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Pinus discolor / Piptochaetium fimbriatum Woodland | NatureServe Biotics 2019
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Name: Pinus discolor / Piptochaetium fimbriatum Woodland Reference: NatureServe Biotics 2019 Description: This Madrean conifer woodland occurs in the "Borderlands" of southeastern Arizona, southwestern New Mexico and extends into central New Mexico and probably adjacent Texas and northern Mexico. Stands are naturally small and patchy in distribution, and limited to moist microsites of canyons or cooler open slopes. It occupies alluvial slopes and benches, upper slopes, drainages and washes, often with cooler northern aspects. Elevation is roughly 1680-2100 m. Sampled stands in the Animas Mountains are on 12%, northwest-facing slopes. The substrate is loam derived from andesite with surface rock and gravel, together averaging 15% cover. Litter dominates the ground cover (72%). The tree canopy has 25-60% cover and is codominated by <i>Pinus discolor</i> and <i>Juniperus deppeana</i> with <i>Quercus grisea</i> or <i>Quercus x organensis [arizonica x grisea]</i> hybrid typically present. Scattered shrubs (&lt;10% cover) are common, often with high diversity, and may include <i>Nolina microcarpa, Rhus trilobata, Cercocarpus montanus, Yucca baccata, Garrya wrightii, Quercus toumeyi</i>, and <i>Fendlera rupicola</i>. The moderately dense herbaceous layer (25-45% cover) is dominated by perennial grasses, such as <i>Piptochaetium fimbriatum, Bouteloua gracilis, Bouteloua curtipendula</i>, or <i>Eragrostis intermedia</i>, but is typically diverse and includes sparse cover of many other grass and forb species. The perennial grass-dominated herbaceous layer is diagnostic of this late successional <i>Pinus discolor / Juniperus deppeana</i> woodland.  Accession Code: urn:lsid:vegbank.org:commConcept:29677-{6EE30797-834F-45AB-9A08-F16ED32DEC9F} Plot-observations of this Community Concept: 0
	Party Perspective according to: NatureServe (organization) Perspective from: 17-Oct-2018 to: ongoing
	status: accepted Community's Parent: Pinus cembroides - Pinus discolor - Pinus edulis / Grass Understory Woodland Alliance This Community's Level: Association This Community's Children: [none]		Names:   UID: ELEMENT_GLOBAL.2.685038 NatureServe Explorer   Code: CEGL000768   Translated: Border Pinyon / Pinyon Speargrass Woodland   Common: Madrean Woodland   Scientific: Pinus discolor / Piptochaetium fimbriatum Woodland (convergence) and Synonyms: (similar) Pinus discolor / Piptochaetium fimbriatum Woodland (similar) Pinus discolor / Piptochaetium fimbriatum Woodland (similar) CEGL000768