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Add/Drop	Name	Reference	Plots↓	Description
Comm #4631	Elaeagnus commutata / Pascopyrum smithii Wet Shrubland » more details accession code: urn:lsid:vegbank.org:commConcept:30008-{9A4D2388-AA2A-414D-AB91-7A6E16E33146}	NatureServe Biotics 2019	1	This silverberry shrubland occurs in the northwestern portion of the Great Plains of the United States and Canada. Stands occur on a variety of glacial landforms including kames, eskers, and areas of till and outwash. They are common on north-facing slopes and sites where moisture is more abundant, including along river valley slopes. The vegetation forms open thickets within the mixed-grass prairie landscape. <i>Elaeagnus commutata</i> is generally a short to medium height shrub, although it can grow up to 5 m. These thickets are often associated with <i>Rosa woodsii</i> and <i>Symphoricarpos occidentalis</i>. Other plants associated with this type include <i>Pascopyrum smithii, Elymus trachycaulus, Anemone multifida, Symphyotrichum laeve, Campanula rotundifolia, Festuca altaica, Geum triflorum, Heuchera richardsonii</i>, and <i>Potentilla arguta</i>. This shrubland occurs in relatively open stands.
Comm #4632	Rhus trilobata / Pseudoroegneria spicata Shrub Grassland » more details accession code: urn:lsid:vegbank.org:commConcept:30029-{8D8F09A9-C6B8-4927-ACE7-00CF5ED0A3EB}	NatureServe Biotics 2019	1	This shrub grassland is found in the United States on dry mid to upper slopes and ridgetops in the eastern plains and mountains of Wyoming and Montana. Slope and aspect are variable, but soils are consistently shallow and rocky. Herbaceous species dominate the vegetation with short shrubs and nonvascular plants present but of lesser importance. Total vegetation cover is moderate, and few plants grow taller than 1 m. Shrubs generally have from 10-25% cover. <i>Rhus trilobata</i> is the most common. It is often found with <i>Artemisia frigida, Artemisia tridentata, Prunus virginiana, Ribes cereum</i>, or <i>Eriogonum</i> spp. <i>Pseudoroegneria spicata</i> is the most abundant herbaceous species. Others commonly found include <i>Koeleria macrantha, Schizachyrium scoparium, Bouteloua curtipendula, Bromus tectorum</i>, and <i>Opuntia polyacantha</i>.
Comm #4633	Rosa woodsii Wet Shrubland » more details accession code: urn:lsid:vegbank.org:commConcept:30035-{E07106C3-9FBD-4372-B5F8-3BE362D01F1E}	NatureServe Biotics 2019	1	This shrubland occurs in the foothills and plains of Montana, Idaho, Nevada, and eastern California. Elevations range from 650-2490 m. Stands occur in floodplains and on alluvial terraces along rivers and streams, on hillsides below springs, and in ravines and swales where overland flow from snowmelt and summer thunderstorms provides additional moisture. It can also occur on disturbed sites with little moisture, such as steep south-facing hill slopes. Sites are flat to moderately steep. Floodplain sites are temporarily flooded, well-drained with no perched water table. Soils range from sandy loams to silt loams. Stands typically have a moderately dense short-shrub layer which <i>Rosa woodsii</i> dominates. Some stands have moderate cover of <i>Rosa acicularis, Symphoricarpos occidentalis</i>, or <i>Toxicodendron rydbergii</i>. Other shrubs can include <i>Artemisia tridentata</i> and <i>Ribes aureum</i>. Some stands have an herbaceous layer dominated by the exotic grasses <i>Poa pratensis</i> or <i>Bromus tectorum</i> and the weedy forb <i>Cirsium arvense</i>. Other common herbaceous species include perennial graminoids, such as <i>Elymus glaucus, Leymus cinereus, Carex</i> spp., <i>Juncus arcticus ssp. littoralis</i>, and <i>Muhlenbergia racemosa</i>, and the forbs <i>Achillea millefolium, Ambrosia psilostachya, Artemisia ludoviciana, Fragaria virginiana, Galium boreale, Geum macrophyllum</i>, and <i>Solidago canadensis</i>.
