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Poa fendleriana Herbaceous Alliance | Western Ecology Working Group of...
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Name: Poa fendleriana Herbaceous Alliance Reference: Western Ecology Working Group of... Description: These grasslands have been described from basins and drainages east of the Cascades in central Oregon. Elevations range from 1280-1830 m. Stands occur in floodplains and terraces along low-gradient streams. Sites are flat to gently sloping. Stands in the bottomlands may be seasonally flooded during the winter. Upland stands in pumice-mantled basin meadows are not flooded except during abnormally wet years. Water tables are a meter below ground by midsummer and are very deep by late summer. Soils are moderately deep alluviums. Soil textures range from sandy loam to silty loam. Soil parent material is pumice. Vegetation included in this grassland alliance has a moderately dense to dense (60 to more than 80% cover) herbaceous layer about 0.5 m tall. Stands are dominated by the midgrass Poa fendleriana ssp. fendleriana with several other graminoids, including Carex athrostachya, Carex filifolia, Carex praegracilis, Elymus caninus, Koeleria macrantha, and Muhlenbergia richardsonis. Forb cover is relatively sparse (usually less 25%) and consists of Achillea millefolium and Symphyotrichum campestre var. bloomeri (= Aster campestris var. bloomeri). Adjacent stands include upland coniferous forests dominated by Pinus contorta and various wetlands dominated by herbaceous and shrub species of Carex and Salix.  Accession Code: VB.CC.22299.POAFENDLERIANAH Plot-observations of this Community Concept: 0
	Party Perspective according to: NatureServe (organization) Perspective from: 26-Nov-1997 to: 01-May-2019
	status: accepted This Community's Level: Alliance This Community's Children: [none]		Names:   Scientific: Poa fendleriana Herbaceous Alliance   Translated: Muttongrass Herbaceous Alliance   UID: HIGHER_CLASS_UNIT.2.125870 NatureServe Explorer   Code: A.1263