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Abies concolor - Pseudotsuga menziesii / Lathyrus lanszwertii var. leucanthus Forest | Western Ecology Working Group of...
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Name: Abies concolor - Pseudotsuga menziesii / Lathyrus lanszwertii var. leucanthus Forest Reference: Western Ecology Working Group of... Description: These coniferous forests have been described from the mountains of northern Arizona and northern New Mexico at elevations of 2591-2866 m. The association is found mainly on northern slopes. Soils are constantly moist and may be derived from various substrates, mainly volcanics. The evergreen needle-leaved tree canopy is dominated by either or both Abies concolor and Pseudotsuga menziesii. Populus tremuloides is important in disturbed stands and may have up to 15% canopy cover. Both Pinus flexilis and Pinus ponderosa may be present in younger stands. The shrub layer is generally sparse but may have up to 25% canopy cover composed of Mahonia repens with lesser amounts of Symphoricarpos oreophilus, Lonicera arizonica, Juniperus communis, and Paxistima myrsinites. The herbaceous layer cover is variable (5-50%). Lathyrus lanszwertii var. leucanthus (= Lathyrus lanszwertii var. arizonicus) dominates the herb layer with cover up to 20%. Other species include Maianthemum stellatum, Prosartes trachycarpa (= Disporum trachycarpum), Thalictrum fendleri, Poa fendleriana, Carex siccata (= Carex foenea), Carex geyeri, Ligusticum porteri, and Thermopsis divaricarpa (= Thermopsis pinetorum). Because of the abundance of Populus tremuloides, fire may be necessary to maintain this association. Older stands are characterized by increased coverage of the shade-tolerant, fire-susceptible Abies concolor. This association can be distinguished from other mesic Abies concolor - Pseudotsuga menziesii forests by the dominance of Lathyrus lanszwertii var. leucanthus in the herbaceous layer.  Accession Code: VB.CC.20694.ABIESCONCOLORPS 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: Abies concolor Forest Alliance This Community's Level: Association This Community's Children: [none]		Names:   Translated: White Fir - Douglas-fir / Nevada Peavine Forest   UID: ELEMENT_GLOBAL.2.685857 NatureServe Explorer   Code: CEGL000250   Scientific: Abies concolor - Pseudotsuga menziesii / Lathyrus lanszwertii var. leucanthus Forest (convergence) and Synonyms: (undetermined) Abies concolor - Pseudotsuga menziesii / Lathyrus lanszwertii var. leucanthus Forest