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Add/Drop	Name	Reference	Plots↓	Description
Comm #12371	CEGL004127 » more details accession code: VB.CC.5841.CEGL004127 NOT CURRENTLY ACCEPTED	EcoArt 2002	0
Comm #12372	CEGL004128 » more details accession code: VB.CC.5842.CEGL004128 NOT CURRENTLY ACCEPTED	EcoArt 2002	0
Comm #12373	Alnus rubra / Acer circinatum / Claytonia sibirica Forest » more details accession code: VB.CC.34298.CEGL003298	Western Ecology Working Group of...	0
Comm #12374	Pinus contorta (var. latifolia, var. murrayana) / Vaccinium uliginosum Forest » more details accession code: VB.CC.21490.PINUSCONTORTAVA	Western Ecology Working Group of...	0
Comm #12375	A.702 » more details accession code: VB.CC.2334.A702 NOT CURRENTLY ACCEPTED	EcoArt 2002	0
Comm #12376	CEGL000574 » more details accession code: VB.CC.3183.CEGL000574 NOT CURRENTLY ACCEPTED	EcoArt 2002	0
Comm #12377	Populus fremontii / Ericameria nauseosa Woodland » more details accession code: VB.CC.31116.CEGL002465	Western Ecology Working Group of...	0	This common woodland association occurs on the high terraces of perennial streams and on the banks of intermittent washes throughout the Colorado Plateau on sites that are rarely subject to flooding. Sites are level to gently sloping and are located between 1165 and 2165 m (3825-7100 feet) elevation. Soils are poorly developed, well-drained sands and loamy sands derived from alluvium. Total vegetation cover ranges from 34 to 170%. The 10- to 15-m tall canopy is dominated by mature <i>Populus fremontii</i> trees that range in cover from 5 to 50%. Other trees, both riparian and upland, may be present with low cover in the canopy and subcanopy, including <i>Populus angustifolia, Salix gooddingii</i>, and <i>Juniperus osteosperma</i>. Young <i>Populus</i> and <i>Salix</i> are rare, because these stands are often at least 2 m above the water table. The shrub layer is low to moderate in terms of species composition and cover. <i>Ericameria nauseosa</i> dominates or codominates the stratum, often with <i>Artemisia tridentata ssp. tridentata</i>. Other shrubs may be scattered through the stand, including <i>Rhus trilobata, Sarcobatus vermiculatus, Opuntia</i> spp., <i>Forestiera pubescens, Atriplex canescens</i>, and <i>Fraxinus anomala</i>. The exotic <i>Tamarix chinensis</i> may also be present. The herbaceous layer is diverse in terms of species composition, although many species are exotic and most reflect upland conditions. Common graminoids include <i>Achnatherum hymenoides, Agrostis stolonifera, Bromus tectorum, Bromus japonicus, Elymus canadensis, Sporobolus</i> spp., and <i>Juncus balticus</i>. Forbs commonly present include <i>Ambrosia acanthicarpa, Artemisia campestris, Castilleja linariifolia, Equisetum hyemale, Lepidium montanum, Sphaeralcea</i> spp., and <i>Heterotheca villosa</i>.
Comm #12378	Allenrolfea occidentalis Shrubland Alliance » more details accession code: VB.CC.23347.ALLENROLFEAOCCI	Western Ecology Working Group of...	0	This alliance includes vegetation dominated by Allenrolfea occidentalis, occurring in alkaline flats, along the margins of salt lakes, in depressions among gypsum ridges, and near saline streams. The nominal species can cover large acreages, with little else except barren soil. Associated species in western Texas occurrences include Suaeda suffrutescens var. detonsa, Sporobolus airoides, Sporobolus wrightii, Tamarix ramosissima, Atriplex canescens, and Distichlis spicata. In Utah, Allenrolfea occidentalis occurs with Atriplex gardneri. This alliance is known from saline habitats throughout the arid western United States, as far north as Oregon, and south into Mexico.
Comm #12379	Bouteloua breviseta Sparsely Vegetated Alliance » more details accession code: VB.CC.19827.BOUTELOUABREVIS	Southeastern Ecology Working Gro...	0	Sparsely vegetated, nearly barren gypsum deposits, with scattered gypsophiles, in the Trans-Pecos region of western Texas. This alliance is broadly defined at this time to include a variety of sparsely vegetated, poorly consolidated gypsum deposits with very sparse vegetation characterized by scattered clumps of Bouteloua breviseta with other gypsophiles, including Mentzelia spp., Sartwellia flaveriae, Anulocaulis spp.
Comm #12380	Populus tremuloides - Betula papyrifera / (Abies balsamea, Picea glauca) Forest » more details accession code: VB.CC.36852.CEGL002466	Midwestern Ecology Working Group...	0	This aspen - birch boreal hardwoods forest type is found in the boreal regions of the midwestern United States and in central Canada. Sites occupy a variety of topographic positions, including ridgetops and gentle to moderate upper, mid, and lower slopes. The soils are deep, well-drained to rapidly drained mineral soils (dry to mesic soils). Soil textures are usually clay loamy but can be silt or fine sand. This community is dominated by deciduous trees, with a moderate amount of conifers (<25%). The canopy is dominated by <i>Betula papyrifera</i> and <i>Populus tremuloides</i>, and occasionally <i>Populus grandidentata</i>. Conifer associates include <i>Abies balsamea</i> and <i>Picea glauca</i>, either in the canopy or, more characteristically, in the subcanopy. <i>Abies balsamea</i> and <i>Picea glauca</i> are abundant in the sapling layer. Common shrubs include <i>Acer spicatum, Corylus cornuta, Diervilla lonicera, Linnaea borealis, Lonicera canadensis, Rosa acicularis, Rubus pubescens, Sorbus decora</i>, and <i>Vaccinium myrtilloides</i>. The herbaceous stratum is sometimes dominated by <i>Eurybia macrophylla (= Aster macrophyllus)</i>, but can include a diversity of forbs, such as <i>Anemone quinquefolia, Aralia nudicaulis, Clintonia borealis, Cornus canadensis, Galium triflorum, Maianthemum canadense, Mitella nuda, Pteridium aquilinum, Streptopus lanceolatus var. longipes (= Streptopus roseus), Trientalis borealis</i>, and <i>Viola renifolia</i>. Mosses include <i>Plagiomnium cuspidatum, Pleurozium schreberi, Ptilium crista-castrensis</i>, and <i>Rhytidiadelphus triquetrus</i>. Diagnostic features of this type are the dominance by the combination of <i>Populus tremuloides</i> and <i>Betula papyrifera</i>, boreal conifer associates (but very little <i>Picea mariana</i> or <i>Pinus banksiana</i>), and lack of more southern hardwoods (such as <i>Acer saccharum</i>).