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Juncus drummondii Herbaceous Alliance | Western Ecology Working Group of...
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Name: Juncus drummondii Herbaceous Alliance Reference: Western Ecology Working Group of... Description: Plant associations within this alliance are found at upper elevations in the Rocky Mountains. Elevations range from 2520-3420 m. In alpine areas they occur on solifluction terraces where soil moisture is abundant. In the lower elevations associations are found in meadows, wooded slopes, and adjacent to streams. The Juncus drummondii association was found on rocky, inclined (2-10% slope), southeast-oriented sites which are subxeric to mesic. Snow cover typically occurs for 8.5-9.5 months. The parent material in the Front Range is metamorphic. Soils are skeletal with coarse fragments. Average pH is acidic, 4.9. The soil becomes dry and hard by fall if no summer precipitation occurs. Plant associations within this alliance are classified as short alpine or subalpine, dry bunch grasslands. Juncus drummondii dominates the graminoid stratum. Other graminoids typically include Carex nigricans, Carex pyrenaica in the alpine stands, or Hordeum brachyantherum, Deschampsia caespitosa, and Muhlenbergia richardsonis in the lower elevations. The forb layer typically is codominant and can include Antennaria lanata, Erigeron melanocephalus, Caltha leptosepala, Sibbaldia procumbens, Antennaria alpina, and Epilobium anagallidifolium. Typical forbs from lower elevations include Iris missouriensis and Machaeranthera bigelovii (= Aster rubrotinctus). Polytrichum piliferum can dominate the moss layer in the more xeric stands. Adjacent community information was not available.  Accession Code: VB.CC.21071.JUNCUSDRUMMONDI Plot-observations of this Community Concept: 0
	Party Perspective according to: NatureServe (organization) Perspective from: 26-Nov-1997 to: 01-May-2019
	status: accepted This Community's Level: Alliance This Community's Children: [none]		Names:   Scientific: Juncus drummondii Herbaceous Alliance   Translated: Drummond's Rush Herbaceous Alliance   UID: HIGHER_CLASS_UNIT.2.125179 NatureServe Explorer   Code: A.1324