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Name
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Reference
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Plots↓
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Description |
Comm #10451
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Calamagrostis stricta Herbaceous Vegetation
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accession code: VB.CC.31507.CEGL002891
NOT CURRENTLY ACCEPTED
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Western Ecology Working Group of... |
0
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Comm #10452
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A.974
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accession code: VB.CC.2601.A974
NOT CURRENTLY ACCEPTED
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EcoArt 2002 |
0
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This riparian vegetation occurs along stream channels in V-shaped valleys in mountains of southeastern Oregon. Stands are typically narrow, occupying elevated streambanks and terraces within the floodplain, but can be broader where environmental conditions permit. Sites are flat to gently sloping (<10%) with the water table generally >1 m deep. Soils are derived from alluvium. The vegetation is characterized by a moderately dense to dense (up to 98% cover), cold-deciduous tall-shrub layer (2-5 m tall) that is dominated by ~Salix lutea$ with ~Salix boothii$ sometimes codominating. The short-shrub layer is typically sparse and averages between (25-30% cover), with a range of 5-85% cover. The most consistent short shrub is ~Rosa woodsii$ with ~Ribes aureum$ or ~Ribes inerme$ codominating. Other shrub species include ~Salix exigua, Salix geyeriana$, and ~Symphoricarpos oreophilus$. The herbaceous layer is moderately dense (30-50% cover) with a fairly even mixture of perennial graminoids and forbs. |
Comm #10453
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V.D.1
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accession code: VB.CC.164.VD1
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EcoArt 2002 |
0
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Comm #10454
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Carex scirpoidea - Geum rossii Herbaceous Vegetation
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accession code: VB.CC.20856.CAREXSCIRPOIDEA
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Western Ecology Working Group of... |
0
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This community has been described for only southwestern Montana in the Tobacco Root, East Pioneer and Madison ranges. Stands may be restricted to non-calcareous substrates, having been reported from granitic, intrusive volcanics, and gneiss parent materials (all non-calcareous) in mountain ranges that have an abundance of exposed calcareous substrates. This association spans nearly the full range of alpine elevations in this portion of Montana, from 9300-10,340 feet. Sampled sites are about evenly divided between low-gradient slopes and steeper slopes, with all aspects represented. The most characteristic environmental parameter is some degree of enhanced effective moisture (relative to dry turf associations) through increased snowpack or delayed snowmelt. This vegetation occurs as small to large patches, often scattered among boulders that act as eddy current creating snow fences, serving to increase snowpack in their immediate vicinities. Fibrous-rooted graminoids dominate and create an alpine turf community, not much exceeding 1 dm in height, with the exception of flowering stalks. Graminoids average about 40% canopy cover. Though named for Carex scirpoidea, which has a high constancy and average canopy cover (24%) and is considered diagnostic, other Carex spp. (Carex phaeocephala, Carex albonigra, Carex atrosquama) are diagnostic as well (note none of the above-named Carices are employed as naming-species elsewhere in the National Vegetation Classification System). Other high-constancy graminoids include Luzula spicata, Poa alpina, Poa secunda, and Trisetum spicatum, with the moister sites having scattered Deschampsia caespitosa (under 5% cover). Exhibiting 100% constancy and 37% average canopy cover Geum rossii is a conspicuous dominant; other high-constancy forbs include Minuartia obtusiloba, Potentilla diversifolia, Phlox pulvinata, Polygonum bistortoides, Erigeron simplex, Lloydia serotina, and Lupinus argenteus. This association most frequently grades to drier turf or cushion plant communities, usually Carex elynoides Herbaceous Vegetation (CEGL001852) or Carex rupestris - Potentilla ovina Herbaceous Vegetation (CEGL001862) of more exposed positions and DRY SLOPE and MOIST SLOPE community types on steeper, more unstable slopes. |
Comm #10455
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CEGL008363
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accession code: VB.CC.7704.CEGL008363
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EcoArt 2002 |
0
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Comm #10456
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CEGL000194
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accession code: VB.CC.2820.CEGL000194
NOT CURRENTLY ACCEPTED
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EcoArt 2002 |
0
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Comm #10457
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(Kalmia latifolia, Physocarpus opulifolius) / Schizachyrium scoparium - Thalictrum revolutum - Sibbaldiopsis tridentata Shrub Herbaceous Vegetation
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accession code: VB.CC.34791.CEGL004238
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Southeastern Ecology Working Gro... |
0
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These are sloping, grass-dominated, herbaceous openings which range from a grassland to shrubland physiognomy. This community occurs at high elevations (around 1200 m [3970 feet]) in the Blue Ridge uplands where the soils are thin and poorly developed over amphibole or hornblende bedrock. Examples occur on upper south-facing slopes. The soils (Lithic Haplorthents) are droughty and thin and do not buffer the flora from the mafic character of the bedrock. They may, however, be seasonally wet, and the diagnostic flora may reflect the unique soil and moisture conditions. The occurrence of continuous, generally flat mafic rock as opposed to the irregular fragmented rock of most rocky summits is characteristic of this community. This feature may restrict the flora to those species which can survive in shallow crevices or on thin veneers over smooth rock. There are typically some extremely stunted trees and scattered shrubs, the most common being <i>Quercus rubra, Kalmia latifolia, Salix humilis, Physocarpus opulifolius, Vaccinium stamineum</i>, and <i>Vaccinium pallidum</i>. Woody plants are generally restricted to microsites with slightly deeper soils. The most characteristic herbaceous species include <i>Schizachyrium scoparium</i> (generally most abundant), <i>Danthonia spicata, Coreopsis major, Thalictrum revolutum, Sibbaldiopsis tridentata, Heuchera villosa, Helianthemum bicknellii, Ionactis linariifolius</i>, and <i>Liatris</i> spp. Many of the characteristic herbaceous species occur in crevices among exposed rock, but some larger, continuous patches of the dominant grasses may occur where thin veneers of soil have accumulated over the rock surfaces. Annuals such as <i>Hypericum gentianoides</i> and <i>Polygala curtissii</i> may be seasonally abundant. Many additional herbaceous species occur at low cover and constancy. Much of the remaining area is dominated by <i>Cladonia</i> and <i>Cladina</i> lichens which grow directly on the exposed bedrock. |
Comm #10458
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CEGL000226
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accession code: VB.CC.2852.CEGL000226
NOT CURRENTLY ACCEPTED
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EcoArt 2002 |
0
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Comm #10459
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IV.C.2
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accession code: VB.CC.165.IVC2
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EcoArt 2002 |
0
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Comm #10460
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CEGL003394
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accession code: VB.CC.5450.CEGL003394
NOT CURRENTLY ACCEPTED
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EcoArt 2002 |
0
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