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Add/Drop	Name	Reference	Plots↓	Description
Comm #5151	Artemisia tridentata ssp. vaseyana / Carex geyeri Shrub Herbaceous Vegetation » more details accession code: VB.CC.34369.CEGL001532	Western Ecology Working Group of...	0	This shrubland association is present in southern and central Idaho, western Wyoming, northeastern Oregon, and central and western Colorado. Stands are found above 1524 m (5000 feet) elevation predominantly on southerly aspects of moderate to steep mountain ridges and slopes. In Colorado, the association is found on gentle slopes or ridgetops. Soils are derived from colluvial deposits with a moderate to high percentage of course fragments. <i>Artemisia tridentata ssp. vaseyana</i> dominates the shrub overstory. Commonly the shrub <i>Symphoricarpos oreophilus</i> may be present but with low cover. The understory is dominated by <i>Carex geyeri</i>. Common herbaceous species include <i>Arenaria aculeata, Eriogonum heracleoides, Eriogonum umbellatum, Festuca idahoensis, Hesperostipa comata ssp. comata</i>, and <i>Lupinus argenteus</i>.
Comm #5152	Schoenoplectus acutus - (Schoenoplectus fluviatilis) Freshwater Herbaceous Vegetation » more details accession code: VB.CC.24242.SCHOENOPLECTUSA	Midwestern Ecology Working Group...	0	This hardstem bulrush - mixed bulrush community type is found mainly in the northeastern Great Plains and northern tallgrass prairie region of the United States and Canada. Stands occur on wetland sites that are flooded for most or all of the growing season. Soils can be largely mineral or contain significant organic matter. Tall graminoids, particularly Schoenoplectus acutus (= Scirpus acutus) and, less frequently, Schoenoplectus fluviatilis (= Scirpus fluviatilis), dominate the vegetation. These two species may grow taller than 2 m and sometimes nearly exclude other species. Other species that can be present include Carex atherodes (especially in the shallower parts of the community), Lemna spp., Schoenoplectus tabernaemontani (= Scirpus tabernaemontani), Typha latifolia, and Utricularia macrorhiza (= Utricularia vulgaris). Schoenoplectus tabernaemontani can be codominant in places.
Comm #5153	Pinus ponderosa - Quercus kelloggii / Arctostaphylos viscida Woodland » more details accession code: VB.CC.32822.CEGL008694	Western Ecology Working Group of...	0	This ponderosa pine woodland association is currently known from Yosemite National Park in California but is likely to occur throughout the Sierra Nevada and perhaps elsewhere in northern California. It is also reported from the Klamath Mountains of Oregon. The following description is based on occurrences at Yosemite National Park. Additional global information will be added as it becomes available. Stands are found at relatively xeric sites at low elevations (520-1370 m [1700-4500 feet]) on the low to high portions of mostly south- to southwest-facing (and occasionally northeast-facing at the lowest elevations), gentle to moderately steep (7-16°), mostly linear mountain slopes. Soils are poorly developed and fairly rocky with textures ranging from sandy loam to clay loam from metamorphic and granitic parent material. Soils are somewhat poorly drained to well-drained. Litter is high. This association is dominated by <i>Pinus ponderosa</i> in the open to intermittent overstory tree layer and <i>Arctostaphylos viscida</i> in the open to continuous understory shrub layer. Often present in the overstory are <i>Pinus lambertiana</i> and <i>Quercus kelloggii</i>. <i>Pinus attenuata</i> and <i>Quercus wislizeni</i> may occasionally be found contributing minor cover. Often in the shrub layer is <i>Toxicodendron diversilobum</i>. <i>Bromus diandrus, Galium parisiense, Hypochaeris glabra</i>, and <i>Vulpia myuros</i> common. <i>Quercus kelloggii</i> in either seedling, sapling (shrubby) or tree form is a constant, although at usually relatively low cover. A variety of other species may also be found contributing minor cover including <i>Comandra umbellata ssp. californica, Bromus hordeaceus, Chamaebatia foliolosa, Clarkia purpurea, Eriogonum nudum, Lessingia leptoclada, Lotus unifoliolatus var. unifoliolatus, Streptanthus tortuosus, Stephanomeria virgata</i>, and <i>Trifolium wormskioldii</i>.
Comm #5154	Picea mariana - Populus tremuloides - Betula papyrifera / Pleurozium schreberi Forest » more details accession code: VB.CC.25994.PICEAMARIANAPOP	Midwestern Ecology Working Group...	0
Comm #5155	Picea glauca Alluvial Black Hills Forest » more details accession code: VB.CC.26460.PICEAGLAUCAALLU	Midwestern Ecology Working Group...	0	The white spruce alluvial forest type is only known from the Black Hills of the United States. In the Hills, it is restricted to higher elevations in the Central Core and on the Limestone Plateau. It occurs in both narrow high-gradient drainages, and in broader lower-gradient drainage bottoms. The type is characterized by somewhat open to closed canopies dominated by Picea glauca. The understory is highly variable. Smaller spruce and Pinus ponderosa, as well as Populus tremuloides, Betula papyrifera and Acer negundo, may form a subcanopy. The understory may be sparse, with shrub and herbaceous cover each less than 25%. At other sites, the understory consists of species typical of riparian shrubland and wet meadow types, including Salix bebbiana, Betula occidentalis, Cornus sericea, Calamagrostis canadensis, and Carex nebrascensis.
