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Add/Drop	Name	Reference	Plots↓	Description
	Bromus hordeaceus – Erodium (botrys) – Plagiobothrys fulvus Association » more details accession code: NOT CURRENTLY ACCEPTED	MCV2	3
Comm #2911	Rhynchospora alba Marsh » more details accession code: urn:lsid:vegbank.org:commConcept:33251-{E911755D-8204-4408-841E-35FB97288B43}	NatureServe Biotics 2019	3	Floating peat mats in Coastal Plain small depressions and flooded peat wetlands. Stands are dominated by <i>Rhynchospora alba</i>. Other species present include a variety of wetland plants, including <i>Calopogon tuberosus var. tuberosus</i>.
Comm #2912	Alnus viridis ssp. crispa / Carex pensylvanica Shrubland » more details accession code: urn:lsid:vegbank.org:commConcept:32749-{7BF76BDE-56D2-4222-AF5E-58CA632E22BE}	NatureServe Biotics 2019	3	This mainly deciduous shrubland occurs at the highest elevations, greater than 1750 m (5800 feet) in the southern Appalachian Mountains on summit ridges of the Roan Mountain massif. It is dominated by <i>Alnus viridis ssp. crispa</i>, typically 1.5-2 m in height, rarely producing a closed canopy but typically occurring as uniformly spaced clumps about 1 m apart. <i>Rubus allegheniensis</i> is often a codominant with <i>Alnus viridis ssp. crispa</i>. Other shrub species occur with low coverage and include <i>Rhododendron catawbiense, Vaccinium corymbosum</i>, and <i>Crataegus</i> spp. Openings in the shrub canopy are dominated by herbs, mainly <i>Carex pensylvanica</i> and <i>Carex debilis var. rudgei</i> but also may include <i>Danthonia compressa, Deschampsia flexuosa, Viola blanda, Rumex acetosella</i> (exotic), and <i>Athyrium filix-femina ssp. asplenioides</i>. In moister areas, bryophyte cover can be up to 75%, with <i>Polytrichum commune</i> typical. This community can grade into or occur adjacent to high-elevation rock outcrop communities, montane grass-dominated communities, high-elevation herbaceous seeps, or forests dominated by stunted <i>Fagus grandifolia</i>. It may expand into montane grass-dominated communities and may eventually succeed to ~<i>Rhododendron catawbiense</i> Shrubland (CEGL003818)$$.
	Amsinckia (intermedia, menziesii) Association » more details accession code: NOT CURRENTLY ACCEPTED	Great Valley Classification	3
	Centromadia pungens – Lepidium dictyotum Association » more details accession code: NOT CURRENTLY ACCEPTED	Great Valley Classification	3
Comm #2913	BARREN GROUND » more details accession code: VB.cc.29901.BARRENGROUND	NVC 2004	3
	Baccharis pilularis Association » more details accession code: NOT CURRENTLY ACCEPTED	MCV2	3
	Centromadia pungens – Lepidium dictyotum Association » more details accession code: NOT CURRENTLY ACCEPTED	Great Valley Classification	3
	Isocoma acradenia Alkaline Association » more details accession code: NOT CURRENTLY ACCEPTED	Great Valley Classification	3
Comm #2914	TRITICUM AESTIVUM HERBACEOUS ALLIANCE » more details accession code: VB.cc.30327.TRITICUMAESTIVU	NVC 2004	3