| Add/Drop |
Name
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Reference
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Plots↓
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Description |
Comm #6391
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CEGL004642
» more details
accession code: VB.CC.6170.CEGL004642
NOT CURRENTLY ACCEPTED
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EcoArt 2002 |
0
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Comm #6392
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CEGL004415
» more details
accession code: VB.CC.5977.CEGL004415
NOT CURRENTLY ACCEPTED
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EcoArt 2002 |
0
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Comm #6393
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CEGL004416
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accession code: VB.CC.5978.CEGL004416
NOT CURRENTLY ACCEPTED
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EcoArt 2002 |
0
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Comm #6394
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Hedysarum boreale - Arnica angustifolia - Saxifraga tricuspidata Herbaceous Vegetation
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accession code: VB.CC.25408.HEDYSARUMBOREAL
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Midwestern Ecology Working Group... |
0
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Comm #6395
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Equisetum (arvense, variegatum) Herbaceous Vegetation
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accession code: VB.CC.37078.CEGL005148
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Midwestern Ecology Working Group... |
0
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This wetland association is reported from Utah and Ontario, Canada, but its distribution is much broader. If its range is similar to the ranges of dominant and diagnostic species, then it likely occurs throughout much of northern and western North America. Sites include streambanks, wet meadows and ditches. Substrates are generally organic alluvium. This community is typically flooded much of the growing season. The water table is high even when surface water is gone. The vegetation is characterized by the moderately dense to dense herbaceous layer that is dominated or codominated by <i>Equisetum arvense</i> or <i>Equisetum variegatum</i>. Other wetland and facultative wetland plants may be present in low cover, but the dominance of <i>Equisetum</i> spp. is diagnostic of this type. Introduced graminoids such as the perennial <i>Poa pratensis</i> or the annual <i>Bromus diandrus</i> are known to codominate some stands. |
Comm #6396
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Prosopis velutina / Amaranthus palmeri Woodland
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accession code: VB.CC.31787.CEGL005341
NOT CURRENTLY ACCEPTED
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Western Ecology Working Group of... |
0
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This riparian woodland is described from southern Arizona. Plot data from Buenos Aires National Wildlife Refuge indicate an elevational range of 915-1090 m (3000-3570 feet) and that stands are found on flats and gentle slopes along drainages and in floodplains on valley floor. Soils are sandy loam or loam. Sites are typically disturbed. The vegetation is characterized by a moderately dense to dense tree canopy dominated or codominated by <i>Prosopis velutina</i> and with <i>Amaranthus palmeri</i> strongly dominating the moderately dense to dense herbaceous layer. Scattered short shrubs may be present but are generally not dense enough to form strata. Common herbaceous species include <i>Ambrosia confertiflora, Ambrosia psilostachya, Bouteloua aristidoides, Chloris virgata, Eragrostis intermedia, Ipomoea hederacea, Sporobolus airoides</i>, and <i>Tidestromia lanuginosa</i>. If present, <i>Eragrostis lehmanniana</i> cover is low, with less than 25% cover and less than a third of the total perennial graminoid cover. |
Comm #6397
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Bebbia juncea Shrubland
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accession code: VB.CC.31716.CEGL005391
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Western Ecology Working Group of... |
0
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This sweetbush shrubland association is currently described from Grand Canyon National Park and Grand Canyon-Parashant National Monument in Arizona. More survey and classification work are needed to fully characterize this type. It occurs in low-level drainage channels and along benches and terraces just above these dry washes. It typically occurs at 425 to 875 m (1400-2975 feet) elevation, on gentle gradients (up to 8°), and favors south- and west-facing aspects. Soils are sandy and rapidly-drained. Rocks, gravel, and sand are major components of the ground cover, while a notable amount of cryptogamic soil crust occurs in many stands. <i>Bebbia juncea</i> dominates and characterizes this vegetation type. Other scattered species, such as <i>Acacia greggii, Encelia farinosa, Ephedra fasciculata</i>, and <i>Trixis californica</i>, also commonly occur in the short-shrub stratum. The dwarf-shrub layer is particularly sparse, although <i>Porophyllum gracile</i> and <i>Opuntia basilaris</i> commonly occur. Graminoid cover is similarly sparse; <i>Aristida purpurea</i> is common. Forbs are also poorly-represented and composition varies considerably. |
Comm #6398
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Lemna spp. North American Boreal Aquatic Vegetation
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accession code: VB.CC.31475.CEGL005452
NOT CURRENTLY ACCEPTED
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Western Ecology Working Group of... |
0
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This aquatic association of floating vegetation is tentatively proposed for boreal regions of North America. <i>Lemna</i> spp. typically dominate but may be mixed with other plant taxa floating on the water surface. <i>Lemna</i>-dominated aquatic vegetation occupies wetlands that are permanently, semipermanently or seasonally flooded. These small plants may float on the water's surface or become stranded and possibly rooted during drawdown periods. Water chemistry is fresh. The standing water habitat is relatively shallow, generally less than 2-4 m (6.6-13.1 feet) and occurs as ponds, lakes, ditches, stock ponds, and backwater sloughs of river and stream channels. Standing water for much or most of the growing season is characteristic. Depth of the water is of no consequence to floating plants; they occur where the wind pushes them. The composition of examples varies across this wide distributional range. <i>Lemna</i> taxa that may be present in the boreal and subarctic regions of North America include <i>Lemna trisulca</i> (widespread temperate and boreal, but not southeast U.S.) and <i>Lemna turionifera</i> (widespread temperate and boreal, but not southeast U.S.). |
Comm #6399
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CEGL008508
» more details
accession code: VB.CC.7830.CEGL008508
NOT CURRENTLY ACCEPTED
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EcoArt 2002 |
0
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Comm #6400
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Populus deltoides ssp. wislizeni / Baccharis sarothroides Forest
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accession code: VB.CC.33316.CEGL000663
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Western Ecology Working Group of... |
0
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