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Add/Drop	Name	Reference	Plots↓	Description
Comm #5141	Elaeagnus commutata Temporarily Flooded Shrubland Alliance » more details accession code: VB.CC.25335.ELAEAGNUSCOMMUT	Western Ecology Working Group of...	0	This Elaeagnus commutata shrubland is a minor type forming narrow stringers on stream terraces in northern Montana, east of the Continental Divide. Stands in the foothills of the Rocky Mountains of Montana and Idaho appear to be more mesic than those from the eastern portion of its range. Elaeagnus commutata is the dominant shrub throughout. Salix spp., Amelanchier alnifolia, and Prunus virginiana may be common in western stands, while Rosa woodsii and Artemisia cana may occur in eastern stands. Common grasses in the east are Eurasian meadow grasses, while Elymus lanceolatus (= Agropyron dasystachyum), Hesperostipa comata (= Stipa comata), and Koeleria macrantha are common in the west. Riparian forbs are common in western stands, while grassland forbs predominate in eastern stands.
Comm #5142	Pinus jeffreyi / Ceanothus pumilus Wooded Herbaceous Vegetation » more details accession code: VB.CC.24514.PINUSJEFFREYICE	Western Ecology Working Group of...	0	This community is found in the Klamath-Siskiyou region of Oregon and California. Sites include a variety of slopes (0-45%) and all aspects except east. Elevations range from 360-1180 m (1180-3860 feet) in Oregon and 1390-1630 m (4560-5340 feet) in California. Exposed rocks and clay soils are typical with serpentine and peridotite parent material. An open overstory with a good variety of tree species, sizes, and heights over a sparsely vegetated understory is typical. Pinus jeffreyi dominates the open tree canopy with average cover of 10-25%. Calocedrus decurrens is also present and supports 5-10% cover. The dwarf-shrub layer is codominated by Ceanothus pumilus (= Ceanothus prostratus ssp. pumilus) with 8-29% cover (although due to its stature of less than 10 cm in height, it appears more like an herbaceous layer). Arctostaphylos canescens and Arctostaphylos viscida are also very abundant. The herbaceous layer is dominated by the perennial grasses, Achnatherum lemmonii (= Stipa lemmonii) and Festuca roemeri at many sites with 50% and 32% cover, respectively. Total forb cover averages 13% and is dominated by Horkelia sericata (11% cover).
Comm #5143	Purshia tridentata / Carex pensylvanica - Achnatherum occidentale Shrub Herbaceous Vegetation » more details accession code: VB.CC.32751.CEGL001492	Western Ecology Working Group of...	0	This rare shrubland was described from 5 good condition plots on flat, stream terraces, floodplains and dry drainages along the eastern side of the Cascades in southern Oregon. Elevations are between 1340 and 1650 m. All known sites are from the Winema National Forest, and much of the habitat has been damaged by overuse by cattle. The soils are deep, alluvial sands deposited over Mazama ash and pumice. <i>Purshia tridentata</i> is the dominant shrub, always present between 5 and 20% cover. In poor condition stands <i>Ericameria bloomeri (= Haplopappus bloomeri)</i> or <i>Ericameria nauseosa (= Chrysothamnus nauseosus)</i> are more important. <i>Achnatherum occidentale (= Stipa occidentalis)</i> and <i>Carex pensylvanica</i> are codominant on good condition stands, although with grazing <i>Elymus elymoides</i> increases. Other forbs include <i>Packera cana (= Senecio canus), Eriogonum umbellatum, Phacelia hastata</i>, and <i>Cistanthe umbellata (= Spraguea umbellata)</i>. This type is easily distinguished by the dominants, and its occurrence on alluvial sands on pumice.
Comm #5144	Liriodendron tulipifera - Pinus strobus - (Tsuga canadensis) / Carpinus caroliniana / Amphicarpaea bracteata Forest » more details accession code: VB.CC.23980.LIRIODENDRONTUL	Southeastern Ecology Working Gro...	0	Small streambottom forests of the shale lowlands of Virginia's Ridge and Valley and parts of the northern Blue Ridge. Canopy of various mixtures of Tsuga canadensis, Pinus strobus, Quercus alba. Extremely diverse herbaceous stratum, with a mixture of wetland and upland species.
