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Nassella pulchra Herbaceous Alliance | Western Ecology Working Group of...
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Name: Nassella pulchra Herbaceous Alliance Reference: Western Ecology Working Group of... Description: This once-extensive bunchgrass alliance grows from California's valleys and foothills south into Baja California, Mexico. It grows on deep soils with a high clay content. Stands can occur on all topographic positions, but due to climatic factors, they do not occur over 1300 m of elevation. The native California bunch grasses are adapted to a Mediterranean climate with moist, cool winters and long, dry summers. Precipitation varies from 25-70 cm per year, and falls mostly between November and April. This temperate or subpolar, medium-tall bunch grassland forms an open canopy less than 1 m in height, and is dominated by Nassella pulchra. Other graminoids present may include Elymus glaucus, Festuca californica, Melica californica, Nassella lepida, Nassella cernua, Melica imperfecta, Koeleria macrantha, and Poa secunda. Many exotic annuals, such as Bromus diandrus, Bromus madritensis, Bromus hordeaceus, Avena barbata, Avena fatua, and Lolium perenne ssp. multiflorum (= Lolium multiflorum), have invaded stands of this alliance. Emergent trees and shrubs may be present. Plant cover tends to be open.  Accession Code: VB.CC.20307.NASSELLAPULCHRA 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: Nassella pulchra Herbaceous Alliance   Translated: Purple Needlegrass Herbaceous Alliance   UID: HIGHER_CLASS_UNIT.2.125794 NatureServe Explorer   Code: A.1289