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Minuartia obtusiloba - Lupinus sellulus Cascade Alpine Fell-field Alliance | NatureServe Biotics 2019
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Name: Minuartia obtusiloba - Lupinus sellulus Cascade Alpine Fell-field Alliance Reference: NatureServe Biotics 2019 Description: Stands have a sparse herbaceous layer dominated by the perennial forbs <i>Erigeron aureus, Lupinus sellulus var. lobbii</i>, or <i>Minuartia obtusiloba</i> and the sedges <i>Carex breweri</i> and <i>Carex phaeocephala</i>, in various combinations. Although plant cover is low, species richness is high, especially with cushion plants such as <i>Phlox</i> spp. and <i>Silene acaulis</i>. Other frequent species include <i>Draba lonchocarpa, Festuca brachyphylla, Festuca saximontana, Luzula spicata, Penstemon davidsonii, Penstemon procerus, Phlox diffusa, Poa lettermanii, Polemonium elegans, Smelowskia ovalis, Solidago simplex var. spathulata</i>, and <i>Solidago simplex var. nana</i>. Stands included in this alliance have been described from windswept alpine and harsh exposed subalpine areas in the Washington Cascade Range. Elevations range from 1950-2500 m. Sites are very dry fell-fields with large and small exposed rocks. Winter snow cover is generally low because high winds remove it. This vegetation grows between exposed rocks in depressions to gentle slopes. Aspects are southeast- and west-facing, on flat to gentle slopes. Cushion plants are favored because of extreme desiccating conditions. There is significant frost action in the soils that causes stones to be pushed to the surface forming stone stripes and other disturbance such as soil boils. There is little soil material. Parent material is typically andesite on Mount Rainier. Adjacent vegetation in more mesic habitats is alpine turf dominated by graminoids and more mesic forbs.  Accession Code: urn:lsid:vegbank.org:commConcept:38625-{1D5778B8-8A9A-40F9-9EDC-0F2EF8959A7D} Plot-observations of this Community Concept: 0
	Party Perspective according to: NatureServe (organization) Perspective from: 26-Sep-2014 to: ongoing
	status: accepted Community's Parent: Carex macrochaeta - Carex spectabilis - Phlox diffusa ssp. longistylis Alpine-Subalpine Tundra Group This Community's Level: Alliance This Community's Children: Show/Hide   Erigeron aureus - Lupinus sellulus Alpine Fell-field   Minuartia obtusiloba - Lupinus sellulus Alpine Fell-field		Names:   UID: ELEMENT_GLOBAL.2.899462 NatureServe Explorer   Code: A3338   Translated: Twin-flower Sandwort - Donner Lake Lupine Cascade Alpine Fell-field Alliance   Common: Cascadian Twin-flower Sandwort - Donner Lake Lupine Alpine Fell-field   Scientific: Minuartia obtusiloba - Lupinus sellulus Cascade Alpine Fell-field Alliance