085-BULL-0037P
» Citation URL: http://vegbank.org/cite/urn:lsid:cvs.bio.unc.edu:observation:12842-{6AA37174-B69D-4DE7-8A58-3EC872685941} » Citing info
Plot ID Fields:
Author Plot Code	085-BULL-0037P
Author Observation Code	085-BULL-0037P
Location Fields:	MAP: Google | Yahoo | TopoZone | MapQuest
Location Accuracy	10 m
Confidentiality Status	100 km radius (nearest degree)
Latitude	39 º
Longitude	-78 º
State or Province	Virginia
Named Places	county: Fauquier region|state|province: Virginia
Layout Fields:
DSG Polygon	20 x 20 m
Area	400 m²
Permanence	not permanent
Environment Fields:
Elevation	273 m
Slope Aspect	336 º
Slope Gradient	30 º
Topographic Position	middle slope
Landform	boulderfield/talus/debris slide
Hydrologic Regime	terrestrial (upland)
Soil Moisture Regime	somewhat xeric
Soil Drainage	well drained
Methods Fields:
Observation Start Date	19-Jul-2001
Observation End Date	19-Jul-2001
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	34 m
Shrub Height	6 m
Field Height	5 m
Tree Cover	80 %
Shrub Cover	20 %
Field Cover	35 %
Nonvascular Cover	70 %
Misc Fields:
Observation Narrative	Plot location: massive outcrop/ boulderfield at north end of middle ridge of Bull Run Mountain, 0.17 km S of Rt. 629 bridge over Catharpin Creek. Marked with a metal tree tag. See form/report for sketch. Rock types present: massive quartzite outcrops and boulders. Microtopography is irregular, craggy, and bouldery. This plot sample documents a small patch of old-age forest occupying a rugged boulderfield on the slope of Jackson Hollow. Soils are very limited and largely interstitial; the herbaceous flora is dominated by lithophytic ferns, like Polypodium virginianum and Dryopteris marginalis, capable of growing in crevices and organic mats. More demanding forbs, such as Actaea racemosa, Arisaema triphyllum ssp. Triphyllum, and Circaea canadensis ssp. Canadensis, inhabit a few flat boulders and ledges where loamy colluvium has been deposited. Dominant individuals of Quercus montana and Liriodendron tulipifera are truly impressive, with some approaching 1.0 m DBH. Four species that are uncommon or rare in the Bull Run Mountains occur here: Asplenium rhizophyllum (only known extant station), Cornus alternifolia (one of only a very few stations), Juglans cinerea (now much reduced by an introduced fungal pathogen), and Rubus odoratus var. odoratus (only known station).

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 Quercus montana Quercus montana **   Quercus montana **   Quercus montana **   Quercus montana **   Quercus montana **   Quercus montana **   Quercus montana **   Quercus montana **   -all-   62.5 % 8       DBH DBH err Ht. Ht. Err # 7.5 cm ± 2.5 cm     4 stem(s) 17.5 cm ± 2.5 cm     2 stem(s) 37.5 cm ± 2.5 cm     1 stem(s) 49.5 cm ± 0.5 cm     1 stem(s) 49.5 cm ± 0.5 cm     1 stem(s) 67.5 cm ± 0.5 cm     1 stem(s) 67.5 cm ± 0.5 cm     1 stem(s) 2 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 # 68.5 cm ± 0.5 cm     1 stem(s) 90.5 cm ± 0.5 cm     1 stem(s) 3 Polypodium virginianum Polypodium virginianum **   Polypodium virginianum **   Polypodium virginianum **   Polypodium virginianum **   Polypodium virginianum **   Polypodium virginianum **   Polypodium virginianum **   Polypodium virginianum **   -all-   37.5 % 7       -none- 4 Acer rubrum Acer rubrum **   Acer rubrum **   Acer rubrum **   Acer rubrum **   Acer rubrum **   Acer rubrum **   Acer rubrum **   Acer rubrum **   -all-   17.5 % 6       DBH DBH err Ht. Ht. Err # 3.75 cm ± 1.25 cm     4 stem(s) 7.5 cm ± 2.5 cm     4 stem(s) 17.5 cm ± 2.5 cm     3 stem(s) 5 Cornus florida Cornus florida **   Cornus florida **   Cornus florida **   Cornus florida **   Cornus florida **   Cornus florida **   Cornus florida **   Cornus florida **   -all-   7.5 % 5       DBH DBH err Ht. Ht. Err # 3.75 cm ± 1.25 cm     4 stem(s) 6 Juglans cinerea Juglans cinerea **   Juglans cinerea **   Juglans cinerea **   Juglans cinerea **   Juglans cinerea **   Juglans cinerea **   Juglans cinerea **   Juglans cinerea **   -all-   7.5 % 5       DBH DBH err Ht. Ht. Err # 12.5 cm ± 2.5 cm     1 stem(s) 7 Toxicodendron radicans var. radicans Toxicodendron radicans