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Add/Drop	Name	Reference	Plots↓	Description
Comm #8151	Coleogyne ramosissima - Purshia stansburiana Shrubland » more details accession code: VB.CC.24884.COLEOGYNERAMOSI	Western Ecology Working Group of...	0
Comm #8152	Pinus contorta / Clintonia uniflora Forest » more details accession code: VB.CC.28028.PINUSCONTORTACL	Western Ecology Working Group of...	0	Broadly distributed throughout the northern Rocky Mountains and adjacent terrain, this large-patch to matrix seral lodgepole pine forest association occupies relatively moist (mesic) and warm to cool sites having free air drainage and lacking frost-pocket conditions. It occurs on slopes of all degrees of steepness and aspect orientation, though it is more likely to occur in predominantly collecting positions. At the dry extreme of its distribution it is more strongly associated with protected positions such as concave slopes, moist depressions in gently sloping plateau areas, stringers along perennial stream bottoms, toeslopes and northeastern aspects. In the north it ranges from 760 to 1585 m (450-5200 feet), whereas to the south it ranges from 1060 to 1710 m (3500-5600 feet). A wide variety of parent materials are represented including those as disparate as granite, limestone, and all manner of glacio-fluvial material. It is also routinely found on ash caps, ranging from 3 to 60 cm in depth. The soil textures are predominantly loams and silt loams; soils typically have less than 15% coarse-fragment content and are well-drained. This mesic, wholly seral association is characterized by Pinus contorta dominating the upper canopy. Other tree species do occur in the overstory but with much less cover, including the seral Larix occidentalis and Pinus monticola as well as those from warmer environments: Pinus ponderosa, Pseudotsuga menziesii, Thuja plicata, and Tsuga heterophylla, and those of colder environments: Abies lasiocarpa, Abies grandis, and Picea engelmannii. The shrub layer may be highly diverse with tall shrubs (e.g., Acer glabrum, Taxus brevifolia, Amelanchier alnifolia), short shrubs (Symphoricarpos albus, Paxistima myrsinites, Rubus parviflorus, Spiraea betulifolia), and dwarf-shrubs (e.g., Chimaphila umbellata, Linnaea borealis, Mahonia repens) abundantly represented. The graminoid component is inconspicuous. The cover of the diagnostic forbs Clintonia uniflora and Tiarella trifoliata is greatest when this type occurs in warmer environments, up to 30% canopy cover. In the colder environments cover of these diagnostics and all forbs is generally less. Other forbs of high constancy are Aralia nudicaulis, Adenocaulon bicolor, Coptis occidentalis, Cornus canadensis, Galium triflorum, Goodyera oblongifolia, Maianthemum stellatum, Osmorhiza berteroi (= Osmorhiza chilensis), Orthilia secunda (= Pyrola secunda), Thalictrum occidentale, Trillium ovatum, Viola glabella (or Viola canadensis), and Viola orbiculata.
Comm #8153	CEGL008656 » more details accession code: VB.CC.7950.CEGL008656 NOT CURRENTLY ACCEPTED	EcoArt 2002	0
Comm #8154	A.1913 » more details accession code: VB.CC.1614.A1913 NOT CURRENTLY ACCEPTED	EcoArt 2002	0	Shallow soil woodlands dominated by ~Fraxinus quadrangulata$, sometimes codominated by ~Juniperus virginiana var. virginiana$. These woodlands occur over calcareous rocks. Oaks do not dominate. Other canopy or subcanopy species present may include ~Celtis laevigata, Celtis occidentalis, Cercis canadensis, Ulmus alata$, or ~Ulmus serotina$. Some typical shrubs include ~Forestiera ligustrina, Frangula caroliniana, Hypericum frondosum, Rhus aromatica, Symphoricarpos orbiculatus$, and ~Viburnum rufidulum$. Some herbs which may be present include ~Minuartia patula (= Arenaria patula), Symphyotrichum shortii (= Aster shortii), Astranthium integrifolium, Commelina erecta var. angustifolia, Croton monanthogynus, Euphorbia dentata, Opuntia humifusa, Sedum pulchellum$, and ~Verbesina virginica$. Some vegetation placed here (e.g., ~~Juniperus virginiana var. virginiana - Fraxinus quadrangulata / Symphyotrichum oblongifolium - Panicum flexile - Sedum pulchellum$ Woodland (CEGL004271)$$) may in fact be a mosaic of an herbaceous phase with a prominent grass- or forb-dominated stratum and a more closed phase dominated by ~Juniperus virginiana$ and ~Fraxinus quadrangulata$.
