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Carex aquatilis var. dives Seasonally Flooded Herbaceous Alliance | Western Ecology Working Group of...
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Name: Carex aquatilis var. dives Seasonally Flooded Herbaceous Alliance Reference: Western Ecology Working Group of... Description: Stands included in this alliance have been described from montane wetlands in forests on the west side of the Cascade Mountains in Oregon. Elevations range from 850-1590 m within a maritime climate. This vegetation is found in glacial cirques and valleys, often along streams, below seeps, and especially on the edge of beaver ponds. Substrates are moderately deep (50-90 cm), silt or silty clay loam textured soils with a deep organic horizon (20-50 cm). Parent materials are alluvium or volcanic pumice deposits. These wetlands have a high water table and are seasonally flooded during much of the growing season. Vegetation included in this alliance has a dense herbaceous layer dominated by the perennial graminoid Carex aquatilis var. dives (50% cover) with Carex vesicaria often codominating. Many other wet-site graminoids occur, such as Scirpus microcarpus, Agrostis humilis (= Agrostis thurberiana), Calamagrostis canadensis, Glyceria grandis, and 13 other species of Carex. The most common forbs are Mimulus alsinoides, Hypericum scouleri (= Hypericum formosum), and Pedicularis groenlandica. Other associated forbs may include Caltha leptosepala ssp. howellii (= Caltha biflora), Hypericum anagalloides, Cicuta douglasii, and the ferns Athyrium filix-femina and Dryopteris campyloptera (= Dryopteris austriaca). Scattered deciduous and evergreen shrubs may also be present, such as Salix lucida ssp. lasiandra (= Salix lasiandra), Spiraea douglasii, and Vaccinium uliginosum. Adjacent stands include montane forests and riparian communities.  Accession Code: VB.CC.19603.CAREXAQUATILISV 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 aquatilis var. dives Seasonally Flooded Herbaceous Alliance   UID: HIGHER_CLASS_UNIT.2.124887 NatureServe Explorer   Translated: Sitka Sedge Seasonally Flooded Herbaceous Alliance   Code: A.1412