Comm #4634	IV.A.1.N.g » more details accession code: VB.CC.743.IVA1NG	EcoArt 2002	1
Comm #4635	Salix planifolia / Carex scopulorum Wet Shrubland » more details accession code: urn:lsid:vegbank.org:commConcept:30138-{0257BF7B-E68C-4F98-A265-3582F77DAAD8}	NatureServe Biotics 2019	1	This plant community is found at high elevations in the southern Rocky Mountains and the Beartooth Plateau in northwestern Wyoming, eastern Idaho, and the North Cascades in Washington. Elevations range from 3230-3810 m (10,600-12,500 feet) in Colorado, near 2900 m (9500 feet) in Wyoming, and 1585-2260 m (5200-7400 feet) in Washington. Stands primarily occur at low to middle alpine elevations, although they occur in the subalpine in western Colorado. This community occupies diverse topographic positions, being found within and around seepage areas and drainages fed by persistent but melting snowfields and in headwaters of streams. The dependence of this community on snowmelt runoff allows its occurrence on steep cirque walls, as well as gently sloping hillsides or flats near lakes. Substrates are shallow to moderately deep, with high organic content, and range from loamy mineral to organic soils. The vegetation is characterized by the low willow layer dominated by <i>Salix planifolia</i> with an average of 60% cover. <i>Salix glauca</i> and <i>Betula glandulosa</i> are present in some stands. <i>Carex scopulorum</i> usually dominates the herbaceous understory with 25-50% cover. However, in some stands, <i>Caltha leptosepala</i> may codominate, the two species together averaging 30% cover. Associated understory species may include <i>Deschampsia cespitosa, Eleocharis quinqueflora, Juncus</i> spp., <i>Luzula spicata, Poa alpina</i>, and <i>Poa reflexa</i>, among the graminoids, and <i>Castilleja occidentalis, Gentiana algida, Geum rossii, Pedicularis groenlandica, Polygonum bistortoides, Polygonum viviparum, Potentilla diversifolia, Rhodiola rhodantha, Swertia perennis, Trifolium parryi</i>, and <i>Trollius laxus</i>, among the forbs.
Comm #4636	Artemisia nova / Hesperostipa comata Shrubland » more details accession code: urn:lsid:vegbank.org:commConcept:30334-{E3DD20B3-FA6A-4C16-95C2-B421319CB15A}	NatureServe Biotics 2019	1	This association is found in the foothills, plateaus and mountains of Nevada, Idaho, northwestern Colorado and Utah. Stands occur on flat mesatops, benches and plains or on steep pediment slopes, knolls and ridges, and elevations range from 1890 to 2530 m. Aspects are often southern. Substrates are typically shallow, stony soils often derived from calcareous parent materials such as limestone. Soil textures are variable and range from sandy, loamy, fine-textured or skeletal; argillic subsoil horizons are common. There is often an impenetrable subsurface layer from a duripan, caliche, or bedrock. Combined ground cover of bare ground, rock and gravel is often high (about 70% cover). Litter is concentrated under the shrub canopies. The vegetation is characterized by an open dwarf-shrub canopy (10-30% cover) that is dominated by <i>Artemisia nova</i> and a sparse herbaceous layer dominated by the perennial graminoid <i>Hesperostipa comata</i> with scattered forbs. Scattered <i>Chrysothamnus viscidiflorus, Ericameria parryi, Grayia spinosa, Krascheninnikovia lanata</i>, and <i>Tetradymia canescens</i> are common shrub associates that may be present in smaller amounts. <i>Achnatherum hymenoides, Elymus elymoides, Koeleria macrantha, Pleuraphis jamesii, Poa fendleriana</i>, or <i>Poa secunda</i> may be present in the herbaceous layer but have sparse cover. Forbs include species of <i>Astragalus, Erigeron, Eriogonum, Packera, Phlox</i>, and <i>Penstemon</i>. Introduced annual graminoids such as <i>Bromus rubens</i> and <i>Bromus tectorum</i> are common in disturbed stands.
Comm #4637	Atriplex gardneri / Pascopyrum smithii Dwarf-shrubland » more details accession code: urn:lsid:vegbank.org:commConcept:30354-{8DE80A29-8428-496E-893B-F60193C535D3}	NatureServe Biotics 2019	1	This dry dwarf-shrub - mixedgrass type is found in eastern Wyoming and Montana and western South Dakota. <i>Atriplex gardneri</i> is the dominant dwarf-shrub. A variety of herbs are associated with the type, including <i>Pascopyrum smithii</i>. Plots in eastern Wyoming are found on upper slopes with clay soils, underlain by shale bedrock. Bare ground and gravel cover is 80-90%. This type is not well-characterized.
