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Name
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Reference
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Plots↓
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Description |
Comm #11251
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Artemisia tridentata ssp. wyomingensis / Pseudoroegneria spicata Shrub Herbaceous Vegetation
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accession code: VB.CC.34081.CEGL001535
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Western Ecology Working Group of... |
0
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This bunchgrass vegetation type with an open Wyoming big sagebrush shrub layer occurs in Montana, Wyoming, Colorado, Idaho, Washington, Oregon (apparently), Nevada, and British Columbia, Canada. It probably also occurs in western North Dakota and Utah, and it may occur in South Dakota. Stands occur on moderate to steep slopes at low to mid elevations, and on a variety of soils. Throughout the range of this association, the vegetation consists of an open to moderately dense shrub layer (about 10-25% canopy cover) dominated by <i>Artemisia tridentata ssp. wyomingensis</i>, and a herbaceous layer dominated by <i>Pseudoroegneria spicata</i> with lesser amounts of <i>Poa secunda</i> (sometimes a codominant grass). From the Great Plains westward to eastern Idaho and south to Colorado, the sagebrush seldom exceeds 0.5 m in height, but in western Idaho and Washington, the shrubs typically are 1 m tall. Other shrubs (especially <i>Chrysothamnus</i> sp.) and herbaceous species (especially <i>Hesperostipa comata (= Stipa comata)</i>) usually are present. <i>Festuca idahoensis</i> is absent or present in small amounts. The stands in the eastern half of the geographic range often contain small amounts of <i>Gutierrezia sarothrae, Artemisia frigida, Sphaeralcea coccinea, Phlox hoodii, Koeleria macrantha</i>, and <i>Opuntia polyacantha</i>. Less constant species are <i>Bouteloua</i> spp. (especially <i>Bouteloua gracilis), Carex filifolia</i>, and <i>Pascopyrum smithii</i>. Missing from these stands is <i>Achnatherum thurberianum (= Stipa thurberiana)</i>. In the western half of the geographic range, the vegetation generally lacks the associated species listed above and often contains <i>Antennaria dimorpha</i> and <i>Achnatherum thurberianum</i>. In addition, the stands in Washington often contain large amounts of crustose lichens as ground cover. |
Comm #11252
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CEGL002111
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accession code: VB.CC.4646.CEGL002111
NOT CURRENTLY ACCEPTED
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EcoArt 2002 |
0
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Comm #11253
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CEGL007634
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accession code: VB.CC.7246.CEGL007634
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EcoArt 2002 |
0
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Comm #11254
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CEGL007635
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accession code: VB.CC.7247.CEGL007635
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EcoArt 2002 |
0
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Comm #11255
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CEGL002726
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accession code: VB.CC.5118.CEGL002726
NOT CURRENTLY ACCEPTED
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EcoArt 2002 |
0
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Comm #11256
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CEGL004996
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accession code: VB.CC.6397.CEGL004996
NOT CURRENTLY ACCEPTED
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EcoArt 2002 |
0
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Comm #11257
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A.2579
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accession code: VB.CC.1846.A2579
NOT CURRENTLY ACCEPTED
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EcoArt 2002 |
0
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Comm #11258
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Artemisia cana (ssp. bolanderi, ssp. viscidula) / Poa secunda Shrubland
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accession code: VB.CC.34018.CEGL001548
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Western Ecology Working Group of... |
0
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<i>Artemisia cana</i> is usually the only shrub, but <i>Ericameria nauseosa (= Chrysothamnus nauseosus)</i> occasionally occurs. <i>Poa secunda</i> (usually in the formerly recognized, large, <i>Poa secunda ssp. nevadensis</i> form) is the most common herbaceous species. Other common understory species include <i>Lupinus argenteus, Elymus elymoides, Trifolium gymnocarpon, Astragalus lentiginosus, Eleocharis macrostachya, Distichlis spicata (= Distichlis stricta), Polyctenium fremontii</i>, and <i>Camissonia tanacetifolia (= Oenothera tanacetifolia)</i>. This association is found in northern Great Basin playas in sites that are flooded for several months during the winter and early spring but which rapidly dry up as the weather warms. Soils are saline. In more saline soils at slightly lower elevations on the playa, <i>Artemisia cana / Eleocharis macrostachya</i> and <i>Eleocharis macrostachya</i> associations occur. These sites remain flooded for a longer period of time than the <i>Artemisia cana / Poa secunda</i> sites. Playa centers are often the monotypic <i>Camissonia tanacetifolia</i> association, which remains flooded for longer than the other associations and have more saline soils. At higher elevations, <i>Artemisia cana</i> playas usually find <i>Poa fendleriana</i> replacing <i>Poa secunda</i> as the dominant grass. |
Comm #11259
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CEGL001931
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accession code: VB.CC.4485.CEGL001931
NOT CURRENTLY ACCEPTED
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EcoArt 2002 |
0
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Comm #11260
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CEGL001932
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accession code: VB.CC.4486.CEGL001932
NOT CURRENTLY ACCEPTED
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EcoArt 2002 |
0
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