       -none- 45 Dryopteris marginalis Dryopteris marginalis **   Dryopteris marginalis **   Dryopteris marginalis **   Dryopteris marginalis **   Dryopteris marginalis **   Dryopteris marginalis **   Dryopteris marginalis **   Dryopteris marginalis **   -all-   0.505 % 2       -none- 46 Ranunculus abortivus Ranunculus abortivus **   Ranunculus abortivus **   Ranunculus abortivus **   Ranunculus abortivus **   Ranunculus abortivus **   Ranunculus abortivus **   Ranunculus abortivus **   Ranunculus abortivus **   -all-   0.505 % 2       -none- 47 Viola sororia Viola sororia **   Viola sororia **   Viola sororia **   Viola sororia **   Viola sororia **   Viola sororia **   Viola sororia **   Viola sororia **   -all-   0.505 % 2       -none- 48 Actaea racemosa Actaea racemosa **   Actaea racemosa **   Actaea racemosa **   Actaea racemosa **   Actaea racemosa **   Actaea racemosa **   Actaea racemosa **   Actaea racemosa **   -all-   0.505 % 2       -none- 49 Collinsonia canadensis Collinsonia canadensis **   Collinsonia canadensis **   Collinsonia canadensis **   Collinsonia canadensis **   Collinsonia canadensis **   Collinsonia canadensis **   Collinsonia canadensis **   Collinsonia canadensis **   -all-   0.05 % 1       -none- 50 Galearis spectabilis Galearis spectabilis **   Galearis spectabilis **   Galearis spectabilis **   Galearis spectabilis **   Galearis spectabilis **   Galearis spectabilis **   Galearis spectabilis **   Galearis spectabilis **   -all-   0.05 % 1       -none-
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Stratum Definitions:
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