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Eragrostis lehmanniana Ruderal Grassland | NatureServe Biotics 2019
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Name: Eragrostis lehmanniana Ruderal Grassland Reference: NatureServe Biotics 2019 Description: This desert grassland association occurs in southeastern Arizona on alluvial fans, ridges, hills and valley floors. The elevation range is 960-1100 m (3150-3600 feet). Sites occur on gentle to moderate slopes. Substrates are variable but are often well-drained sandy loam. This semi-natural grassland is characterized by dominance or codominance of <i>Eragrostis lehmanniana</i>, an introduced, perennial forage grass seeded and now naturalized throughout much of southern Arizona. Natural mixed desert grasslands are noted for their high species diversity and range in cover from relatively sparse to dense. This association is also variable in composition and cover and is defined by having 25% or more cover of <i>Eragrostis lehmanniana</i> or over a third of the total perennial graminoid cover for stands with a sparser herbaceous layer. <i>Eragrostis lehmanniana</i> also strongly dominates many stands with few native species remaining. Shrubs such as <i>Prosopis velutina, Calliandra eriophylla, Cylindropuntia versicolor</i>, and <i>Isocoma tenuisecta</i> may be present totaling 10% cover or less. Remnant desert grasses include <i>Aristida ternipes, Bouteloua chondrosioides, Bouteloua curtipendula, Bouteloua eriopoda, Bouteloua rothrockii, Digitaria californica</i>, and <i>Eragrostis intermedia</i>. <i>Gutierrezia microcephala</i> is abundant in some stands. Other common species include <i>Allionia incarnata, Ambrosia confertiflora, Boerhavia erecta, Mollugo verticillata, Panicum hirticaule, Polygala barbeyana, Proboscidea parviflora</i>, and <i>Phemeranthus aurantiacus</i>.  Accession Code: urn:lsid:vegbank.org:commConcept:34095-{2B4D4698-0723-4DC4-9A51-E3E578E5EF92} Plot-observations of this Community Concept: 0
	Party Perspective according to: NatureServe (organization) Perspective from: 21-Aug-2007 to: ongoing
	status: accepted Community's Parent: Eragrostis lehmanniana - Eragrostis curvula Ruderal Desert Grassland Alliance This Community's Level: Association This Community's Children: [none]		Names:   UID: ELEMENT_GLOBAL.2.806343 NatureServe Explorer   Code: CEGL005332   Translated: Lehmann's Lovegrass Ruderal Grassland   Scientific: Eragrostis lehmanniana Ruderal Grassland (convergence) and Synonyms: (similar) Eragrostis lehmanniana Ruderal Herbaceous Vegetation