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Alnus viridis ssp. crispa / Carex pensylvanica Shrubland | NatureServe Biotics 2019
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Name: Alnus viridis ssp. crispa / Carex pensylvanica Shrubland Reference: NatureServe Biotics 2019 Description: 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)$$.  Accession Code: urn:lsid:vegbank.org:commConcept:32749-{7BF76BDE-56D2-4222-AF5E-58CA632E22BE} Plot-observations of this Community Concept: 3
	Party Perspective according to: NatureServe (organization) Perspective from: 27-Oct-2010 to: ongoing
	status: accepted Community's Parent: Alnus viridis ssp. crispa Shrub Bald Alliance This Community's Level: Association This Community's Children: [none]		Names:   UID: ELEMENT_GLOBAL.2.684436 NatureServe Explorer   Code: CEGL003891   Translated: Mountain Alder / Pennsylvania Sedge Shrubland   Common: Southern Appalachian Alder Bald   Scientific: Alnus viridis ssp. crispa / Carex pensylvanica Shrubland (convergence) and Synonyms: (similar) Alnus viridis ssp. crispa / Carex pensylvanica Shrubland (similar) CEGL003891 (similar) Alnus viridis ssp. crispa / Carex pensylvanica Shrubland