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Add/Drop	Name	Reference	Plots↓	Description
Comm #11911	Atriplex gardneri / Pleuraphis jamesii Dwarf-shrubland » more details accession code: VB.CC.34301.CEGL001441	Western Ecology Working Group of...	0	This association occurs on barren shale slopes and flats in the northern Colorado Plateau of Colorado and Utah. The vegetation is generally sparse and consists of an open canopy of dwarf-shrubs consisting primarily or entirely of <i>Atriplex gardneri</i> and an open to sparse herbaceous stratum in which <i>Pleuraphis jamesii</i> is conspicuous. Other grasses, such as <i>Achnatherum hymenoides</i> and <i>Poa secunda</i>, and a diversity of forbs that are typical of shale badlands are also usually present with sparse cover. The substrate is fine-textured soil derived from marine shale, but there is often a layer of gravel or small rocks on the ground surface.
Comm #11912	Cakile constricta Sparsely Vegetated Alliance » more details accession code: VB.CC.26045.CAKILECONSTRICT	Southeastern Ecology Working Gro...	0	Annual-dominated sand flats on island end flats and upper ocean beaches, within the reach of storm tides and extreme lunar tides. This alliance has more perennial species than the related Cakile edentula Sparsely Vegetated Alliance (A.1861), since the Gulf Coast shoreline is a lower-energy system, and the alliance is less dynamic and less frequently disturbed. Other characteristic species include Iva imbricata, Ipomoea pes-caprae, and Ipomoea imperati.
Comm #11913	CEGL000179 » more details accession code: VB.CC.2805.CEGL000179 NOT CURRENTLY ACCEPTED	EcoArt 2002	0
Comm #11914	Bouteloua gracilis - Buchloe dactyloides - Pleuraphis jamesii Herbaceous Vegetation » more details accession code: VB.CC.36342.CEGL002271	Southeastern Ecology Working Gro...	0	This association occurs on slopes and uplands and is restricted in Oklahoma to Cimarron County. It presumably should occur in immediately adjacent northern Texas, southeastern Colorado, southwestern Kansas, and/or northeastern New Mexico. Associated species include <i>Bothriochloa saccharoides, Bouteloua eriopoda, Eriogonum jamesii, Melampodium leucanthum, Opuntia imbricata</i>, and <i>Zinnia grandiflora</i>.
Comm #11915	Pinus monophylla / Cercocarpus ledifolius Woodland » more details accession code: VB.CC.18680.PINUSMONOPHYLLA	Western Ecology Working Group of...	0
Comm #11916	Cyrilla racemiflora - Persea palustris - Magnolia virginiana Shrubland » more details accession code: VB.CC.36183.CEGL004449	Southeastern Ecology Working Gro...	0	This shrubland vegetation occupies natural lake shorelines, along Carolina bay lakes and associated with and grading into peatlands. The dominant shrubs are <i>Cyrilla racemiflora, Persea palustris</i>, and <i>Magnolia virginiana</i>. Conceptually, this association shows some transitional character towards bay forests. This association occurs on peats adjacent to highly acidic waters of Carolina bay lakes.
Comm #11917	Pascopyrum smithii - Bouteloua gracilis Herbaceous Vegetation » more details accession code: VB.CC.33459.CEGL001578	Western Ecology Working Group of...	0	This western wheatgrass - blue grama prairie of the southern Great Plains, Chihuahuan Desert and western New Mexico mountains of the United States was once an extensive grassland. Stands occur within montane swales or along upland valley bottoms. It generally occurs on northerly or northeasterly aspects at elevations between 915 and 2440 m (3000-8000 feet). Slopes are typically gentle with fine-textured and well-developed soils that are predominantly from eroded Paleozoic sandstone and limestone. Ground cover is characterized by scattered bunchgrasses and patches of the rhizomatous grasses and litter with exposed soil and gravel in the intergrass spaces. Luxuriant cover that can be dominated by either <i>Bouteloua gracilis</i> or <i>Pascopyrum smithii</i> typifies this grassland. <i>Juniperus monosperma</i> or <i>Pinus edulis</i> communities usually surround this swale association. In New Mexico, <i>Atriplex canescens</i> is the most frequently occurring and abundant shrub, with <i>Ericameria nauseosa, Opuntia phaeacantha</i>, and <i>Gutierrezia sarothrae</i> common associates, but overall cover seldom exceeds 2.5%. Graminoid diversity is usually low, with scattered grasses such as <i>Elymus elymoides, Koeleria macrantha</i>, and <i>Muhlenbergia repens</i> often present. In Kansas, <i>Bouteloua curtipendula</i> and <i>Buchloe dactyloides</i> may also be present. The shrub layer is very open and moderate in diversity and generally includes <i>Atriplex canescens</i> and <i>Krascheninnikovia lanata</i> (which both occur as phases and can become dominant in disturbed areas), as well as <i>Opuntia imbricata</i> and <i>Opuntia phaeacantha</i>. Forb diversity and cover are generally low.
Comm #11918	Pascopyrum smithii - Nassella viridula Herbaceous Vegetation » more details accession code: VB.CC.33613.CEGL001583	Western Ecology Working Group of...	0	This western wheatgrass - needlegrass community is common across much of the northern Great Plains of the United States and possibly Canada. Stands occur in narrow valleys, on stream terraces, and on rolling uplands. The soils are usually loams with well-developed profiles. It is dominated by mid grasses with a moderate to high vegetation cover. The dominant species are <i>Pascopyrum smithii</i> and <i>Nassella viridula</i>. Other mid grasses in this community are <i>Elymus lanceolatus, Hesperostipa comata (= Stipa comata), Koeleria macrantha, Poa</i> spp., <i>Sporobolus cryptandrus</i>, and, on sandier soils, <i>Calamovilfa longifolia</i>. Shorter graminoids are common, including <i>Bouteloua gracilis, Carex duriuscula (= Carex eleocharis), Carex filifolia</i>, and <i>Carex inops ssp. heliophila</i>. Where it is present within the range of this community, <i>Carex pensylvanica</i> may be abundant. The forbs <i>Astragalus</i> spp., <i>Achillea millefolium, Sphaeralcea coccinea, Artemisia ludoviciana</i>, and <i>Lepidium densiflorum</i> are also typical of this community.
Comm #11919	Salix drummondiana / Carex scopulorum var. prionophylla Shrubland » more details accession code: VB.CC.32444.CEGL001584	Western Ecology Working Group of...	0	This association is relatively abundant in the subalpine zone of the northeast Cascades and less common in the Canadian Rockies of Washington. It may extend into British Columbia along the border. This wet, high-elevation shrub fen is usually located between 1220-1922 m (4000-6300 feet) elevation and is dominated by tall willows (over 2 m). It is usually found along very low- to moderately low-gradient streams or with ponds or lakes in fen shrublands. Soils are typically well-aerated, nutrient-rich sedge peat soils with a shallow water table and surface water apparent during the growing season. <i>Salix drummondiana</i> is the most common shrub although <i>Salix boothii</i> can be dominant. A shorter willow, <i>Salix farriae</i>, can be common and subdominant in some stands. <i>Picea engelmannii</i> trees usually appear in the fen as scattered individuals. <i>Carex scopulorum var. prionophylla</i> dominates the community and may share some space with <i>Carex utriculata</i>. <i>Calamagrostis canadensis</i> is the only other species that occurs regularly, although in low abundance. <i>Sphagnum</i> mosses are common and can be abundant.
Comm #11920	CEGL004753 » more details accession code: VB.CC.6265.CEGL004753 NOT CURRENTLY ACCEPTED	EcoArt 2002	0