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records 5481 through 5490 of 38961

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Comm #5481
 
Populus fremontii / Salix (ligulifolia, lutea) Woodland
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accession code: VB.CC.31817.CEGL004002
Western Ecology Working Group of...  0 This woodland association is known from narrow stream terraces and intermittently flooded drainage bottoms in Canyonlands National Park and Natural Bridges National Monument. Occurrences range from 1555 to 1910 m of elevation on flat, moderately well- to rapidly drained substrates of sands or loamy sands derived of alluvium. Bare ground, litter, and bare sand occupy most of the unvegetated surface. The vegetation of these stands is characterized by open canopies of <i>Populus fremontii</i> with a moderately dense to dense shrub layer dominated by <i>Salix lutea</i>. Other shrub associates include <i>Salix exigua, Mahonia fremontii, Tamarix chinensis</i>, and <i>Rhus trilobata</i>. The herbaceous layer may be patchy to dense depending on shrub cover. Herbaceous associates include <i>Equisetum laevigatum, Phragmites australis, Juncus arcticus, Solidago canadensis, Heterotheca villosa, Comandra umbellata</i>, and <i>Penstemon cyanocaulis</i>, and <i>Juncus balticus</i>. 
Comm #5482
 
Pinus tropicalis / Senecio buchii - Tournefortia selleana Forest
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accession code: urn:lsid:vegbank.org:commConcept:36459-{922F5295-052D-4364-B2B6-4481934B53E6}
NatureServe Biotics 2019  0 Mixed mid-altitude <i>Pinus tropicalis</i> forests, in Sierra de Bahoruco. Characteristic differential species include <i>Senecio buchii, Tournefortia selleana, Coreopsis buchii, Salvia bahorucana, Sophora albolineata, Polygala crucianclloides, Mitracarpus bahorucana, Scrophularia bahorucana, Cestrum humile, Symplocos domingensis</i>, and <i>Duranta arida var. serpentina</i>. DISTRIBUTION: Hispaniola: Sierra de Bahoruco. 
Comm #5483
 
Populus fremontii / Sporobolus airoides Woodland
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accession code: VB.CC.31912.CEGL004003 NOT CURRENTLY ACCEPTED
Western Ecology Working Group of...  0 This apparently rare association is known from a single occurrence in Canyonlands National Park. Additional information about its distribution and composition will be added following further inventory. It occurs on flat stream terraces at 1382 m elevation. The soil is rapidly drained loamy sand derived from alluvium. This occurrence is characterized by an open canopy of <i>Populus fremontii</i>. Scattered shrubs have less than 10% cover and include <i>Mahonia fremontii, Atriplex canescens, Artemisia filifolia, Gutierrezia sarothrae</i>, and <i>Opuntia erinacea</i>. <i>Sporobolus airoides</i> is the herbaceous dominant. Other herbaceous species found in the sampled plot include <i>Phragmites australis, Distichlis spicata, Achnatherum hymenoides, Vulpia octoflora (= Festuca octoflora), Sphaeralcea parvifolia, Lepidium montanum</i>, and <i>Iva acerosa</i>. 
Comm #5484
 
Salix nigra / Cephalanthus occidentalis Forest
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accession code: VB.CC.19908.SALIXNIGRACEPHA
Southeastern Ecology Working Gro...  0 This forest occurs along the shores of lakes, ponds, and possibly in other topographic situations in the East Gulf Coastal Plain, and possibly in other regions as well (e.g., West Gulf Coastal Plain, Upper West Gulf Coastal Plain). The canopy is strongly dominated by Salix nigra, with Liquidambar styraciflua, Acer rubrum, and other species likely. Cephalanthus occidentalis is the strong dominant in the shrub layer and may be the only species present in that stratum. This is an early successional forest. 
Comm #5485
 
CEGL000231
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accession code: VB.CC.2857.CEGL000231 NOT CURRENTLY ACCEPTED
EcoArt 2002  0  
Comm #5486
 
A.2553
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accession code: VB.CC.1818.A2553 NOT CURRENTLY ACCEPTED
EcoArt 2002  0 This shrub herbaceous alliance is described for the mountainous regions of the southern portion of the Challis Volcanics ecoregional section in central Idaho. Stands are found on gently sloped ridgetops and benches at 1830 to 2690 m (6000-8800 feet) elevation. Soils are typically poorly drained or subject to a lengthy period of saturation during spring. Stand structure and composition have not been studied in detail. ~Artemisia arbuscula ssp. thermopola$ is the dominant shrub species and occurs with abundant cover of ~Festuca idahoensis$. ~Poa secunda$ and ~Elymus elymoides$ are also usually present. ~Carex elynoides$ is important in high-elevation stands reported from one site. A variety of perennial forbs are usually present. These species are characteristic of rocky sites at moderate to high elevations in the mountains, including ~Erigeron compositus, Antennaria rosea, Phlox hoodii, Cymopterus nivalis (= Cymopterus bipinnatus), Eriogonum umbellatum$, and ~Lewisia rediviva$. Diagnostic of this alliance is a moderate (>20% cover) perennial graminoid layer with an ~Artemisia arbuscula ssp. thermopola$-dominated low-shrub layer that has 10-40% cover. 
Comm #5487
 
