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Name
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Reference
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Plots↓
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Description |
Comm #5171
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A.1263
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accession code: VB.CC.1031.A1263
NOT CURRENTLY ACCEPTED
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EcoArt 2002 |
0
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These grasslands have been described from basins and drainages east of the Cascades in central Oregon. Elevations range from 1280-1830 m. Stands occur in floodplains and terraces along low-gradient streams. Sites are flat to gently sloping. Stands in the bottomlands may be seasonally flooded during the winter. Upland stands in pumice-mantled basin meadows are not flooded except during abnormally wet years. Water tables are a meter below ground by midsummer and are very deep by late summer. Soils are moderately deep alluviums. Soil textures range from sandy loam to silty loam. Soil parent material is pumice. Vegetation included in this grassland alliance has a moderately dense to dense (60 to more than 80% cover) herbaceous layer about 0.5 m tall. Stands are dominated by the midgrass ~Poa fendleriana ssp. fendleriana$ with several other graminoids, including ~Carex athrostachya, Carex filifolia, Carex praegracilis, Elymus caninus, Koeleria macrantha$, and ~Muhlenbergia richardsonis$. Forb cover is relatively sparse (usually less 25%) and consists of ~Achillea millefolium$ and ~Symphyotrichum campestre var. bloomeri (= Aster campestris var. bloomeri)$. Adjacent stands include upland coniferous forests dominated by ~Pinus contorta$ and various wetlands dominated by herbaceous and shrub species of ~Carex$ and ~Salix$. |
Comm #5172
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A.1269
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accession code: VB.CC.1037.A1269
NOT CURRENTLY ACCEPTED
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EcoArt 2002 |
0
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Vegetation included in this minor alliance occurs on mesas, plains and dunes with gypsiferous soil in New Mexico. Elevations range from 1150-1740 m. Climate is semi-arid to arid with most of the highly variable precipitation falling in late summer and early fall. Mean annual precipitation ranges from 20-32 cm. Soils are shallow, poorly developed, saline, alkaline and gypsiferous. Soil textures range from fine sandy loams to silty clay loams. Plant and litter cover are low, and bare ground is high (90%). Shale and sandstone rock outcrops may also be present. Stands in this alliance are poorly known and have only been described from mesas in the Rio Puerco watershed and gypsum flats and dunes in the White Sands Missile Range. The diagnostic species is the perennial grass ~Sporobolus nealleyi$, which dominates or codominates the sparse herbaceous layer, with ~Bouteloua eriopoda, Calylophus hartwegii$ and/or ~Leptodactylon$ spp. Associated grasses may include ~Pleuraphis jamesii (= Hilaria jamesii)$ and ~Bouteloua gracilis$. Frequent forbs include ~Psilostrophe tagetina$ and ~Sphaeralcea coccinea$. In addition, scattered shrubs and dwarf-shrubs may be present, including ~Atriplex canescens, Ephedra torreyana, Flourensia cernua, Krascheninnikovia lanata, Gutierrezia sarothrae$, and ~Lycium pallidum$. |
Comm #5173
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A.1274
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accession code: VB.CC.1042.A1274
NOT CURRENTLY ACCEPTED
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EcoArt 2002 |
0
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This alliance includes upland dune grassland of barrier islands of the Mid-Atlantic and Gulf coasts. ~Spartina patens$ and ~Schoenoplectus pungens (= Scirpus pungens)$ are characteristically dominant, though other graminoids such as ~Schoenoplectus pungens, Sporobolus virginicus, Cenchrus spinifex (= Cenchrus incertus), Cenchrus tribuloides$, and ~Paspalum distichum$ may be codominant or prominent within their respective ranges. In parts of the range of this alliance, ~Spartina patens$ is dominant and ~Schoenoplectus pungens$ may be absent. This community characteristically occupies overwash terraces or low dunes, less well-developed than those dominated by ~Uniola paniculata$ (from North Carolina south and west to Texas and Tamaulipas, Mexico) or by ~Ammophila breviligulata$ (from North Carolina northwards). Total vegetation cover is variable, ranging from quite sparse (25% cover) to dense. Bare sand is often visible through the vegetation, and there is no soil profile development. Species diversity is variable; although it may be quite low and confined to the nominal species in the northern part of the range, it may be of greater diversity. Other components of this vegetation