Comm #8155	Pinus contorta / Symphoricarpos albus Forest » more details accession code: VB.CC.24966.PINUSCONTORTASY	Western Ecology Working Group of...	0
Comm #8156	CEGL000121 » more details accession code: VB.CC.2748.CEGL000121 NOT CURRENTLY ACCEPTED	EcoArt 2002	0
Comm #8157	Pedicularis contorta - Carex spectabilis Herbaceous Vegetation » more details accession code: VB.CC.17834.PEDICULARISCONT	Western Ecology Working Group of...	0
Comm #8158	Menodora spinescens Dwarf-shrubland [Placeholder] » more details accession code: VB.CC.17840.MENODORASPINESC	Western Ecology Working Group of...	0
Comm #8159	Atriplex canescens / Sporobolus wrightii Shrubland » more details accession code: VB.CC.17842.ATRIPLEXCANESCE	Western Ecology Working Group of...	0
Comm #8160	Atriplex canescens Shrubland Alliance » more details accession code: VB.CC.17843.ATRIPLEXCANESCE	Western Ecology Working Group of...	0	This alliance occurs primarily in arid and semi-arid areas of the southwestern U.S. from western Texas to southern and eastern California and into Chihuahua, Mexico. It is also found in the western Great Plains to the Great Basin from western Kansas, Colorado, and Wyoming to Utah, Nevada and eastern Oregon. Associations in this alliance vary throughout the range and occur in a variety of environmental settings. In western Texas, this alliance occupies alkaline flats, depressions among gypsum ridges, saline or sandy soils. Overall, shrublands in this alliance occur on lowland and upland sites with elevation ranging from 75 m below sea level to 2400 m. Lowland sites include alluvial flats, drainage terraces, playas, washes and interdune basins. Upland sites include bluffs and gentle to moderately steep, sandy or rocky slopes. Stands occur on all aspects. Soils are variable with depths ranging from shallow to moderately deep, and texture ranging from sand to loam to clay. The lowland sites may be moderately saline or alkaline. Stands typically have a sparse to moderately dense (10-60% cover) short-shrub canopy (approximately 1.5 m tall) that is dominated by the facultative deciduous, xeromorphic shrub Atriplex canescens, with bare ground usually dominating the ground surface. Associated shrubs may include Artemisia bigelovii, Artemisia tridentata, Ephedra viridis, Krascheninnikovia lanata, Purshia stansburiana (= Purshia mexicana var. stansburiana), Psorothamnus polydenius, Parthenium confertum, Sarcobatus vermiculatus, and species of Chrysothamnus, Ericameria, and Lycium. Dwarf-shrubs, such as Gutierrezia sarothrae or Eriogonum spp., may be common in some stands. The sparse to moderately dense graminoid layer (1-60% cover) is typically dominated by warm-season, medium-tall and short grasses. The species present depend on geographic range of the grasses and past land use. Species may include Bouteloua gracilis, Distichlis spicata, Elymus elymoides, Hesperostipa comata, Pleuraphis jamesii (= Hilaria jamesii), Achnatherum hymenoides (= Oryzopsis hymenoides), Muhlenbergia porteri, Scleropogon brevifolius, Pascopyrum smithii, and Sporobolus spp. Forb cover is generally sparse, but annual forbs such as Calycoseris parryi may be abundant in wet years. Common forbs include species of Sphaeralcea, Dalea, Cymopterus, Chenopodium, Kochia, Iva, Picradeniopsis, and Ratibida. Cacti from the genus Opuntia are associated species in some stands. Trees are typically not present, but occasionally scattered Juniperus spp. occur. Very little is known about the expression of this alliance in the Midwest.