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Name
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Reference
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Description |
Comm #11811
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Juniperus occidentalis / Artemisia arbuscula / Pseudoroegneria spicata Wooded Herbaceous Vegetation
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accession code: VB.CC.33611.CEGL001717
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Western Ecology Working Group of... |
0
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Comm #11812
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CEGL002442
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accession code: VB.CC.4883.CEGL002442
NOT CURRENTLY ACCEPTED
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EcoArt 2002 |
0
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Comm #11813
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Artemisia tridentata ssp. wyomingensis / Achnatherum hymenoides Shrubland
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accession code: VB.CC.34637.CEGL001046
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Western Ecology Working Group of... |
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This sagebrush shrubland association is known from the Gunnison River Valley and the Piceance Basin in western Colorado and the Columbia Basin in Oregon and Idaho, and possibly California. This shrubland association occurs on slopes and terraces above drainages and ridges. Sites are gentle to steep (4-100%) colluvial slopes and alluvial benches often on warmer southeast to southwest aspects between 1830 and 2710 m (6000-8900 feet) elevation. Substrates are variable but are typically moderately deep, well-drained soils with sandy clay loam, sandy loam and loam textures. The ground surface has high cover of large and small rocks, low to moderate cover of litter, and occasionally high cover of bare ground. The vegetation is characterized by an open to dense (10-75% cover) short-shrub canopy (to 1 m tall) dominated by <i>Artemisia tridentata ssp. wyomingensis</i>, with the bunchgrass <i>Achnatherum hymenoides</i> dominant in a patchy open herbaceous layer. Other shrub species present include <i>Artemisia frigida, Chrysothamnus viscidiflorus, Krascheninnikovia lanata, Purshia tridentata, Symphoricarpos oreophilus, Yucca harrimaniae</i>, and the succulent <i>Opuntia polyacantha</i>. The herbaceous layer is diverse and provides low to moderate cover. Associated graminoids include <i>Achnatherum pinetorum, Bouteloua gracilis, Elymus elymoides, Hesperostipa comata, Pascopyrum smithii, Pleuraphis jamesii, Poa fendleriana</i>, and introduced grasses <i>Bromus tectorum</i> and <i>Poa pratensis</i>. Forbs are variable, provide sparse cover, and include <i>Erigeron</i> spp., <i>Penstemon teucrioides, Phlox</i> spp., and <i>Sphaeralcea coccinea</i>. <i>Juniperus scopulorum</i> trees are occasionally present. |
Comm #11814
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Ipomoea pes-caprae - Cakile lanceolata Sparse Beach Vegetation
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accession code: urn:lsid:vegbank.org:commConcept:33194-{102258C3-38BA-49EF-BED1-4376E5113FB3}
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NatureServe Biotics 2019 |
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This type consists of perennial- and annual-dominated sand flats on upper ocean beaches, within the reach of storm tides and extreme lunar tides. Stands are dominated by <i>Ipomoea pes-caprae</i> and <i>Cakile lanceolata</i>. Other characteristic species include <i>Chamaesyce mesembrianthemifolia, Sporobolus virginicus, Paspalum vaginatum, Suaeda linearis</i>, and <i>Sesuvium portulacastrum</i>. In southeastern Florida this community also includes the trailing forbs <i>Okenia hypogaea</i> and <i>Alternanthera maritima</i>. It occurs in Florida from Brevard and Pinellas counties southward, and along the coasts of Cuba, the West Indies and Mexico. |
Comm #11815
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Purshia tridentata - Artemisia tridentata ssp. tridentata Shrubland
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accession code: VB.CC.32760.CEGL001054
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Western Ecology Working Group of... |
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This plant association is described from data collected in St. Anthony Dunes area, Fremont County, Idaho, within the Snake River Basalts ecoregional section. The plant association occurs in areas of stabilized sands, in a region of actively moving dunes. It is found extending windward at approximately 365 m from the actively moving dune edge. At these sites stable sand deposits are 150 years old or greater. Soils are deep, fine- to medium-grained sand. Despite very low moisture levels during the dry season, soil moisture available to plants is apparently adequate, perhaps due to the low soil moisture tension of sand. The plant association is composed of a dense shrub layer, generally less than 2 m in height, although individuals of all shrub species were occasionally taller. <i>Purshia tridentata</i> and <i>Artemisia tridentata ssp. tridentata</i> provide the most cover, but large clumps (>10 m in diameter) of <i>Prunus virginiana</i> occur patchily in some examples of the association. The understory herbaceous layer is diverse, but is strongly dominated by the perennial forb <i>Balsamorhiza sagittata</i> and the bunchgrass <i>Hesperostipa comata (= Stipa comata)</i>. |
