Name:
Pinus cembroides - Pinus discolor - Juniperus coahuilensis Woodland Group
Reference:
NatureServe Biotics 2019
Description:
This conifer evergreen woodland group is found in the Sierra Madre Occidentale and Sierra Madre Orientale in Mexico, Trans-Pecos Texas, southern New Mexico and Arizona, generally south of the Mogollon Rim. Vegetation is characterized by an open tree canopy dominated by pinyon and juniper trees 2-5 m tall. The presence of pinyons <i>Pinus cembroides, Pinus discolor, Pinus remota</i>, or <i>Pinus edulis</i> with Madrean elements in understory is diagnostic of this group. <i>Juniperus coahuilensis</i> and <i>Juniperus deppeana</i> are characteristic species that are often present to dominant. <i>Pinus edulis</i> and <i>Juniperus monosperma</i> may be the dominants in the northern distribution of the group but in combination with Madrean shrub and/or graminoid elements. <i>Pinus ponderosa</i> is absent or scattered. Understory layers are variable, ranging from sparse to dense grass or shrub layers. If Madrean oak trees are present, then they do not dominate the tree canopy. Common shrub species may include chaparral, desert scrub or lower montane shrubs such as <i>Arctostaphylos pungens, Canotia holacantha, Ceanothus greggii, Cercocarpus montanus, Quercus turbinella, Mimosa dysocarpa</i>, or <i>Rhus trilobata</i>. Perennial grasses such as <i>Bouteloua curtipendula, Bouteloua eriopoda, Bouteloua gracilis, Muhlenbergia emersleyi, Muhlenbergia pauciflora, Piptochaetium fimbriatum</i>, or <i>Piptochaetium pringlei</i> are present in many stands and may form an herbaceous layer. Stands occur on foothills, mountains and plateaus generally between 1460-2225 m in elevation. Substrates are variable, but soils are generally dry and rocky.
Accession Code:
urn:lsid:vegbank.org:commConcept:39998-{75E07D65-C0AA-4072-BDA0-1999D1B9A864}
Plot-observations of this Community Concept:
0
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