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A.1650 | EcoArt 2002
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Name: A.1650
Reference: EcoArt 2002
Description: This alliance occurs on somewhat xeric alpine sites in the mountains of the Pacific Northwest, between 1800 and 2400 m in elevation. These communities typically occur at sites where snowmelt occurs early and plants are exposed to frequent freezing and thawing in the spring. Frost heaving is common and may result in striped patterns of bare substrate and vegetation perpendicular to the mountain slopes. Soils are typically skeletal and excessively drained. These communities are dominated by ~Phlox diffusa$, which forms scattered mats of vegetation less than 20 cm high. Associated species include other mat-formers such as ~Arenaria capillaris, Eriogonum pyrolifolium, Douglasia laevigata$, and ~Paxistima myrsinites$. ~Paxistima$ is a taller shrub at lower altitudes, but is a prostrate dwarf-shrub in these habitats. Other herbaceous species include ~Arabis cobrensis, Collinsia parviflora, Carex spectabilis, Penstemon procerus, Erigeron aureus, Lupinus lepidus$, and ~Antennaria alpina$. 
Accession Code: VB.CC.1406.A1650
Plot-observations of this Community Concept: 0
      Party Perspective according to: NatureServe (organization)
Perspective from: 26-Nov-1997 to: 17-Mar-2005
     
  • status: accepted
  • Community's Parent: V.B.2.N.b
  • This Community's Level: Alliance
  • This Community's Children: [none]
Names:   Scientific: PHLOX DIFFUSA HERBACEOUS ALLIANCE
  Code: A.1650
  Common: Spreading Phlox Herbaceous Alliance
(convergence) and Synonyms:
(undetermined) Phlox diffusa Herbaceous Alliance