Name:
Festuca idahoensis ssp. roemeri - Festuca saximontana Alpine Meadow Alliance
Reference:
NatureServe Biotics 2019
Description:
Vegetation is characterized by a dense cover (>100%) and a diverse flora of herbaceous and cryptogam species; 35 species is the average number per stand. The alliance is characterized by xeric graminoids combined with a diverse flora of herbaceous and cryptogram species often occurring as a "turf" of sod-forming sedges or grasses, dominated by one or more, and often an intermixed combination of, species. These are often expressed with one or two having higher cover than the rest, but with usually at least three of the following species present: <i>Calamagrostis purpurascens, Carex breweri, Carex capitata, Carex nardina, Carex scirpoidea ssp. pseudoscirpoidea, Carex phaeocephala, Carex proposita, Festuca saximontana, Festuca brachyphylla</i>, and/or <i>Festuca idahoensis ssp. roemeri</i>. A variety of other alpine forbs are also typically present such as <i>Lupinus arcticus ssp. subalpinus, Lupinus latifolius, Lupinus sellulus var. lobbii, Minuartia obtusiloba, Oreostemma alpigenum, Selaginella wallacei, Sibbaldia procumbens, Silene parryi, Smelowskia ovalis, Solidago multiradiata</i>, and <i>Trisetum spicatum</i>. This alliance is found in the subalpine and alpine zones of the high mountains of the Pacific Coast and Cascade Range of Washington and British Columbia, and south into the Sierra Nevada of California. Stands occur between 1700 and 2600 m elevation on all aspects of dry, well-drained moderate, gentle to steep upper slopes. Some sites can be slightly more mesic. Sites may have exposed rocks and mineral soil. A few stands can occur at lower elevations, on exposed grassy bald ridges well below treeline.
Accession Code:
urn:lsid:vegbank.org:commConcept:38624-{D681320B-7F6B-49AF-9105-E5485C7251C6}
Plot-observations of this Community Concept:
0
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