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Add/Drop	Name	Reference	Plots↓	Description
Comm #1371	Vitis aestivalis Vine-Scrub » more details accession code: urn:lsid:vegbank.org:commConcept:32748-{898A7068-8268-4D10-B78E-5B266921999F}	NatureServe Biotics 2019	12	This community is strongly dominated by the vine <i>Vitis aestivalis</i>. In Great Smoky Mountains National Park, examples occur on steep to very steep, northerly, middle to upper slopes at intermediate elevations between 610 and 1070 m (2000-3500 feet). All areas sampled showed evidence of disturbance by wind, ice, or logging. <i>Vitis aestivalis</i> vines, extremely thick in patches and covering nearly every tree as well as the ground, have 50-100% coverage. Trees in the canopy and subcanopy have 0-50% coverage and vary from site to site. The shrub layer is sparse. The herb layer is sparse to moderate, decreasing with vine coverage. Herbaceous composition varies from site to site. Beneath the vine canopy, coarse woody debris and tip-up mounds are typical. The dynamics of this community are poorly understood. It apparently originates from disturbance, such as an ice or wind storm, and can persist for decades. Examples can range in size from less than one to ten hectares.
Comm #1372	Quercus lobata / Annual Grass-Herb Woodland » more details accession code: VB.CC.37408.CEGL002871		12	This association is known from northern, central and southern coastal California. This woodland association occurs on flat to steep slopes with variable aspect at low elevations between 230 and 418 m. It is dominated by <i>Quercus lobata</i> in the tree layer and various herbs and grasses such as <i>Brassica nigra, Bromus diandrus</i>, and <i>Lactuca serriola</i> in the herbaceous layer.
Comm #1373	Adenostoma fasciculatum - Ceanothus cuneatus - Salvia mellifera - Malosma laurina Shrubland » more details accession code: VB.CC.37377.CEGL003520		12	This shrubland association occurs on moderately steep to very steep slopes of variable aspect at low elevations between 109 and 521 m. It is dominated by <i>Adenostoma fasciculatum</i> and <i>Ceanothus cuneatus</i> with <i>Salvia mellifera</i> and <i>Malosma laurina</i> as constant subdominants in the shrub layer and has a low cover of mostly non-native exotics in the herbaceous layer. The emergent tree layer may include <i>Quercus agrifolia</i>.
Comm #1374	Rubus canadensis - (Rubus idaeus ssp. strigosus) / Athyrium filix-femina - Solidago glomerata Shrubland » more details accession code: urn:lsid:vegbank.org:commConcept:32751-{3B47D571-90D3-4082-9A23-695FA8CC83A5}	NatureServe Biotics 2019	12	This vegetation occurs at high elevations in the southern Appalachian Mountains of North Carolina, Tennessee, and Virginia. It is a successional type found on exposed sites with frequent or intense natural disturbances (such as shrub invasion of grazed fire meadows). Some examples result from severe disturbance of spruce-fir forests (including balsam woolly adelgid-affected stands and stands which were severely burned after logging). It occurs on exposed summits and high slopes, typically at elevations over 1830 m (6000 feet), but slightly lower in Virginia. This community includes high-elevation Appalachian <i>Rubus</i> thickets and differs from <i>Rubus</i> thickets on grassy balds by predominance of forbs rather than sedges and by frequent presence of <i>Rubus idaeus</i>. Vegetation is variously dominated by dense <i>Rubus canadensis</i> or by dense <i>Athyrium filix-femina ssp. asplenioides</i> and <i>Solidago glomerata</i> (on more-protected sites). In examples related to death of <i>Abies fraseri</i>, the standing dead <i>Abies fraseri</i> often tower above the shrubs and herbs, and there is usually much downed woody debris. There can be a large variation in the structural characteristics of these communities, and in some instances they may approach (or technically reach) a woodland condition with <i>Prunus pensylvanica</i> forming a scattered, open, low-canopy layer (&lt;50% cover). In addition, <i>Sorbus americana, Ilex montana, Acer rubrum, Cornus alternifolia</i>, and <i>Vaccinium simulatum</i> are some other woody species that can occur as a part of this sparse canopy or tall-shrub layer. Other species present include <i>Agrostis perennans, Angelica triquinata, Oclemena acuminata, Carex brunnescens, Carex crinita, Carex intumescens, Carex debilis, Cinna latifolia, Clintonia borealis, Danthonia compressa, Diervilla sessilifolia, Oxalis montana</i>, and <i>Rugelia nudicaulis</i>. Scattered living <i>Picea rubens, Betula alleghaniensis</i>, and <i>Amelanchier laevis</i> may occur. The long-term future of this community is uncertain, but it appears to be fairly stable over periods of several decades. A variation of this community occurs in areas such as Shining Rock Wilderness and parts of the Great Smoky Mountains, where intense fires occurred after logging had taken place. These intense fires, due to the accumulated slash, burned down nearly to mineral soil. These areas do not have as much coarse woody debris from downed spruce or fir and often have a canopy approaching that of a woodland with sparse coverage of <i>Sorbus americana</i> and <i>Prunus pensylvanica</i>.
