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Pinus discolor / Quercus toumeyi Woodland | Western Ecology Working Group of...
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Name: Pinus discolor / Quercus toumeyi Woodland Reference: Western Ecology Working Group of... Description: This Madrean conifer woodland occurs in the 'Borderlands' in southeastern Arizona and extreme southwestern New Mexico (Animas and Peloncillo mountains) and likely occurs in adjacent northern Mexico. Stands are small and patchy in distribution and limited to mountain and foothill slopes at elevations of 1800-1860 m, and are often found within a matrix of Quercus toumeyi chaparral. Soils are derived from rhyolite parent material. This late-successional woodland association has an open to moderately dense tree canopy (20-80% cover) codominated by the evergreen trees Pinus discolor and Juniperus deppeana, with occasional Juniperus coahuilensis (= Juniperus erythrocarpa), Juniperus monosperma, Quercus arizonica, or Quercus emoryi present. The moderately dense to dense shrub layer (>25% cover) is dominated by the broad-leaved evergreen oaks Quercus toumeyi, Quercus toumeyi X grisea hybrid, and includes many other shrub species such as Arctostaphylos pungens, Garrya wrightii, Nolina microcarpa, Agave palmeri, Rhus trilobata, Rhus virens, and Dasylirion wheeleri. The herbaceous layer is generally sparse and dominated by perennial grasses with scattered forbs. Species include Schizachyrium cirratum, Aristida schiedeana var. orcuttiana (= Aristida orcuttiana), Bouteloua curtipendula, Muhlenbergia emersleyi, Eragrostis intermedia, Bouteloua gracilis, Piptochaetium fimbriatum, Phaseolus spp., and Desmodium spp. The dominance of Quercus toumeyi in the shrub layer is diagnostic of this Pinus discolor woodland type.  Accession Code: VB.CC.26392.PINUSDISCOLORQU Plot-observations of this Community Concept: 0
	Party Perspective according to: NatureServe (organization) Perspective from: 26-Nov-1997 to: 17-Nov-2014
	status: accepted Community's Parent: Pinus discolor Woodland Alliance This Community's Level: Association This Community's Children: [none]		Names:   Translated: Border Pinyon / Toumey Oak Woodland   UID: ELEMENT_GLOBAL.2.689547 NatureServe Explorer   Scientific: Pinus discolor / Quercus toumeyi Woodland   Common: Madrean Conifer Woodland   Code: CEGL000773 (convergence) and Synonyms: (undetermined) Pinus discolor / Quercus toumeyi Woodland