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Quercus toumeyi / Muhlenbergia emersleyi Scrub | NatureServe Biotics 2019
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Name: Quercus toumeyi / Muhlenbergia emersleyi Scrub Reference: NatureServe Biotics 2019 Description: This shrubland occurs in the "Borderlands" of southwestern New Mexico and likely extends into southeastern Arizona and the very northern Sierra Madre Occidentale in Mexico. Stands occur in the foothills zone of isolated desert mountain ranges. Elevation ranges from 1500-1600 m. Stands are small and are described from a rocky knoll in a narrow valley bottom and on a moderately steep (35%), rocky slope in the Animas Mountains. Aspects are variable (north-northeast and south). Soils are gravelly loams derived from rhyolite, with high amounts of surface gravel and rocks (40-90% cover). This association has a moderately sparse (20% cover) tall-shrub layer (2-5 m) with a sparse herbaceous layer (&lt;15% cover). The shrub layer is dominated by the broad-leaved evergreen oaks <i>Quercus toumeyi</i> and <i>Quercus arizonica</i>, which occasionally reach small tree size. Several other shrubs may be present, particularly succulents such as <i>Nolina microcarpa, Dasylirion wheeleri, Cylindropuntia imbricata, Yucca elata</i>, and <i>Agave palmeri</i>. The sparse herbaceous layer is dominated by perennial grasses. The most abundant species are <i>Muhlenbergia emersleyi, Bouteloua curtipendula</i>, and <i>Schizachyrium cirratum</i>. The diversity of graminoid and forb species is high (&gt;20 species), but most have cover less than 1%. The diagnostic characteristics of this evergreen shrubland is the dominance of <i>Quercus toumeyi</i> with <i>Muhlenbergia emersleyi</i> present in the herbaceous layer. Both <i>Quercus toumeyi</i> and <i>Muhlenbergia emersleyi</i> commonly occur on rocky slopes.  Accession Code: urn:lsid:vegbank.org:commConcept:29885-{EFEC6903-B5A0-418E-ABD2-7FC1D135F83A} Plot-observations of this Community Concept: 0
	Party Perspective according to: NatureServe (organization) Perspective from: 09-May-1993 to: ongoing
	status: accepted Community's Parent: Quercus arizonica - Quercus emoryi - Quercus grisea Scrub Woodland Alliance This Community's Level: Association This Community's Children: [none]		Names:   UID: ELEMENT_GLOBAL.2.685157 NatureServe Explorer   Code: CEGL000976   Translated: Toumey Oak / Bullgrass Scrub   Scientific: Quercus toumeyi / Muhlenbergia emersleyi Scrub (convergence) and Synonyms: (similar) CEGL000976 (similar) Quercus toumeyi / Muhlenbergia emersleyi Scrub (similar) Quercus toumeyi / Muhlenbergia emersleyi Shrubland