Comm #1375	MESIC PINUS CONTORTA -- PSEUDOTSUGA FOREST » more details accession code: VB.CC.29457.MESICPINUSCONTO	Peet Dissertation (1975)	12
Comm #1376	North Florida Rich Woodlands » more details accession code: urn:lsid:cvs.bio.unc.edu:commConcept:28570-{AD315E96-B29F-4FC2-AC28-26DEB116DE59} NOT CURRENTLY ACCEPTED	S. Carr PhD	12
Comm #1377	Bromus diandrus - Avena spp. Herbaceous Vegetation » more details accession code: VB.CC.37426.CEGL002916		12	This association is only sampled from the Santa Monica Mountains region. However, it is anecdotally known from much of cismontane California. This herbaceous association occurs on gentle to somewhat steep slopes of variable aspect at elevations between 15 and 550 m. <i>Bromus diandrus</i> is characteristically present in the herbaceous layer and usually codominates with <i>Avena fatua</i> or <i>Avena barbata</i>. <i>Brassica nigra</i> is also usually found in this layer at low cover. <i>Hazardia squarrosa, Artemisia californica</i>, and <i>Lotus scoparius</i> are occasionally found in the shrub layer at low cover, and <i>Quercus lobata</i> infrequently occurs in the tree layer at low cover.
Comm #1378	PINUS FLEXILIS FOREST ALLIANCE » more details accession code: VB.cc.30153.PINUSFLEXILISFO	NVC 2004	12
Comm #1379	LYCIUM PALLIDUM SHRUBLAND ALLIANCE » more details accession code: VB.cc.30127.LYCIUMPALLIDUMS	NVC 2004	12
Comm #1380	Fraxinus nigra - Abies balsamea / Rhamnus alnifolia Swamp Forest » more details accession code: urn:lsid:vegbank.org:commConcept:34654-{59581E30-77FB-478F-AABB-02579059A716}	NatureServe Biotics 2019	12	This community is a lush, circumneutral, seepage-fed, mixed woodland or forested swamp of the Allegheny Mountains region of West Virginia. It is a late-successional, small-patch community limited to frost-pocket wetlands on the Mississippian Greenbrier limestone, at elevations between 960 and 1000 m. The community occurs on temporarily to semipermanently flooded, flat headwater basins and backswamps along small streams. Microtopography is characterized by irregular hummocks formed over buttressed tree roots, tip-up mounds, nurse logs, and decaying wood. Soils are poorly drained muck or organic-rich silt loam over mottled or gleyed silty clay. This rich swamp provides habitat for a number of rare shade-tolerant calciphile wetland species. The canopy is open to closed and dominated by stunted, inundation-stressed <i>Abies balsamea, Fraxinus nigra</i>, and <i>Tsuga canadensis</i>. The subcanopy is dominated by <i>Abies balsamea</i> with varying amounts of <i>Betula alleghaniensis var. alleghaniensis, Tsuga canadensis, Picea rubens</i>, and <i>Fraxinus nigra</i>. The tall-shrub layer is dominated by <i>Alnus incana ssp. rugosa</i> with locally abundant <i>Ilex verticillata</i> and sometimes vigorous <i>Picea rubens</i> regeneration in this stratum. The short-shrub layer is dominated by <i>Rhamnus alnifolia</i> or rarely by <i>Cornus amomum</i>. The herbaceous ground layer is extensive and diverse, typically including over 50 species. The most abundant species are <i>Carex bromoides ssp. bromoides</i> and <i>Glyceria striata</i>. Other common species include <i>Arisaema triphyllum, Caltha palustris var. palustris, Carex gynandra, Dryopteris cristata, Impatiens capensis, Juncus effusus, Lycopus uniflorus, Maianthemum canadense, Osmunda cinnamomea var. cinnamomea, Packera aurea, Polygonum sagittatum, Rubus hispidus</i>, and <i>Solidago rugosa</i>. <i>Poa alsodes</i> is locally abundant. Dominant bryophytes are <i>Sphagnum</i> spp., <i>Hypnum imponens, Thuidium delicatulum</i>, and <i>Bazzania trilobata</i>. The community has a large number of diagnostic species, including <i>Carex bromoides ssp. bromoides, Carex crinita, Clematis virginiana, Cornus amomum, Dryopteris cristata, Epilobium coloratum, Euphorbia purpurea, Fraxinus nigra, Galium asprellum, Geum rivale, Milium effusum var. cisatlanticum, Oxypolis rigidior, Polemonium vanbruntiae, Rhamnus alnifolia</i>, and <i>Smilax tamnoides</i>. Mean species richness of all vascular plants and any nonvascular plants with cover &gt;1% is 70 taxa per 400 m2.