var. radicans **   Toxicodendron radicans var. radicans **   Toxicodendron radicans var. radicans **   Toxicodendron radicans var. radicans **   Toxicodendron radicans var. radicans **   Toxicodendron radicans var. radicans **   Toxicodendron radicans var. radicans **   Toxicodendron radicans var. radicans **   -all-   7.5 % 5       -none- 8 Dryopteris marginalis Dryopteris marginalis **   Dryopteris marginalis **   Dryopteris marginalis **   Dryopteris marginalis **   Dryopteris marginalis **   Dryopteris marginalis **   Dryopteris marginalis **   Dryopteris marginalis **   -all-   3.5 % 4       -none- 9 Parthenocissus quinquefolia Parthenocissus quinquefolia **   Parthenocissus quinquefolia **   Parthenocissus quinquefolia **   Parthenocissus quinquefolia **   Parthenocissus quinquefolia **   Parthenocissus quinquefolia **   Parthenocissus quinquefolia **   Parthenocissus quinquefolia **   -all-   3.5 % 4       -none- 10 Vaccinium pallidum Vaccinium pallidum **   Vaccinium pallidum **   Vaccinium pallidum **   Vaccinium pallidum **   Vaccinium pallidum **   Vaccinium pallidum **   Vaccinium pallidum **   Vaccinium pallidum **   -all-   1.5 % 3       -none- 11 Vitis aestivalis var. bicolor Vitis aestivalis var. bicolor **   Vitis aestivalis var. bicolor **   Vitis aestivalis var. bicolor **   Vitis aestivalis var. bicolor **   Vitis aestivalis var. bicolor **   Vitis aestivalis var. bicolor **   Vitis aestivalis var. bicolor **   Vitis aestivalis var. bicolor **   -all-   1.5 % 3       -none- 12 Carya tomentosa Carya tomentosa **   Carya tomentosa **   Carya tomentosa **   Carya tomentosa **   Carya tomentosa **   Carya tomentosa **   Carya tomentosa **   Carya tomentosa **   -all-   1.5 % 3       -none- 13 Actaea racemosa Actaea racemosa **   Actaea racemosa **   Actaea racemosa **   Actaea racemosa **   Actaea racemosa **   Actaea racemosa **   Actaea racemosa **   Actaea racemosa **   -all-   1.5 % 3       -none- 14 Fraxinus americana Fraxinus americana **   Fraxinus americana **   Fraxinus americana **   Fraxinus americana **   Fraxinus americana **   Fraxinus americana **   Fraxinus americana **   Fraxinus americana **   -all-   1.5 % 3       -none- 15 Rhododendron periclymenoides Rhododendron periclymenoides **   Rhododendron periclymenoides **   Rhododendron periclymenoides **   Rhododendron periclymenoides **   Rhododendron periclymenoides **   Rhododendron periclymenoides **   Rhododendron periclymenoides **   Rhododendron periclymenoides **   -all-   1.5 % 3       DBH DBH err Ht. Ht. Err # 3.75 cm ± 1.25 cm     1 stem(s) 16 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- 17 Rubus odoratus Rubus odoratus **   Rubus odoratus **   Rubus odoratus **   Rubus odoratus **   Rubus odoratus **   Rubus odoratus **   Rubus odoratus **   Rubus odoratus **   -all-   1.5 % 3       -none- 18 Arisaema triphyllum ssp. triphyllum Arisaema triphyllum ssp. triphyllum **   Arisaema triphyllum ssp. triphyllum **   Arisaema triphyllum ssp. triphyllum **   Arisaema triphyllum ssp. triphyllum **   Arisaema triphyllum ssp. triphyllum **   Arisaema triphyllum ssp. triphyllum **   Arisaema triphyllum ssp. triphyllum **   Arisaema triphyllum ssp. triphyllum **   -all-   1.5 % 3       -none- 19 Sassafras albidum Sassafras albidum **   Sassafras albidum **   Sassafras albidum **   Sassafras albidum **   Sassafras albidum **   Sassafras albidum **   Sassafras albidum **   Sassafras albidum **   -all-   1.5 % 3       DBH DBH err Ht. Ht. Err # 3.75 cm ± 1.25 cm     2 stem(s) 20 Rubus phoenicolasius Rubus phoenicolasius **   Rubus phoenicolasius **   Rubus phoenicolasius **   Rubus phoenicolasius **   Rubus phoenicolasius **   Rubus phoenicolasius **   Rubus phoenicolasius **   Rubus phoenicolasius **   -all-   1.5 % 3       -none- 21 Eurybia divaricata Eurybia divaricata **   Eurybia divaricata **   Eurybia divaricata **   Eurybia divaricata **   Eurybia divaricata **   Eurybia divaricata **   Eurybia divaricata **   Eurybia divaricata **   -all-   0.505 % 2       -none- 22 Impatiens capensis Impatiens capensis **   Impatiens capensis **   Impatiens capensis **   Impatiens capensis **   Impatiens capensis **   Impatiens capensis **   Impatiens capensis **   Impatiens capensis **   -all-   0.505 % 2       -none- 23 Carya glabra Carya glabra **   Carya glabra **   Carya glabra **   Carya glabra **   Carya glabra **   Carya glabra **   Carya glabra **   Carya glabra **   -all-   0.505 % 2       -none- 24 Hylodesmum nudiflorum Hylodesmum nudiflorum **   Hylodesmum nudiflorum **   Hylodesmum nudiflorum **   Hylodesmum nudiflorum **   Hylodesmum nudiflorum **   Hylodesmum nudiflorum **   Hylodesmum nudiflorum **   Hylodesmum nudiflorum **   -all-   0.505 % 2       -none- 25 Smilax rotundifolia Smilax rotundifolia **   Smilax rotundifolia **   Smilax rotundifolia **   Smilax rotundifolia **   Smilax rotundifolia **   Smilax rotundifolia **   Smilax rotundifolia **   Smilax rotundifolia **   -all-   0.505 % 2       -none- 26 Aralia nudicaulis Aralia nudicaulis **   Aralia nudicaulis **   Aralia nudicaulis **   Aralia nudicaulis **   Aralia nudicaulis **   Aralia nudicaulis **   Aralia nudicaulis **   Aralia nudicaulis **   -all-   0.505 % 2       -none- 27 Dioscorea quaternata Dioscorea quaternata **   Dioscorea quaternata **   Dioscorea quaternata **   Dioscorea quaternata **   Dioscorea quaternata **   Dioscorea quaternata **   Dioscorea quaternata **   Dioscorea quaternata **   -all-   0.505 % 2       -none- 28 Diospyros virginiana Diospyros virginiana **   Diospyros virginiana **   Diospyros virginiana **   Diospyros virginiana **   Diospyros virginiana **   Diospyros virginiana **   Diospyros virginiana **   Diospyros virginiana **   -all-   0.505 % 2       -none- 29 Asplenium rhizophyllum Asplenium rhizophyllum **   Asplenium rhizophyllum **   Asplenium rhizophyllum **   Asplenium rhizophyllum **   Asplenium rhizophyllum **   Asplenium rhizophyllum **   Asplenium rhizophyllum **   Asplenium rhizophyllum **   -all-   0.505 % 2       -none- 30 Microstegium vimineum Microstegium vimineum **   Microstegium vimineum **   Microstegium vimineum **   Microstegium vimineum **   Microstegium vimineum **   Microstegium vimineum **   Microstegium vimineum **   Microstegium vimineum **   -all-   0.505 % 2       -none- 31 Carex digitalis var. digitalis Carex digitalis var. digitalis **   Carex digitalis var. digitalis **   Carex digitalis var. digitalis **   Carex digitalis var. digitalis **   Carex digitalis var. digitalis **   Carex digitalis var. digitalis **   Carex digitalis var. digitalis **   Carex digitalis var. digitalis **   -all-   0.505 % 2       -none- 32 Cornus alternifolia Cornus alternifolia **   Cornus alternifolia **   Cornus alternifolia **   Cornus alternifolia **   Cornus alternifolia **   Cornus alternifolia **   Cornus alternifolia **   Cornus alternifolia **   -all-   0.505 % 2       -none- 33 Nyssa sylvatica Nyssa sylvatica **   Nyssa sylvatica **   Nyssa sylvatica **   Nyssa sylvatica **   Nyssa sylvatica **   Nyssa sylvatica **   Nyssa sylvatica **   Nyssa sylvatica **   -all-   0.505 % 2       -none- 34 Hydrangea arborescens Hydrangea arborescens **   Hydrangea arborescens **   Hydrangea arborescens **   Hydrangea arborescens **   Hydrangea arborescens **   Hydrangea arborescens **   Hydrangea arborescens **   Hydrangea arborescens **   -all-   0.505 % 2       -none- 35 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-   0.505 % 2       -none- 36 Medeola virginiana Medeola virginiana **   Medeola virginiana **   Medeola virginiana **   Medeola virginiana **   Medeola virginiana **   Medeola virginiana **   Medeola virginiana **   Medeola virginiana **   -all-   0.505 % 2       -none- 37 Kalmia latifolia Kalmia latifolia **   Kalmia latifolia **   Kalmia latifolia **   Kalmia latifolia **   Kalmia latifolia **   Kalmia latifolia **   Kalmia latifolia **   Kalmia latifolia **   -all-   0.505 % 2       -none- 38 Quercus rubra Quercus rubra **   Quercus rubra **   Quercus rubra **   Quercus rubra **   Quercus rubra **   Quercus rubra **   Quercus rubra **   Quercus rubra **   -all-   0.505 % 2       DBH DBH err Ht. Ht. Err # 12.5 cm ± 2.5 cm     1 stem(s)
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Stratum Definitions:
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