Name:
Carex gynandra - Glyceria melicaria - Glyceria striata Seep Alliance
Reference:
NatureServe Biotics 2019
Description:
These are Southern Appalachian, primarily high-elevation seeps and other non-alluvial wetlands found on a variety of sites associated with groundwater seepage. Some characteristic herbaceous species include <i>Calopogon</i> sp., <i>Carex atlantica, Carex gynandra, Carex leptalea ssp. harperi, Carex lurida, Carex scoparia var. scoparia, Carex stipata, Chelone glabra, Doellingeria umbellata, Dryopteris cristata, Eriophorum virginicum, Glyceria melicaria, Glyceria striata, Impatiens capensis, Lycopus virginicus, Lygodium palmatum, Platanthera clavellata, Platanthera flava var. flava, Pogonia ophioglossoides, Osmunda cinnamomea, Osmunda regalis var. spectabilis, Oxypolis rigidior, Polygonum sagittatum, Solidago patula var. patula, Solidago rugosa</i>, and <i>Solidago uliginosa</i>. <i>Sphagnum</i> spp. may occur in mats and include <i>Sphagnum palustre</i> and <i>Sphagnum recurvum</i>. Shrubs can occur as scattered clumps or zones and include <i>Hypericum densiflorum, Ilex opaca, Kalmia latifolia, Aronia arbutifolia, Rhododendron maximum, Salix sericea</i>, and <i>Viburnum nudum var. cassinoides</i>. At higher elevations, component species may include <i>Calamagrostis cainii, Carex debilis, Carex misera, Carex ruthii, Dennstaedtia punctilobula, Gentiana linearis, Glyceria nubigena, Hypericum graveolens, Krigia montana, Parnassia asarifolia</i>, and <i>Solidago glomerata</i>. Woody species in these examples include <i>Abies fraseri, Picea rubens, Prunus pensylvanica, Rhododendron catawbiense, Rubus canadensis</i>, and <i>Vaccinium erythrocarpum</i>. Sites are influenced by high rainfall and low evaporation rates in the mountainous landscapes. Examples may be small-scale patches. These non-alluvial wetlands are generally graminoid-dominated but may have significant coverage by trees or shrubs, especially around their edges. Particularly small examples may be completely shaded by trees within the community occurrence and in the adjacent forests. Examples of this alliance may occur on a variety of sites associated with groundwater seepage. These include areas of flat to very gently sloping topography (0-2°) located near streams, in flats away from the immediate streambed, along wetland margins, and in seepage-fed oxbow fens. These small palustrine, open seeps generally occur at higher elevations, greater than 1200 m [4000 feet]), on upper slopes and ridgetops. Some associations occur on pronounced slopes at elevations over 1525 m (5000 feet).
Accession Code:
urn:lsid:vegbank.org:commConcept:38669-{5AE69D92-4BCF-4C0D-AF58-1623DE083E03}
Plot-observations of this Community Concept:
0
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