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Add/Drop	Name	Reference	Plots↓	Description
Comm #5211	Quercus macrocarpa - Quercus shumardii - Carya cordiformis / Chasmanthium latifolium Forest » more details accession code: VB.CC.25322.QUERCUSMACROCAR	Southeastern Ecology Working Gro...	0	This association is found in the United States in the southeastern Great Plains and possibly adjacent Ozark-Ouachita region, ranging from northeastern Oklahoma and the Arbuckle Mountains of Oklahoma to southeastern Kansas and adjacent Missouri. Stands occur on floodplains, where they are temporarily flooded for short periods as a result of river flooding, and more rarely on other mesic habitats. Soils are deep, medium-textured and formed in alluvium. The vegetation is dominated by a closed-canopy layer of trees, with Quercus macrocarpa, Quercus shumardii, and Carya cordiformis the major dominants. Other characteristic species include Carya illinoinensis, Frangula caroliniana, Populus deltoides, and Ulmus americana in Oklahoma and Acer negundo, Acer saccharinum, Fraxinus pennsylvanica, and Platanus occidentalis in Kansas. Ground layer species include Carex spp. and Leersia oryzoides.
Comm #5212	Festuca brachyphylla Herbaceous Vegetation » more details accession code: VB.CC.33723.CEGL001797	Western Ecology Working Group of...	0	This high-elevation herbaceous association is found in Idaho, Oregon, Washington, Utah, Wyoming, Colorado and possibly California. This description is based on information only from Great Sand Dunes National Park and Preserve in Colorado. Additional global information will be added as it becomes available. This association is documented from a steep (32-degree), west-facing high colluvial slope at 3612 m elevation. The soil is moderately well-drained with a silt loam texture. Ground surface is generally covered in vegetation (40%) and rocks (40%). This moderately vegetated treeline stand is dominated by <i>Festuca brachyphylla</i> with 30% cover. Forb species such as <i>Minuartia obtusiloba, Eriogonum flavum</i>, and <i>Achillea millefolium</i> make up another 30% cover. <i>Dasiphora fruticosa ssp. floribunda (= Dasiphora floribunda)</i> is present in trace amounts.
Comm #5213	Quercus stellata - Quercus marilandica - Carya (alba, pallida) Upper East Gulf Coastal Plain Woodland » more details accession code: VB.CC.35621.CEGL003952	Southeastern Ecology Working Gro...	0	This community occurs on xeric sites in the Upper East Gulf Coastal Plain of western Tennessee and northern Mississippi. Such sites may include sandy river bluffs, sandy uplands, or even clayey uplands. In all cases the woodland structure is believed to be maintained in part by xerophytic conditions, although fire was likely an important process that historically favored open stands. Due to fire suppression, large areas of this type have been lost. Remaining stands may have greater overstory density and somewhat altered species composition with notable declines in <i>Quercus marilandica</i> abundance. Intact, high-quality examples of this community have a somewhat stunted and open canopy dominated by <i>Quercus stellata</i> and <i>Quercus marilandica</i>. Other typical canopy species include <i>Carya pallida</i> and/or <i>Carya alba</i>. The understory is <i>Vaccinium arboreum, Quercus marilandica, Quercus stellata</i>, and <i>Carya pallida</i>. The herb layer is a mix of herbs with some grasses, but <i>Opuntia humifusa</i> is the most noteworthy indicator of the xeric conditions, at least in stands on sandy soil above the Wolf River of west Tennessee.
Comm #5214	Hypericum reductum - Licania michauxii / Andropogon capillipes - Polygonella gracilis - Xyris caroliniana Dwarf-shrubland » more details accession code: VB.CC.36004.CEGL003953	Southeastern Ecology Working Gro...	0	This association consists of temporarily flooded interdune swales dominated by <i>Hypericum reductum</i>. Other typical species include <i>Licania michauxii, Serenoa repens, Polygonella gracilis, Xyris caroliniana, Andropogon capillipes</i> ('dryland variant'), <i>Cladonia prostrata</i>, and <i>Cladonia leporina</i>. Scattered clumps of shrubs and trees may occur, including <i>Ilex glabra, Serenoa repens, Quercus geminata, Quercus myrtifolia, Pinus elliottii var. elliottii</i>, and <i>Pinus clausa</i>. Although this association generally presents a very xeric appearance, the occasional flooding maintains its open aspect compared to dense scrub upslope.
Comm #5215	Carex (atlantica, echinata, leptalea, lurida) - Solidago patula Herbaceous Vegetation » more details accession code: VB.CC.23906.CAREXATLANTICAE	Southeastern Ecology Working Gro...	0	This broadly defined type represents the least floristically distinctive Southern Appalachian Herb Bog vegetation, occurring most typically peripheral to the main bulk of the Appalachians and at lower elevations. It generally lacks distinctive Southern Appalachian endemic components and also is depauperate in northern disjunct species (as compared to other associations in the alliance). The shrub stratum may be patchy or locally well-developed, and consists of species such as Spiraea tomentosa, Kalmia latifolia, Lindera benzoin var. benzoin, Lyonia ligustrina var. ligustrina, and Alnus serrulata. Typical dominants in the well-developed herbaceous stratum are Carex atlantica, Carex folliculata, Carex intumescens, Carex leptalea, Carex lurida, Osmunda cinnamomea, and Solidago patula var. patula. Sphagnum is common.