Salsola spp. Ruderal Herbaceous Vegetation
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accession code: VB.CC.31638.CEGL004004
Western Ecology Working Group of...  0 This herbaceous association is known from Canyonlands National Park and Great Sand Dunes National Monument and occurs on floodplains, canyon bottoms, playas, and on active sand dunes. Sites are on flat to steep slopes (0-25°) between 1195 and 2297 m elevation. Sand or bare soil cover most of the unvegetated surface, although some sites have moderate cover of litter representing the previous crop of annual weeds. Biological soil crusts provide sparse to moderate cover depending on whether the site is being grazed. Soils are moderately well-drained to rapidly drained sands, silt loams, or clays derived from alluvium. Vegetation is dominated by exotic annual weedy species, especially <i>Salsola tragus</i>. Scattered native shrubs may be present, including <i>Atriplex canescens, Atriplex confertifolia, Ephedra torreyana, Krascheninnikovia lanata, Ericameria nauseosa, Opuntia polyacantha, Opuntia phaeacantha var. major, Sarcobatus vermiculatus</i>, and <i>Sclerocactus whipplei</i>. Remnant native herbaceous species contribute little cover but are usually present; <i>Sporobolus cryptandrus, Achnatherum hymenoides, Pleuraphis jamesii, Sporobolus airoides, Cryptantha</i> sp., <i>Sphaeralcea coccinea, Plantago patagonica, Cleome lutea, Ambrosia acanthicarpa, Eriogonum inflatum</i>, and <i>Lappula occidentalis</i> were recorded in the sample plots. <i>Bromus tectorum</i> generally has significant cover. Some areas with fine-textured soils lack biological soil crusts, but sandy sites can have as much as 60% cover. 
Comm #5488
 
Sphagnum cuspidatum Seasonally Flooded Nonvascular Alliance
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accession code: VB.CC.24027.SPHAGNUMCUSPIDA
Southeastern Ecology Working Gro...  0 This alliance includes depressions in Coastal Plain sands dominated by aquatic mats of Sphagnum cuspidatum, usually with little or no vascular vegetation, except sometimes Utricularia spp. These communities are seasonally flooded 15-100 cm deep, generally ponded during the winter months into the spring, but drying down by late summer in most years. The Sphagnum is usually stranded as bleached remnants by early autumn. 
Comm #5489
 
Pinus edulis - Juniperus osteosperma / Fendlera rupicola Woodland
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accession code: VB.CC.31952.CEGL004005
Western Ecology Working Group of...  0 This woodland association is known from the Northern Colorado Plateau at Canyon de Chelly National Monument in northeastern Arizona and Canyonlands National Park in southwestern Utah. It occurs in canyons, ridges and talus slopes from 1637-2146 m (5369-7041 feet) elevation. Stands occur on gentle to moderately steep slopes (8-25%) on all aspects. The soils are generally shallow and rocky, and loamy sand to sandy loam in texture. The vegetation is characterized by an open to moderately dense tree canopy (10-50% cover) codominated by <i>Pinus edulis</i> and <i>Juniperus osteosperma</i>. <i>Juniperus monosperma</i> may be present in some stands. <i>Fendlera rupicola</i> dominates or codominates the open to moderately dense tall-shrub layer. Other shrubs may be present, including <i>Artemisia ludoviciana, Artemisia tridentata, Gutierrezia microcephala, Gutierrezia sarothrae, Opuntia phaeacantha, Opuntia polyacantha var. polyacantha, Opuntia whipplei</i>, and <i>Purshia stansburiana</i>. <i>Quercus gambelii</i> may be present with <5% cover. Herbaceous cover is variable, ranging from sparse to moderately dense, but is generally dominated the perennial graminoid <i>Bouteloua gracilis</i> (<5% cover) with scattered perennial forbs. 
Comm #5490
 
Andropogon gerardii - Schizachyrium scoparium - Dichanthelium scoparium - Rhynchospora glomerata Herbaceous Vegetation
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accession code: VB.CC.36231.CEGL004006
Southeastern Ecology Working Gro...  0 This is a wet-mesic phase of prairies of the Eastern Highland Rim of south-central Tennessee. May Prairie, Coffee County, Tennessee, is the only remaining high-quality example of this vegetation type, which was apparently once represented at other sites (though never extensive). Stands are dominated by <i>Andropogon gerardii, Schizachyrium scoparium, Dichanthelium scoparium</i>, and <i>Rhynchospora glomerata</i>. This community is distinguished from most other prairie communities by its strong representation of a southern, Coastal Plain component in its flora, including various <i>Rhynchospora</i> spp., <i>Dichanthelium</i> spp., and others. It is distinguished from the associated community at May Prairie, ~<i>Schizachyrium scoparium - Panicum anceps - Panicum virgatum - Lespedeza capitata - Scleria</i> spp. Herbaceous Vegetation (CEGL004063)$$ by being wetter, and having a stronger component of species such as <i>Rhynchospora glomerata, Rhynchospora globularis, Rhynchospora capitellata, Eryngium integrifolium, Dichanthelium scoparium, Dichanthelium aciculare, Rosa setigera</i>, and <i>Scleria verticillata</i>. This association is also reported from a site in the Northern Loessal Hills of Mississippi (Natchez Trace Parkway), more information is needed. 

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