Comm #5145	CEGL003917 » more details accession code: VB.CC.5739.CEGL003917 NOT CURRENTLY ACCEPTED	EcoArt 2002	0
Comm #5146	CEGL003918 » more details accession code: VB.CC.5740.CEGL003918 NOT CURRENTLY ACCEPTED	EcoArt 2002	0
Comm #5147	Purshia tridentata / Hesperostipa comata Shrub Herbaceous Vegetation » more details accession code: VB.CC.32743.CEGL001498	Western Ecology Working Group of...	0	This plant association is known from the Intermountain West, from western Idaho, eastern Washington, Oregon, and southern Utah. The association occurs on gently sloped sand to well-drained silty clay loams located from 152 to 2649 m (500-8691 feet) elevation. Dispersed <i>Purshia tridentata</i> forms an open shrub canopy (with an average 20% canopy cover) over an herbaceous layer dominated by <i>Hesperostipa comata (= Stipa comata)</i> (averaging &gt;50% cover). <i>Ericameria nauseosa (= Chrysothamnus nauseosus)</i> and <i>Chrysothamnus viscidiflorus</i> are occasionally present and increase in cover with disturbance. <i>Poa secunda</i> is usually also present in the understory and occurs with 20-50% cover. Additional bunchgrasses, <i>Poa secunda</i> and <i>Poa fendleriana</i>, also may occur in the graminoid layer, with 20-50% cover. Other abundant perennial grasses may include <i>Achnatherum hymenoides (= Oryzopsis hymenoides), Koeleria macrantha</i>, and <i>Elymus lanceolatus</i>. The perennial forb layer may include <i>Lithophragma glabrum, Leptodactylon pungens, Chenopodium atrovirens, Chenopodium leptophyllum</i>, and <i>Potentilla crinita</i>. A cryptogamic layer is well-developed in the most undisturbed stands.
Comm #5148	Festuca idahoensis - Symphoricarpos albus Herbaceous Vegetation » more details accession code: VB.CC.33852.CEGL001509	Western Ecology Working Group of...	0	This grassland association is found in southeastern Washington, and possibly occurs in Idaho and Oregon. Stands typically occur above 1300 m elevation on steep slopes where moisture is available well into summer drought because of cool aspect or subsurface seepage. Soils are generally derived from loess. Forested stringer communities are often in close proximity. <i>Festuca idahoensis</i> dominates the association, masking the low <i>Symphoricarpos albus</i>. Other bunchgrasses which occur may include <i>Pseudoroegneria spicata (= Agropyron spicatum), Koeleria macrantha</i>, and <i>Poa secunda (= Poa sandbergii)</i>. The bunchgrasses usually dominate 4:1 over the <i>Symphoricarpos albus</i>. Other associates may include <i>Bromus briziformis, Balsamorhiza sagittata, Lupinus sericeus, Lupinus</i> sp., <i>Achillea millefolium, Lithospermum ruderale</i>, and <i>Clarkia pulchella</i>.
Comm #5149	Hawai'i Montane-Subalpine Dry Grassland » more details accession code: urn:lsid:ecoobs.vegbank.org:commConcept:9049-{CA95A91E-C4F9-4E06-888E-C45044DFF61A}	Comer et al. 2003	0
Comm #5150	Artemisia nova / Festuca idahoensis Shrub Herbaceous Vegetation » more details accession code: VB.CC.34325.CEGL001524	Western Ecology Working Group of...	0	This shrub herbaceous association has been documented from only two drainages in Idaho, one in the southwest (Owyhee Uplands Section (342C), the other in the Little Lost River valley (Beaverhead Mountains Section, M332E), though it might be more extensive. There is no confirmation of this type occurring in Montana despite extensive searches within M332E. It is associated with limestone or dolomite-like parent materials that weather to shallow, well-drained and highly calcareous soils; information regarding its landscape setting and other abiotic param is lacking. <i>Artemisia nova</i> is the dominant shrub component and <i>Pseudoroegneria spicata</i> is the dominant grass; <i>Festuca idahoensis</i> cover is sufficiently high to indicate a more mesic moisture regime and distinguishes this association from the much more common ~<i>Artemisia nova / Pseudoroegneria spicata</i> Shrubland (CEGL001424)$$.