Comm #5216	Vaccinium (angustifolium, myrtilloides, pallidum) Central Appalachian Dwarf-shrubland » more details accession code: VB.CC.31445.CEGL003958	Fike, J. 1999. Terrestrial and p...	0	This association occurs on mid- to high-elevation acidic rock outcrops or summits and is characterized by abundant dwarf <i>Vaccinium</i> spp. in areas with frequent fire and/or droughty soils. This community is dominated by heaths or heath-like shrubs (typically blueberries <i>Vaccinium angustifolium, Vaccinium myrtilloides, Vaccinium stamineum, Vaccinium pallidum (= Vaccinium vacillans)</i>) and is commonly referred to as "heath barrens." Soils are shallow accumulations of organic material on bedrock habitats. Small trees may be present but are very sparse. The herbaceous layer is usually sparse with low diversity. In addition to <i>Vaccinium</i>, the shrub layer typically contains other low shrubs such as <i>Gaylussacia baccata, Kalmia angustifolia, Lyonia ligustrina</i>, and <i>Comptonia peregrina</i>, with <i>Kalmia latifolia</i> present in some areas. <i>Quercus ilicifolia</i> is frequently present, with variable cover, above the low heaths. Herbaceous plants scattered among the shrubs include <i>Deschampsia flexuosa, Schizachyrium scoparium, Carex pensylvanica, Carex argyrantha, Danthonia spicata, Piptatherum pungens (= Oryzopsis pungens), Lysimachia quadrifolia, Rubus hispidus, Melampyrum lineare, Solidago canadensis, Lycopodium dendroideum</i>, and <i>Lycopodium digitatum</i>. Mosses (including <i>Polytrichum</i> spp.) and lichens usually are present.
Comm #5217	Cardamine cordifolia - Caltha leptosepala Herbaceous Vegetation » more details accession code: VB.CC.34035.CEGL001958	Western Ecology Working Group of...	0	This high-elevation wet meadow association is found in the Rocky Mountains of Colorado and Wyoming. This description is based on information from Great Sand Dunes National Park and Preserve in Colorado. Additional global information will be added as it becomes available. This association is known from a high cirque floor at 3536 m elevation. Slopes are moderately steep and northwest-facing. The site is seasonally flooded with poorly drained silt loam soils. Ground cover is dominated by bare soil (50%) and litter and duff (30%). Herbaceous vegetation cover ranges from 75-85% with 55-65% forb cover and 15-25% graminoid cover. Dominant species include <i>Caltha leptosepala</i> (30%) and <i>Cardamine cordifolia</i> (30%). Other commonly occurring species with 10% cover each include <i>Carex scopulorum, Polygonum bistortoides</i>, and <i>Juncus drummondii</i>.
Comm #5218	Phlox diffusa ssp. longistylis - Carex spectabilis Herbaceous Vegetation » more details accession code: VB.CC.33138.CEGL001979	Western Ecology Working Group of...	0
Comm #5219	III.B.1 » more details accession code: VB.CC.196.IIIB1	EcoArt 2002	0
Comm #5220	A.902 » more details accession code: VB.CC.2526.A902 NOT CURRENTLY ACCEPTED	EcoArt 2002	0	Dune thickets of the Mid-Atlantic Coast; this alliance includes maritime shrublands dominated by ~Morella pensylvanica (= Myrica pensylvanica)$, with ~Baccharis halimifolia, Rhus copallinum$, and stunted individuals of ~Pinus taeda$. ~Prunus maritima$ is characteristic of this community from Maryland to the north. The constant movement of sand in this community limits the herbaceous cover. Typical herbaceous species include ~Ammophila breviligulata, Cenchrus tribuloides, Chamaesyce polygonifolia, Cyperus grayi, Dichanthelium acuminatum, Diodia teres, Hudsonia tomentosa, Lechea maritima, Oenothera humifusa, Panicum amarum var. amarulum, Parthenocissus quinquefolia, Rumex acetosella, Solidago sempervirens, Spartina patens, Toxicodendron radicans$, and ~Triplasis purpurea$. This maritime shrubland usually occupies the intermediate areas between the very unstable oceanward portions of the dunes and the more protected backdunes, where it forms partially open to dense shrub thickets. The substrate is sand with no soil profile development, and with variable amounts of accumulated leaf litter. Where this community occupies the lee side of foredunes, greater exposure to winds and storms contributes to a shorter stature and more open aspect of the vegetation. Here there are large patches of open unvegetated or sparsely vegetated sand.