Comm #11816
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Juniperus occidentalis / Cercocarpus ledifolius / Leymus cinereus Wooded Herbaceous Vegetation
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accession code: VB.CC.33544.CEGL001723
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Western Ecology Working Group of... |
0
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Comm #11817
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CEGL001759
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accession code: VB.CC.4316.CEGL001759
NOT CURRENTLY ACCEPTED
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EcoArt 2002 |
0
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Comm #11818
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Purshia tridentata / Artemisia frigida / Hesperostipa comata Shrubland
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accession code: VB.CC.32752.CEGL001055
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Western Ecology Working Group of... |
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This shrubland association is described from north-central Colorado, along the eastern slopes of the northern Front Range, on the Arapaho-Roosevelt National Forest. Best developed examples are in the Cache La Poudre River drainage in a narrowly restricted latitudinal range. Sites where this association is found are steep to very steep (30-55%) mountain slopes with southerly aspects from 1770-2350 m (5800-7700 feet) elevation and are too xeric to support coniferous woodland. Parent materials are colluvium of schist and gneiss origins which have developed into soils classified as Entisols. These soils are poorly developed, coarse-textured and rocky, with loamy and sandy textures. There is typically a shallow A horizon over a cambic B horizon over rocky C horizons. The soil surface is also moderately rocky. The broad-leaved, semi-evergreen shrub <i>Purshia tridentata</i> averages 30% cover in this shrubland association, with heights of 1-2 m. Other shrubs are poorly represented. <i>Artemisia frigida</i> is present in all stands, averaging 4% cover. The herbaceous layer is moderately dense to relatively sparse and dominated by the 0.5-m tall perennial bunchgrass <i>Hesperostipa comata (= Stipa comata)</i>. Other important species present in lesser amounts include perennial grasses <i>Bouteloua gracilis</i> and <i>Elymus albicans (= Elymus lanceolatus ssp. albicans)</i>, and the perennial forbs <i>Heterotheca villosa, Eriogonum umbellatum, Helianthus pumilus</i>, and <i>Scutellaria brittonii</i>. |
Comm #11819
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Cercocarpus montanus / Muhlenbergia pauciflora Shrubland
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accession code: VB.CC.33981.CEGL001089
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Western Ecology Working Group of... |
0
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This community occurs on limestone in the Guadalupe Mountains of Texas and New Mexico. <i>Cercocarpus montanus var. paucidentatus</i> is dominant. Other shrubs include <i>Quercus turbinella, Quercus grisea</i> (shrub form), <i>Dasylirion leiophyllum</i>, and <i>Ceanothus greggii</i>. <i>Muhlenbergia pauciflora, Muhlenbergia montana</i>, and <i>Muhlenbergia emersleyi</i> can be abundant. This community is probably actually mixed evergreen - cold-deciduous. |
Comm #11820
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Acer glabrum Drainage Bottom Shrubland
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accession code: VB.CC.34596.CEGL001062
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Western Ecology Working Group of... |
0
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This Rocky Mountain shrubland association occurs in major upland drainage bottoms in the mountains of Montana, Wyoming and Colorado at elevations of 1400 to 2620 m (4590-8600 feet) in the north extent and 2500 to 2620 m (8200-8600 feet) in the south. Sites are moderately sloping (10-20%) and typically found on the cooler north and east aspects. Substrates are relatively moist, gravelly soils. Vegetation is characterized by a relatively dense tall-shrub layer, dominated by the cold-deciduous shrub <i>Acer glabrum</i>, sometimes with abundant <i>Prunus virginiana</i> and occasional <i>Populus tremuloides</i> trees present. Scattered <i>Populus tremuloides</i> saplings, <i>Alnus incana, Betula occidentalis</i>, and <i>Salix bebbiana</i> may also be present in this layer. An open to moderately dense short-shrub layer is often present and composed of a variety of shrubs, such as <i>Artemisia frigida, Juniperus communis, Mahonia repens, Populus tremuloides</i> seedlings, <i>Philadelphus lewisii, Ribes</i> spp., <i>Rosa woodsii, Rubus</i> spp., <i>Symphoricarpos</i> spp., or <i>Sambucus racemosa</i>. The moderately dense to dense (50-90% cover) herbaceous layer may be dominated by either perennial forbs or grasses and is often diverse, with <i>Bromus hordeaceus (= Bromus mollis), Calamagrostis canadensis</i>, and mesic forbs such as <i>Heracleum</i> spp., <i>Maianthemum</i> spp., <i>Osmorhiza</i> spp., <i>Ranunculus uncinatus, Thalictrum fendleri, Galium aparine</i> and <i>Stellaria media</i> present. |
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