Comm #5156	Pascopyrum smithii - Hordeum jubatum Herbaceous Vegetation » more details accession code: VB.CC.33884.CEGL001582	Western Ecology Working Group of...	0	This wheatgrass saline prairie type is found in the northern Great Plains of the United States and adjacent Canada. Stands occur in temporarily flooded sites (playas and stock ponds) with deep, poorly drained, clayey, alkaline-saline soils. Stands occur as small patches in temporarily flooded sites, surrounded by grasslands or shrublands. Grasses dominate the vegetation. <i>Pascopyrum smithii</i> (or <i>Elymus lanceolatus</i>) and <i>Hordeum jubatum</i> are the major species, and other species from the surrounding matrix vegetation may be present.
Comm #5157	Geum rossii - Trifolium spp. Herbaceous Vegetation » more details accession code: VB.CC.20350.GEUMROSSIITRIFO	Western Ecology Working Group of...	0	This vegetation type has been described from the alpine zone of the Absaroka Mountains of northwestern Wyoming and the Beartooth Plateau of northwestern Wyoming and south-central Montana. It occurs on sites where little snow accumulates, but that are somewhat protected from the wind. The vegetation is a combination of upright forbs and cushion plants with few graminoids. Geum rossii var. turbinatum dominates or codominates, and a series of cushion plants (especially Trifolium nanum, Trifolium dasyphyllum, Sedum lanceolatum, Phlox multiflora, Arenaria congesta, and Minuartia obtusiloba, Smelowskia calycina) and upright forbs (especially Polygonum bistortoides, Cerastium arvense, Lomatium cous, Potentilla diversifolia, and Besseya wyomingensis) may contribute substantial cover. Luzula spicata, Trisetum spicatum, and Carex nardina are the most common graminoids.
Comm #5158	Baccharis halimifolia - Iva frutescens / Panicum virgatum Shrubland » more details accession code: VB.CC.31405.CEGL003921	Eastern Ecology Working Group of...	0	This maritime shrubland of the eastern states occurs in association with salt marshes, occurring along the upper edges of the marsh, at the transition to uplands. <i>Iva frutescens</i> is the most characteristic and dominant shrub species, and <i>Baccharis halimifolia</i> is a common associate. Other associated shrubs include <i>Morella pensylvanica (= Myrica pensylvanica)</i> in the northern portion of the range, while <i>Borrichia frutescens, Morella cerifera (= Myrica cerifera)</i>, and <i>Juniperus virginiana var. silicicola</i> are frequent associates in the southern part of the range. <i>Spartina patens</i> is a characteristic and usually abundant grass; other common herbaceous associates include <i>Panicum virgatum, Distichlis spicata, Hibiscus moscheutos, Toxicodendron radicans, Teucrium canadense, Festuca rubra, Limonium carolinianum, Atriplex prostrata, Sabatia stellaris, </i><i>Solidago sempervirens, </i><i>Sabatia dodecandra</i>, and in the north <i>Hierochloe odorata</i> and <i>Juncus gerardii</i>, and in the south <i>Setaria parviflora</i>. This community often forms an abrupt transition from salt marsh to upland reflecting the relatively higher elevation and less frequent tidal flooding. Shrub cover in this situation tends to be fairly dense, and herbs are sparsely distributed. Storm-induced disturbance causes periodic die-back of the shrubs restricting the extent of their spread.
Comm #5159	A.1153 » more details accession code: VB.CC.927.A1153 NOT CURRENTLY ACCEPTED	EcoArt 2002	0	This alliance consists of tropical and subtropical coastal grasslands (sometimes with scattered shrubs) dominated or codominated by ~Uniola paniculata$. This alliance is separated from the temperate alliance (V.A.5.N.a) by the presence of a substantial tropical floristic component. Vegetation described in this alliance is dominated by ~Uniola paniculata$, with other herbs including ~Hymenocallis latifolia, Sesuvium portulacastrum, Panicum$ spp., ~Sporobolus virginicus, Sporobolus$ spp., ~Chamaesyce mesembrianthemifolia, Suaeda linearis, Flaveria linearis, Melanthera$ sp., ~Alternanthera maritima, Chamaesyce bombensis, Croton punctatus, Helianthus debilis ssp. debilis, Heliotropium polyphyllum, Ipomoea pes-caprae, Oenothera humifusa, Sesuvium portulacastrum$, and ~Spartina patens$. Woody plants can have slight to (often substantial) cover, of species such as ~Argusia gnaphalodes, Coccoloba uvifera, Ernodea littoralis, Iva imbricata, Opuntia stricta, Phyllanthus abnormis, Sabal palmetto, Suriana maritima, Pithecellobium keyense, Lantana involucrata, Cynanchum northropiae$, and ~Caesalpinia bonduc$. In the southeastern United States, this alliance is represented in only a limited number of sites in southern Florida. Many examples have substantial cover of woody vines and shrubs.
Comm #5160	Acacia farnesiana - Opuntia stricta var. dillenii - Lycium carolinianum var. quadrifidum / Spartina patens Shrubland » more details accession code: VB.CC.36379.CEGL003932	Southeastern Ecology Working Gro...	0	This association occurs on coastal dunes and shell ridges along the upper Texas and western Louisiana coasts. It is a sparse to dense thicket of primarily thorny shrubs, dominated by <i>Acacia farnesiana (= Acacia minuta ssp. minuta), Opuntia stricta var. dillenii, Lycium carolinianum var. quadrifidum, Zanthoxylum clava-herculis</i>, and <i>Yucca aloifolia</i>. <i>Celtis laevigata</i> is often present as a small tree. The herb layer contains various dune herbs, but is usually dominated by <i>Spartina patens</i>, with <i>Astragalus leptocarpus</i> being common. This community is commonly grazed, and the abundance of thorny and spiny species may be partly the result of grazing pressure.