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Puccinellia lemmonii - Poa secunda Seasonally Flooded Herbaceous Vegetation | Western Ecology Working Group of...
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Name: Puccinellia lemmonii - Poa secunda Seasonally Flooded Herbaceous Vegetation Reference: Western Ecology Working Group of... Description: This is a valley bottom, semi-alkaline grassland known from the Klamath Basin in south-central Oregon, and from the Baker Valley in northeastern Oregon. As a valley bottom type, it is always found on flat, deep soil areas, usually of alluvial or pluvial origin, between 760-1220 m (2500-4000 feet) in elevation. It usually occurs along the edges of lakes, backwater oxbows or large wetlands, in valleys that have moderately alkaline soils. <i>Puccinellia lemmonii</i> and <i>Poa secunda (= ssp. juncifolia</i> and = <i>ssp. nevadensis</i>) dominate these grasslands. <i>Hordeum jubatum</i> is often present, and occasionally codominant, along with <i>Elymus elymoides</i> and <i>Juncus</i> species. Forbs (<i>Castilleja pilosa, Erigeron filifolius, Astragalus purshii, Astragalus applegatei</i>) and bare ground provide a significant part of the overall cover. In addition, all known sites had some (between 1-5%) cover of <i>Ericameria nauseosa (= Chrysothamnus nauseosus)</i>, although this is assumed to be an artifact of historic grazing. At the wetter end, this type grades into <i>Deschampsia caespitosa</i> or <i>Carex</i> wetlands, and at the drier end into playa, or more commonly sagebrush habitats.  Accession Code: VB.CC.31182.CEGL001658 Plot-observations of this Community Concept: 0
	Party Perspective according to: NatureServe (organization) Perspective from: 17-Nov-2014 to: 01-May-2019
	status: accepted This Community's Level: association This Community's Children: [none]		Names:   UID: ELEMENT_GLOBAL.2.684148 NatureServe Explorer   Translated: Lemmon's Alkali Grass - Sandberg Bluegrass Seasonally Flooded Herbaceous Vegetation   Scientific: Puccinellia lemmonii - Poa secunda Seasonally Flooded Herbaceous Vegetation   Code: CEGL001658