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Add/Drop	Name	Reference	Plots↓	Description
Comm #12141	Kobresia myosuroides - Carex rupestris var. drummondiana Herbaceous Vegetation » more details accession code: VB.CC.33511.CEGL001907	Western Ecology Working Group of...	0	This association is a major upland alpine turf community of the southern Rocky Mountains. Sites are typically dry-mesic meadows and turf in the middle to lower alpine, which may extend into transition areas with fell-fields. Stands often occur on gentle to moderate, convex slopes (1-30%) and saddles, typically with NE-NW aspects that are exposed to prevailing winds which keep sites snow-free during most of the winter. Soils are relatively deep (0.5-1 m) and well-developed for alpine environments. Soils are fine to coarse loams typically with distinct soil horizons present that indicate long periods without significant disturbance. There is often low to moderate (to 50 %) cover of large and small surface rocks. Bare ground cover is generally low but can be moderately high in transition areas with fellfields, which have more xeric with less developed, coarser textured soils than typical <i>Kobresia myosuroides</i>-dominated alpine turf. Vegetation is characterized by a moderately dense to dense (50-90% cover) herbaceous layer codominated by the cespitose perennial graminoids <i>Kobresia myosuroides</i> and <i>Carex rupestris var. drummondiana</i> that form a dense turf. If present, <i>Geum rossii, Thalictrum alpinum</i>, and <i>Trifolium dasyphyllum</i> do not codominate. <i>Minuartia obtusiloba (= Arenaria obtusiloba)</i> and/or <i>Selaginella densa</i> are often present and may codominate some stands. Other important species with lower cover include graminoids <i>Calamagrostis purpurascens, Carex elynoides, Carex scopulorum, Festuca brachyphylla, Poa glauca ssp. rupicola (= Poa rupicola)</i>, and forbs <i>Arenaria fendleri, Campanula uniflora, Castilleja occidentalis, Lloydia serotina, Mertensia lanceolata, Tetraneuris grandiflora, Oreoxis alpina, Polygonum bistortoides, Polygonum viviparum, Sedum lanceolatum</i>, and <i>Silene acaulis</i>. Diagnostic of this association is the dominance of <i>Kobresia myosuroides</i> and <i>Carex rupestris var. drummondiana</i> in a dense alpine turf.
Comm #12142	Leucopoa kingii - Carex elynoides Herbaceous Vegetation » more details accession code: VB.CC.33157.CEGL001911	Western Ecology Working Group of...	0	This plant association occurs on broad, gentle alpine ridges of the Challis Volcanics and Beaverhead Mountains ecoregional sections in east-central Idaho. It occurs on gentle to moderately steep, convex, southwest- to north-facing ridgetops. Sites are on windward exposures at 3020-3170 m (9900-10,400 feet) elevation. Shallow to moderately deep gravelly soils are derived from limestone. <i>Leucopoa kingii (= Festuca kingii)</i> and <i>Carex elynoides</i> are codominant and form a dense, low-growing, fibrous-rooted turf. Associated species occur with low cover, but high constancy, including <i>Poa fendleriana, Poa secunda, Agoseris glauca, Potentilla ovina, Oxytropis sericea</i>, and <i>Erigeron compositus</i>.
Comm #12143	Leucopoa kingii - Phlox pulvinata Herbaceous Vegetation » more details accession code: VB.CC.33155.CEGL001913	Western Ecology Working Group of...	0	This plant association occurs on broad, gentle, low-alpine ridges of east-central Idaho and similar high-subalpine sites in northwestern Wyoming. The association occurs on gentle to moderately steep, convex ridgetops oriented to any aspect. Sites are often on windward exposures at 2990-3140 m (9800-10,300 feet) elevation. Moderately deep, moderately unstable, very gravelly soils are derived from limestone, siliceous volcanic rocks, and quartzite. <i>Leucopoa kingii (= Festuca kingii)</i> is the dominant species in this open, low-growing bunchgrass vegetation. Associated species include <i>Carex elynoides, Minuartia obtusiloba, Phlox pulvinata, Lupinus argenteus, Poa secunda</i>, and <i>Agoseris glauca</i>.
Comm #12144	Leucopoa kingii - Poa fendleriana ssp. fendleriana Herbaceous Vegetation » more details accession code: VB.CC.33168.CEGL001914	Western Ecology Working Group of...	0	This plant association occurs on broad, gentle alpine ridges of the Challis Volcanics and Beaverhead Mountains ecoregional sections in east-central Idaho. The association occurs on gentle to moderately steep, low-inclination slopes that are areas of snow and soil accumulation. Elevations range from 2990 to 3140 m (9800-10,300 feet). Moderately deep, stable, gravelly soils are derived from limestone, siliceous volcanic rocks, and quartzite. <i>Leucopoa kingii (= Festuca kingii)</i> forms dense stands with <i>Poa secunda, Poa fendleriana ssp. fendleriana, Lupinus argenteus, Agoseris glauca, Erigeron compositus, Oxytropis sericea</i>, and <i>Cymopterus nivalis</i>.
