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Carex (lachenalii, capillaris, illota) Seasonally Flooded Herbaceous Alliance | Western Ecology Working Group of...
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Name: Carex (lachenalii, capillaris, illota) Seasonally Flooded Herbaceous Alliance Reference: Western Ecology Working Group of... Description: Vegetation types within this alliance range from upper montane to the alpine belts in the mountains. Elevation ranges from 2300-3600 m. Occurrences are restricted to flooded marsh or lake margins, swamps, wet meadows, around frost boils and on hummocks. The sites are typically flat or slightly inclined, mesic to saturated, snow-covered in winter, and cool to cold in the summer. Surface water is present for extended periods during the growing season, but is absent by the end of the growing season in most years. Soils from stands in Colorado are loess, with accumulations of organic matter. The average pH of the surface horizon is 5.2. The pH increases with depth; clay and organic matter, moisture retention capacity and available water decrease sharply with depth. Vegetation types within this alliance are classified as seasonally flooded subpolar grasslands. They are dominated by Carex lachenalii (= Carex bipartita), Carex capillaris, and Carex illota with at least 60% cover. Other graminoids can include Juncus biglumis, Juncus triglumis, and Carex misandra. The forb stratum, when present, is dominated by Polygonum viviparum. Other forbs can include Geum rossii (= Acomastylis rossii), Lloydia serotina, and Gentiana algida. The moss layer can be equally important in some stands in Colorado. Species include Cladonia pyxidata, Paraleucobryum enerve, and Tortella arctica. Information on adjacent vegetation is unavailable.  Accession Code: VB.CC.20849.CAREXLACHENALII 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: Carex (lachenalii, capillaris, illota) Seasonally Flooded Herbaceous Alliance   Translated: (Arctic Harefoot Sedge, Hair Sedge, Small-head Sedge) Seasonally Flooded Herbaceous Alliance   UID: HIGHER_CLASS_UNIT.2.124718 NatureServe Explorer   Code: A.1424