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Comm #7031	Vittaria appalachiana - Heuchera parviflora var. parviflora - Houstonia serpyllifolia / Plagiochila spp. Herbaceous Vegetation » more details accession code: VB.CC.35041.CEGL004302	Southeastern Ecology Working Gro...	0	This community includes herbaceous vegetation on rock substrates associated with the spray of cascades and waterfalls in the Southern Blue Ridge and adjacent portions of the Piedmont. It is found in southwestern North Carolina, northwestern South Carolina, and northeastern Georgia, in the escarpment gorges of the Southern Blue Ridge and west of the escarpment in eastern Tennessee. It occurs on saturated rock outcrops, on nearly vertical rock surfaces and ledges, slopes, and crevices with shallow soils which are constantly saturated. Vegetative coverage is sparse to moderate with 50-75% unvegetated surface (bedrock) possible. Vegetation grows in cracks and on organic accumulations on ledges. It is characterized by a variable but unique assemblage of vascular herbs, algae, and bryophytes, many of which are endemic to this community. Composition of this community varies from location to location, in part due to its insular nature. Characteristic species include liverworts (<i>Bazzania denudata, Conocephalum salebrosum (= Conocephalum conicum), Oxalis montana, Pellia epiphylla, Pellia neesiana, Plagiochila austini, Plagiochila caduciloba, Plagiochila sharpii ssp. sharpii, Plagiochila</i> spp., <i>Plagiochila sullivantii, Riccardia multifida</i>); mosses (<i>Bryocrumia vivicolor, Dichodontium pellucidum, Fissidens osmundioides, Hyophila involuta, Mnium marginatum, Oncophorus raui, Plagiomnium affine, Plagiomnium carolinianum, Pseudotaxiphyllum distichaceum, Sphagnum girgensohnii, Sphagnum quinquefarium, Thalictrum</i> spp., <i>Thamnobryum alleghaniense</i>); ferns (<i>Adiantum pedatum, Asplenium monanthes, Asplenium montanum, Asplenium trichomanes ssp. trichomanes, Cystopteris protrusa, Grammitis nimbata (= Micropolypodium nimbatum), Hymenophyllum tayloriae, Polypodium virginianum, Trichomanes boschianum, Trichomanes intricatum, Vittaria appalachiana</i>); and other vascular species (<i>Galax urceolata, Heuchera parviflora var. parviflora, Houstonia serpyllifolia, Huperzia porophila, Hydrocotyle americana, Impatiens capensis, Phegopteris connectilis, Saxifraga careyana, Saxifraga caroliniana, Carex biltmoreana</i>). This community varies in composition with no consistent dominant species. Nominal species are either constant or regional endemics. South and west of the Blue Ridge Escarpment, this association is less diverse than those occurrences in the central portion of the range.
Comm #7032	Open Cliff Sparsely Vegetated Alliance » more details accession code: VB.CC.18705.OPENCLIFFSPARSE	Midwestern Ecology Working Group...	0	This is technically not an alliance. It is a placeholder for a group of sparsely vegetated associations that may or may not have adequate vegetation descriptions, but do share certain substrate characteristics.
Comm #7033	Geum rossii Herbaceous Vegetation » more details accession code: VB.CC.18906.GEUMROSSIIHERBA	Western Ecology Working Group of...	0
Comm #7034	Bouteloua hirsuta - Bouteloua gracilis - Bouteloua eriopoda Shrub Herbaceous Alliance » more details accession code: VB.CC.22457.BOUTELOUAHIRSUT	Southeastern Ecology Working Gro...	0	This alliance includes open grasslands with scattered xeromorphic desert shrubs, occurring in the Chihuahuan Desert region. These grasslands are typically dominated by Bouteloua hirsuta, Bouteloua gracilis, Bouteloua eriopoda, and other desert grasses. Associated dominants can include Acacia neovernicosa, Larrea tridentata, and Yucca faxoniana.
Comm #7035	Sida fallax Coastal Dry Shrubland » more details accession code: VB.CC.25708.SIDAFALLAXCOAST	Western Ecology Working Group of...	0
Comm #7036	Boreal Wet Scrub Birch Shrubland » more details accession code: urn:lsid:ecoobs.vegbank.org:commConcept:9017-{016FD4EE-D104-49F5-90C5-8B1C0396C3C9}	Western Ecology Working Group of...	0
Comm #7037	CEGL003025 » more details accession code: VB.CC.5236.CEGL003025 NOT CURRENTLY ACCEPTED	EcoArt 2002	0
Comm #7038	Andropogon gerardii - Phlox subulata - Solidago simplex var. racemosa - Packera paupercula Herbaceous Vegetation » more details accession code: VB.CC.25546.ANDROPOGONGERAR	Eastern Ecology Working Group of...	0	This riverside outcrop vegetation of the Potomac River in Virginia and Maryland occurs on metamorphic rock ledges that are catastrophically flood-scoured. The vegetation is generally herbaceous but may range from sparsely vegetated to herbaceous with sparse shrubs. The habitat is variable, with small pools interspersed among shaded microhabitats and exposed xeric microhabitats. Typical species include Phlox subulata, Solidago simplex var. racemosa (= Solidago racemosa), Solidago rupestris, Andropogon gerardii, and Leucothoe racemosa. In more shaded locations, Asplenium platyneuron, Aquilegia canadensis, and Mitchella repens occur, while Danthonia spicata is more commonly found in exposed, xeric openings. This association is apparently restricted to the Great Falls area.
Comm #7039	Encelia virginensis Shrubland » more details accession code: VB.CC.20286.ENCELIAVIRGINEN	Western Ecology Working Group of...	0
Comm #7040	Deschampsia caespitosa - Danthonia californica Coastal Herbaceous Vegetation » more details accession code: VB.CC.33863.CEGL003325	Western Ecology Working Group of...	0	This association is only known from the Point Reyes National Seashore. Information about its global characteristics is not available without additional inventory. It was likely to be more widespread along the coast from Santa Cruz County, California, north to Washington, prior to the introduction of invasive exotic annual and perennial grasses. Other similar stands at Salt Point State Park occur adjacent to the coastal bluffs as a rim of native grassland adjacent to non-native annual and perennial grassland. Stands of this grassland association form a continuous herb layer. There is usually less than 20% cover between 0.5 and 1 m tall. It is dominated by <i>Deschampsia caespitosa</i> and <i>Danthonia californica</i>. <i>Aira caryophyllea, Plantago lanceolata, Lolium perenne, Rumex acetosella</i> and <i>Nassella pulchra</i> may also be present.