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Nassella cernua Grassland Alliance | NatureServe Biotics 2019
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Name: Nassella cernua Grassland Alliance
Reference: NatureServe Biotics 2019
Description: This native California bunchgrass alliance is dominated by <i>Nassella cernua</i>. Other graminoids present may include <i>Aristida ternipes, Elymus glaucus, Festuca californica, Koeleria macrantha, Leymus triticoides, Melica californica</i>, and <i>Poa secunda</i>. Stands typically include many exotic annuals, such as <i>Avena barbata, Avena fatua, Bromus diandrus, Bromus madritensis, Bromus hordeaceus</i>, and <i>Lolium perenne ssp. multiflorum</i>. Emergent trees and shrubs may be present, particularly the oak <i>Quercus douglasii</i>. Plant cover tends to be open. <i>Nassella cernua</i> tends to occur in drier areas than does <i>Nassella pulchra</i>. Stands appear more commonly in the transition between coastal/valley grasslands and inland/desert steppes. This once-extensive bunchgrass alliance of California's valleys and foothills occurs on deep soils with a high clay content. It does not occur above 1400 m of elevation. The native California bunchgrasses 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. 
Accession Code: urn:lsid:vegbank.org:commConcept:38185-{144E8F33-35B4-4377-8C6B-9A55401BA348}
Plot-observations of this Community Concept: 0
      Party Perspective according to: NatureServe (organization)
Perspective from: 18-Dec-2014 to: ongoing
      Names:   UID: ELEMENT_GLOBAL.2.899093 NatureServe ExplorerNatureServe Explorer logo
  Code: A1247
  Translated: Nodding Needlegrass Grassland Alliance
  Common: Californian Nodding Needlegrass Grassland
  Scientific: Nassella cernua Grassland Alliance
(convergence) and Synonyms:
(similar) A.1247
(similar) Nassella cernua Herbaceous Alliance