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Trichophorum cespitosum - Carex livida Fen | NatureServe Biotics 2019
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Name: Trichophorum cespitosum - Carex livida Fen
Reference: NatureServe Biotics 2019
Description: This type is only known to occur in the Sawtooth Valley, Idaho. This is an herbaceous association, characterized by open turfy mats of the perennial sedges <i>Trichophorum cespitosum</i> and <i>Carex livida</i>. These two graminoids are typically codominant and intermingled, but in some cases may be in distinct patches. Cover of these 2 species together is usually over 50%. Other herbaceous species commonly present include perennial forbs, such as <i>Swertia perennis, Gentiana calycosa, Packera streptanthifolia, Ligusticum tenuifolium, Spiranthes romanzoffiana</i>, and <i>Pedicularis groenlandica</i>. The forbs may be confined to small hummocks within the graminoid matrix. Other graminoids occasionally present include <i>Carex muricata</i> and <i>Carex aquatilis</i>. Mosses, especially <i>Sphagnum</i> spp., are prevalent on the surface. Small hummocks within the herbaceous matrix support stunted individuals of the low, broad-leaved deciduous shrubs <i>Vaccinium uliginosum</i> and <i>Lonicera caerulea</i>, as well as seedlings of the conifer <i>Pinus contorta</i>. This association occurs on valley bottoms and toeslopes of valley sides in a glaciated mountainous region. The valleys are flanked by rugged mountains of primarily granitic origins and have been modified by glacial activity. Valley floors are generally wide, with gentle gradients in the lower reaches, while middle reaches are somewhat narrower or U-shaped. Glacial and alluvial deposits comprise the valley floors. The association is found from 2070 to 2240 m (6790-7350 feet) elevation, in lower and middle reaches of tributaries. It is associated with valley bottoms greater than 100 m wide. The soils are typically composed of organic materials, in some cases over saturated mineral layers, with large rocks protruding as shrub-covered hummocks. The wettest sites are organic mats floating on water or muck. 
Accession Code: urn:lsid:vegbank.org:commConcept:30751-{4C93A985-768F-4314-934E-B925B10D8A58}
Plot-observations of this Community Concept: 0
      Party Perspective according to: NatureServe (organization)
Perspective from: 16-Nov-1993 to: ongoing
      Names:   UID: ELEMENT_GLOBAL.2.689976 NatureServe ExplorerNatureServe Explorer logo
  Code: CEGL001842
  Translated: Tufted Bulrush - Livid Sedge Fen
  Scientific: Trichophorum cespitosum - Carex livida Fen
(convergence) and Synonyms:
(similar) Trichophorum caespitosum - Carex livida Herbaceous Vegetation
(similar) CEGL001842
(similar) Trichophorum caespitosum - Carex livida Herbaceous Vegetation