Comm #4638	Spartina pectinata Western Wet Meadow » more details accession code: urn:lsid:vegbank.org:commConcept:30385-{0A7B5CF1-5E88-4ADC-BB0C-6ADAF2A4225D}	NatureServe Biotics 2019	1	This association is common in wetlands and riparian areas of the Great Plains from eastern Montana south to Wyoming and Colorado, west to eastern Oregon and Washington, and occurs in small, scattered areas along rivers in the Colorado Plateau. Elevation ranges from 716-1770 m (2350-5800 feet). On large river floodplains, this type occurs as distinct patches and is distinguished from adjacent riparian types by micro-topography and degree of soil saturation. Substrates are usually poorly to moderately well-drained, finer textured soils, but vary to coarser textures. Stands generally occur as distinct patches in a matrix of other tallgrass and wetland associations, separated by differences in micro-topography and degree of soil saturation. This is a dense to moderately dense, tallgrass wet meadow that is characterized by being composed almost entirely of <i>Spartina pectinata</i>. Other herbaceous species such as <i>Andropogon gerardii, Calamagrostis canadensis, Carex nebrascensis, Carex pellita, Carex praegracilis, Equisetum hyemale, Glycyrrhiza lepidota, Panicum virgatum</i>, and <i>Pascopyrum smithii</i> may be present but contribute low cover. However, <i>Schoenoplectus pungens</i> may codominate some stands. Scattered woody species may also be present such as <i>Amorpha fruticosa, Chrysothamnus linifolius, Populus deltoides ssp. wislizeni, Salix exigua</i>, and the invasive exotic <i>Tamarix ramosissima</i>. The invasive thistle <i>Cirsium arvense</i> may be abundant in some stands. Historic sources cite large stands in mudflats along the Missouri and Platte rivers. Large stands have been observed south of Denver that are now threatened by housing and golf course developments.
Comm #4639	Spartina pectinata - Schoenoplectus pungens Wet Meadow » more details accession code: urn:lsid:vegbank.org:commConcept:30387-{6DEA282B-9297-4411-8B24-79BEB9ECC2EE}	NatureServe Biotics 2019	1	This wetland plant association seems to occur on the Great Plains of eastern Montana and northeastern Wyoming, in stream channels and on low terraces. Soils range in texture from clay to loam, and often are only moderately saline (although salt concentration may be high). The water table is near the soil surface throughout the year. <i>Spartina pectinata</i> generally dominates the vegetation, and <i>Schoenoplectus pungens</i> is present in substantial amounts and may codominate.
Comm #4640	Artemisia tridentata ssp. vaseyana / Festuca idahoensis Shrub Grassland » more details accession code: urn:lsid:vegbank.org:commConcept:30442-{C8C67299-CD5F-4E8B-8C78-71D6F1E03400}	NatureServe Biotics 2019	1	This association is widespread in mountainous areas across the western U.S. The shrubland can form large, continuous stands on mid-elevation mountain slopes and foothills, and can extend above lower treeline as patches within montane or subalpine coniferous forests. Sites are variable and range from flats to steep slopes to ridgetops with deep to shallow rocky soil. The vegetation is characterized by an open (&lt;25% cover on average) shrub layer of <i>Artemisia tridentata ssp. vaseyana</i>, but generally high cover of perennial graminoids (&gt;20% total cover). Associated shrubs include <i>Artemisia arbuscula, Artemisia rigida, Ribes cereum, Purshia tridentata, Prunus virginiana</i>, and <i>Tetradymia canescens</i>. The herbaceous layer is typically abundant and dominated by perennial graminoids. The most common species is the bunchgrass <i>Festuca idahoensis</i>. Other locally important species include <i>Pseudoroegneria spicata, Festuca thurberi, Bromus carinatus, Elymus elymoides, Elymus trachycaulus, Koeleria macrantha, Achnatherum occidentale</i>, and <i>Poa secunda</i>. Forb canopy cover and species composition are variable. Characteristic forb species include <i>Castilleja, Potentilla, Erigeron, Phlox, Astragalus, Geum, Lupinus</i>, and <i>Eriogonum</i>. Other forbs common, if less frequent, include <i>Balsamorhiza sagittata, Achillea millefolium, Eriogonum umbellatum, Antennaria rosea</i>, and <i>Geranium viscosissimum</i>. Some authors have noted different phases based on dominance of forb species. All phases are included within this one herbaceous shrubland concept. Trees are uncommon but individuals of <i>Pinus ponderosa, Cercocarpus ledifolius, Populus tremuloides, Juniperus occidentalis, Pinus albicaulis</i>, and <i>Abies lasiocarpa</i> may occasionally occur.