Comm #12145	Luetkea pectinata - Saxifraga tolmiei Herbaceous Vegetation » more details accession code: VB.CC.33585.CEGL001918	Western Ecology Working Group of...	0
Comm #12146	A.463 » more details accession code: VB.CC.2116.A463 NOT CURRENTLY ACCEPTED	EcoArt 2002	0	This alliance consists of woodlands of ~Cocos nucifera$, typically in maritime situations on sandy flats. ~Cocos nucifera$ generally forms an open canopy, and all natural and semi-natural ~Cocos nucifera$-dominated vegetation is placed in this alliance for now. In the southeastern United States, this alliance is limited to subtropical and tropical areas of southern Florida. It is very widespread in the Neotropics and Paleotropics.
Comm #12147	II.B.1 » more details accession code: VB.CC.199.IIB1	EcoArt 2002	0
Comm #12148	Sibbaldia procumbens - Polygonum bistortoides Herbaceous Vegetation » more details accession code: VB.CC.32768.CEGL001933	Western Ecology Working Group of...	0	This low-growing subalpine and alpine wet meadow type has been described from the Wind River Mountains of west-central Wyoming and the Medicine Bow Mountains of south-central Wyoming and from the Front Range of north-central Colorado. It is a minor plant association and occurs in areas with late-lying snowbanks and in poorly drained depressions. Because these snowbanks do not melt until late July or mid August, these soils remain moist throughout the growing season. The vegetation is characterized by a moderately dense to dense herbaceous layer dominated by <i>Sibbaldia procumbens</i>, with a number of other associated species usually present, such as <i>Calamagrostis canadensis, Carex nigricans</i> (sometimes a codominant), <i>Deschampsia caespitosa, Erigeron</i> spp., <i>Lewisia pygmaea, Juncus drummondii, Trollius laxus ssp. albiflorus</i>, and especially <i>Polygonum bistortoides</i>, which may be present to codominant.
Comm #12149	Silene acaulis Herbaceous Vegetation » more details accession code: VB.CC.32627.CEGL001934	Western Ecology Working Group of...	0	This Rocky Mountain association occurs in alpine fell-fields in southwestern Montana and north-central Colorado. Stands are located on flat to gently sloping ridges and summits. These ridgetops are subject to extremely high winds and are blown free of snow in winter. The ground is covered with rocks that have been stabilized for a long period of time. These fell-field sites differ from talus or scree sites which are located on steeper slopes and are unstable and often moving. Soils are derived from metamorphic or igneous rocks. Vegetation is characterized by an open to dense low herbaceous layer dominated by cushion or mat-forming species that spread horizontally over the ground surface. <i>Silene acaulis</i> is the dominant species. <i>Arenaria fendleri, Carex rupestris, Carex elynoides, Castilleja puberula, Erigeron pinnatisectus, Festuca brachyphylla, Geum rossii, Minuartia obtusiloba, Selaginella densa, Tonestus pygmaeus</i>, and <i>Trifolium dasyphyllum</i> are common associates. Lichens dominate the nonvascular stratum with up to 30% cover. Diagnostic of this fell-field community is the dominance of <i>Silene acaulis</i> with other cushion plants.
Comm #12150	Trifolium parryi Herbaceous Vegetation » more details accession code: VB.CC.32620.CEGL001936	Western Ecology Working Group of...	0	This vegetation association has been described from the alpine meadows and fell-field turfs of the southern Rocky Mountains of Colorado and may extend into Wyoming. Stands are generally found in the upper alpine zone on broad, flat to gently sloping (0-25%) ridges that are covered with moderate to heavy snow during the winter, with southeasterly to southwesterly or northerly aspects. Sites are generally early-melting snowbeds but include later-melting snowbeds on southerly aspects. Substrates are variable and range from deep to shallow, rocky loam and sandy loam soils derived from granite or other igneous or metamorphic rock. Rocks are often exposed at the ground surface. There is usually moderate cover of bare ground and litter (25-50% cover). Mosses and lichens are often present. The vegetation is characterized by an open to dense (to 90% cover) herbaceous layer dominated by <i>Trifolium parryi</i> (>25% cover) and combination of cushion plants, upright forbs and graminoids. Associated forbs species include <i>Artemisia arctica ssp. arctica (= Artemisia norvegica), Artemisia scopulorum, Caltha leptosepala, Castilleja occidentalis, Erigeron melanocephalus, Erigeron simplex, Geum rossii, Minuartia biflora (= Lidia biflora), Oreoxis bakeri, Podistera eastwoodiae, Polygonum bistortoides, Potentilla diversifolia, Ranunculus adoneus, Silene acaulis</i>, and <i>Sibbaldia procumbens</i>. Graminoids are codominant in some stands. <i>Carex albonigra, Carex illota, Carex nardina, Carex phaeocephala, Carex scopulorum, Deschampsia caespitosa, Festuca brachyphylla</i>, and <i>Trisetum spicatum</i> are the most common graminoids. Some stands have an open dwarf-shrub layer of <i>Salix petrophila, Dryas octopetala ssp. hookeriana, Artemisia arctica</i>, or <i>Vaccinium</i> spp. <i>Selaginella densa</i> is present to abundant in many stands. Diagnostic of this snowbed association is the dominance of <i>Trifolium parryi</i> in the herbaceous layer.