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Add/Drop	Name	Reference	Plots↓	Description
Comm #11371	Abies lasiocarpa - Picea engelmannii / Salix drummondiana Forest » more details accession code: VB.CC.31928.CEGL000327	Western Ecology Working Group of...	0	This heavily forested spruce-fir riparian association occurs in the San Juan Mountains and southern Rocky Mountains in Colorado. It occurs along steep, narrow first-order streams above 2700 m (9000 feet) elevation where <i>Abies lasiocarpa - Picea engelmannii</i> forests also occur on adjacent hillslopes. Soils are typically shallow (<1 m deep) sandy loams to sandy clay loams packed between large angular boulders and cobbles with a thin layer of partially decomposed organic matter under the litter layer. The canopy can be dense, with up to 90% cover of <i>Abies lasiocarpa</i> and <i>Picea engelmannii</i>. Occasional canopy associates can include <i>Picea pungens</i> at wet, low-elevation sites and <i>Pinus contorta</i> in drier, early-seral stands. <i>Populus tremuloides</i> may also occur sporadically. Tall <i>Salix drummondiana</i> and <i>Alnus incana</i> grow in a thick band along the edge of the stream depending on elevation; at higher elevations, <i>Salix drummondiana</i> is dominant and <i>Alnus incana</i> is rare, whereas at lower elevations, <i>Alnus incana</i> is more abundant than <i>Salix drummondiana</i>, but at mid elevations, the two shrubs can be codominant. Shrub associates that occur with less frequency include <i>Cornus sericea, Salix brachycarpa, Salix planifolia, Salix monticola, Salix bebbiana</i>, and <i>Lonicera involucrata</i>. The herbaceous layer is diverse and dominated by forbs; species can include <i>Heracleum maximum, Mertensia ciliata, Senecio triangularis</i>, and <i>Streptopus amplexifolius var. chalazatus</i>, among many others.
Comm #11372	Pseudotsuga menziesii - Arbutus menziesii / Gaultheria shallon Forest » more details accession code: VB.CC.33002.CEGL000421	Western Ecology Working Group of...	0	This association occurs primarily at low elevations in British Columbia, Washington, and Oregon in the Georgia Basin, the Puget Lowland, and in low hills of the Klamath Mountains. It may also extend into northwestern California. This is typically a mixed evergreen needle-leaved-evergreen broad-leaved forest dominated by <i>Pseudotsuga menziesii</i> and <i>Arbutus menziesii</i>. The understory is dominated by the evergreen broad-leaved shrub <i>Gaultheria shallon</i>, very locally codominated by <i>Vaccinium ovatum</i>. The taller deciduous shrubs <i>Holodiscus discolor</i> or <i>Corylus cornuta</i> are often abundant as well. Other frequent species are <i>Polystichum munitum, Pteridium aquilinum, Mahonia nervosa</i>, and <i>Rubus ursinus</i>. Herbaceous species are typically found in small amounts. This association occurs on dry sites, either due to aspect and slope, or shallow soils. This association is distinguished from similar ones by >20% cover of <i>Arbutus menziesii</i> and >10% cover of <i>Gaultheria shallon</i>, combined with <10% cover of <i>Tsuga heterophylla, Thuja plicata</i>, and <i>Polystichum munitum</i>.
Comm #11373	CEGL002943 » more details accession code: VB.CC.5183.CEGL002943 NOT CURRENTLY ACCEPTED	EcoArt 2002	0
Comm #11374	Pseudotsuga menziesii / Arctostaphylos patula Woodland » more details accession code: VB.CC.31805.CEGL000423	Western Ecology Working Group of...	0	This minor woodland association has been reported from the mountains and plateaus of southern Utah. Elevation ranges from 1829-2653 m (6000-8700 feet). Sites are steep mid to lower slopes, often with eastern, northern or western aspects. Soils are typically loam or sandy loam. Parent materials are usually sandstone or limestone. This association is characterized by a typically open tree canopy (about 30% cover) that is dominated or codominated by <i>Pseudotsuga menziesii</i>, usually with <i>Pinus ponderosa</i> present to codominant. Scattered <i>Pinus flexilis</i> and <i>Juniperus scopulorum</i> trees may also be present. <i>Arctostaphylos patula</i> dominates the moderate to sparse shrub layer with <i>Mahonia repens</i> a common associate. Others shrub species present may include <i>Acer glabrum, Amelanchier utahensis, Ceanothus</i> spp., <i>Cercocarpus ledifolius, Cercocarpus montanus, Purshia tridentata, Quercus gambelii</i>, and <i>Symphoricarpos oreophilus</i>. The sparse herbaceous layer (<20% cover) is primarily composed of graminoids, such as <i>Carex rossii, Achnatherum hymenoides (= Oryzopsis hymenoides), Elymus elymoides, Leymus salinus, Poa fendleriana</i>, and <i>Pseudoroegneria spicata</i>. Forbs are sparse and may include <i>Achillea millefolium, Astragalus miser, Clematis columbiana, Eriogonum racemosum</i>, and <i>Hymenoxys richardsonii</i>.
Comm #11375	Amelanchier alnifolia / Artemisia tridentata / Festuca idahoensis Shrubland » more details accession code: VB.CC.34204.CEGL001064	Western Ecology Working Group of...	0
Comm #11376	Liquidambar styraciflua - Quercus (alba, falcata) Ruderal Forest » more details accession code: VB.CC.35711.CEGL007217	Southeastern Ecology Working Gro...	0	Stands of this successional forest association are dominated by <i>Liquidambar styraciflua</i> but also support additional species in the overstory such as <i>Quercus alba</i>, <i>Liriodendron tulipifera</i>, and/or <i>Quercus falcata</i>. This forest is somewhat later successional and/or more diverse than pure <i>Liquidambar styraciflua</i> forests [see ~<i>Liquidambar styraciflua </i>Semi-natural Forest (CEGL007216)$$]. This type may arise following disturbance of mixed <i>Quercus - Carya</i> forests. This vegetation type would be more prevalent or more likely to be encountered to the north of the range of <i>Quercus nigra</i>, i.e., in the interior and Piedmont rather than in the Coastal Plain.
Comm #11377	CEGL008304 » more details accession code: VB.CC.7645.CEGL008304	EcoArt 2002	0
Comm #11378	Pinus discolor / Muhlenbergia emersleyi Woodland » more details accession code: VB.CC.19156.PINUSDISCOLORMU	Western Ecology Working Group of...	0
Comm #11379	CEGL006116 » more details accession code: VB.CC.6673.CEGL006116 NOT CURRENTLY ACCEPTED	EcoArt 2002	0
Comm #11380	Uniola paniculata - (Panicum amarum) - Croton punctatus Herbaceous Vegetation » more details accession code: VB.CC.36446.CEGL002218	Barbour, M. G., M. Rejmanek, A. ...	0	This is a coastal beach or dune grassland community of the Gulf Coast of Texas. <i>Uniola paniculata</i> is typically dominant or codominant with <i>Croton punctatus, </i><i>Heterotheca subaxillaris</i>, and <i>Ipomoea imperati (= Ipomoea stolonifera)</i>. Associated species that may have high cover include <i>Chamaecrista fasciculata</i> and <i>Paspalum monostachyum</i>. This vegetation occupies excessively drained sands on partially stabilized dunes of the coastal barrier islands and patches of mainland Gulf shoreline. This vegetation grades into <i>Schizachyrium littorale (= Schizachyrium scoparium ssp. littorale) - Paspalum monostachyum</i>-dominated grasslands on the barrier flat.