include ~Strophostyles helvula, Solidago sempervirens, Cenchrus tribuloides, Setaria parviflora, Distichlis spicata, Sabatia stellaris, Ammophila breviligulata, Suaeda linearis, Bassia hirsuta$ (an exotic), ~Atriplex patula, Polygonum glaucum, Spergularia salina (= Spergularia marina), Salicornia bigelovii, Salicornia virginica, Fimbristylis castanea$, and ~Cakile edentula ssp. edentula$. Woody species may include scattered individuals of ~Toxicodendron radicans, Solidago sempervirens, Lythrum lineare, Kosteletzkya virginica$, and seedlings of ~Baccharis halimifolia$. The plants of this community are influenced by sand deposited by storm surges. Storm overwash is a prevalent natural disturbance to this community. This community appears to be successional between interdunal herbaceous wetlands and interdunal herbaceous/shrub uplands. |
Comm #5174
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Populus tremuloides / Amelanchier alnifolia / Thalictrum fendleri Forest
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accession code: VB.CC.27038.POPULUSTREMULOI
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Western Ecology Working Group of... |
0
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Comm #5175
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Pinus monophylla - Juniperus osteosperma / Artemisia tridentata ssp. vaseyana / Pseudoroegneria spicata Woodland
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accession code: VB.CC.26430.PINUSMONOPHYLLA
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Western Ecology Working Group of... |
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This woodland plant association is described from stands located in the Jim Sage Mountains and west-central Albion Mountains of Idaho, within the Northwest Basin and Range ecoregional section. Additional stands are expected to occur in northern Utah or Nevada. The plant association occurs on a range of different parent materials. Occurrences are described from moderately steep slopes in ridgetop and upper slope positions, on north- to northeast- and east- to southeast-facing slopes. Pinus monophylla and Juniperus osteosperma are codominant often with nearly equal cover. Stands are open, with a mix of medium to large sized mature trees and seedling, sapling and pole sized regeneration. Artemisia tridentata ssp. vaseyana is well represented in the relatively sparse shrub layer. Pseudoroegneria spicata is consistently well represented; Poa secunda is present. |
Comm #5176
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A.1609
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accession code: VB.CC.1364.A1609
NOT CURRENTLY ACCEPTED
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EcoArt 2002 |
0
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This alliance typically occurs at or slightly below the upper treeline in high Cascades of the Pacific Northwest, often in association with subalpine parkland. Deep snow accumulations and elevations between 1800-2000 m create a short growing season. These communities occur on well-drained, moderately steep to steep slopes, which clear of snow by early summer. These are lush herbaceous communities with a mixture of forbs and graminoids. ~Lupinus arcticus ssp. subalpinus$ is the dominant species, but ~Carex spectabilis$ may be codominant in some stands. Other forbs with high constancy include ~Polygonum bistortoides, Castilleja parviflora, Potentilla flabellifolia, Pulsatilla occidentalis (= Anemone occidentalis), Valeriana sitchensis$, and ~Erigeron peregrinus$. ~Carex nigricans$ and ~Festuca idahoensis$ are occasional graminoids present. |
Comm #5177
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III.B.2.C
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accession code: VB.CC.281.IIIB2C
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EcoArt 2002 |
0
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Comm #5178
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Cirsium scopulorum - Polemonium viscosum Herbaceous Vegetation
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accession code: VB.CC.25560.CIRSIUMSCOPULOR
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Western Ecology Working Group of... |
0
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Comm #5179
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CEGL004902
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accession code: VB.CC.6320.CEGL004902
NOT CURRENTLY ACCEPTED
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EcoArt 2002 |
0
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Comm #5180
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Malosma laurina - (Rhus integrifolia) Shrubland [Placeholder]
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accession code: VB.CC.23194.MALOSMALAURINAR
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Western Ecology Working Group of... |
0
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