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Add/Drop	Name	Reference	Plots↓	Description
Comm #12571	CEGL008049 » more details accession code: VB.CC.7584.CEGL008049 NOT CURRENTLY ACCEPTED	EcoArt 2002	0
Comm #12572	CEGL004967 » more details accession code: VB.CC.6373.CEGL004967 NOT CURRENTLY ACCEPTED	EcoArt 2002	0
Comm #12573	CEGL004968 » more details accession code: VB.CC.6374.CEGL004968 NOT CURRENTLY ACCEPTED	EcoArt 2002	0
Comm #12574	Acer saccharum - Tilia americana - Fraxinus americana / Ostrya virginiana / Geranium robertianum Woodland » more details accession code: VB.CC.22240.ACERSACCHARUMTI	Eastern Ecology Working Group of...	0	These open, circumneutral talus woodlands range from the Great Lakes to the Northern Appalachians and Lower New England regions. They occur on talus and colluvial slopes where soils are derived from circumneutral to calcareous bedrock, and often extend upslope onto ridges and low summits. The elevation range is from about 500 feet to 2000 feet with most occurrences below 1200 feet, and southerly exposure is common. Soils are thin, patchy, and dry. The hardwood canopy is very patchy, with open talus interspersed with wooded areas. Even the wooded areas generally have an open canopy, and canopy closure overall is usually less than 50%. Shrubs and herbs are scattered where soil is available; vines are unusually well represented. Herb cover may be locally extensive on stabilized areas. The bryoid layer is very minor, and varies from patches of lichens on the open talus to sparse mosses in wooded areas. The ground cover is boulder talus and deciduous litter. Canopy dominants are typically Acer saccharum and Quercus rubra, with the characteristic but usually subordinate species Ostrya virginiana, Fraxinus americana, and Tilia americana. Other canopy associates include Acer rubrum, Betula lenta, Betula papyrifera, Betula alleghaniensis, Juglans cinerea, and Ulmus rubra. Scattered and clumped shrubs include Cornus rugosa, Acer pensylvanicum, Acer spicatum, Rubus odoratus, Corylus cornuta, Viburnum acerifolium, Staphylea trifolia, and Ribes spp. Vines are locally abundant on talus and include Parthenocissus quinquefolia, Parthenocissus vitacea, Toxicodendron radicans, Clematis virginiana, Clematis occidentalis, Adlumia fungosa, Celastrus scandens, and Polygonum cilinode. Rich-site herbs indicative of these talus slopes include Asplenium platyneuron, Polystichum braunii, Aralia racemosa, Saxifraga virginiensis, Geranium robertianum, Arabis drummondii, Asarum canadense, Carex rosea, Carex sprengelii, Carex platyphylla, and Piptatherum racemosum (= Oryzopsis racemosa). Also present, and less restricted to circumneutral conditions, are Cystopteris bulbifera, Carex pensylvanica, Hepatica nobilis var. obtusa (= Hepatica americana), Dryopteris marginalis, Polypodium virginianum, and Athyrium filix-femina. This association is distinguished from other deciduous talus and low summit woodlands by the presence of enriched-site species such as Tilia americana and Juglans cinerea in the canopy, and the characteristic rich-site herb species listed above. However, sites do occur that are intermediate between this type and the more acidic oak - birch talus woodlands, Betula alleghaniensis - Quercus rubra / Polypodium virginianum Woodland (CEGL006320).
Comm #12575	Sarcobatus vermiculatus / Leymus cinereus Shrubland » more details accession code: VB.CC.22686.SARCOBATUSVERMI	Western Ecology Working Group of...	0	This shrubland is found in Montana and Oregon, and possibly Washington, California and Nevada. This type occurred historically in Idaho, but appears to be eliminated from that state. Stands often are found in a relatively narrow band on floodplains and toeslopes above drainages in semi-arid environments. The association has also been observed around lakes and playas in north-central Montana. Substrates are poorly drained, alkaline soils that are often saline. This vegetation has a moderately dense short-shrub canopy (25-50% cover) that is dominated by Sarcobatus vermiculatus. Other shrubs and dwarf-shrubs include Chrysothamnus viscidiflorus, Artemisia frigida and Gutierrezia sarothrae. The moderately dense herbaceous layer (20-50% cover) is dominated by perennial graminoids. Pascopyrum smithii and Leymus cinereus, the diagnostic grass, codominate with Pseudoroegneria spicata, Koeleria macrantha, Carex filifolia, and the introduced grass Poa pratensis. Scattered forbs include Symphyotrichum chilense (= Aster chilensis), Comandra umbellata, Iva axillaris, Tragopogon dubius, and Sphaeralcea coccinea. The cactus Opuntia polyacantha is typically present.
Comm #12576	CEGL000009 » more details accession code: VB.CC.2637.CEGL000009 NOT CURRENTLY ACCEPTED	EcoArt 2002	0
Comm #12577	Acacia koa / Metrosideros polymorpha - Cibotium spp. Montane Wet Forest » more details accession code: VB.CC.26208.ACACIAKOAMETROS	Western Ecology Working Group of...	0
Comm #12578	CEGL000936 » more details accession code: VB.CC.3538.CEGL000936 NOT CURRENTLY ACCEPTED	EcoArt 2002	0
Comm #12579	Populus balsamifera ssp. trichocarpa / Salix exigua Forest » more details accession code: VB.CC.23400.POPULUSBALSAMIF	Western Ecology Working Group of...	0	This association occurs on alluvial deposits along rivers and perennial streams in habitats which are seasonally flooded and saturated. It generally occurs in wider river valleys or terraces, with patches of Populus balsamifera ssp. trichocarpa dominating forest or woodland patches while Salix exigua dominates a continuous shrub canopy, <7 m in height. Few examples of this type occur in pristine condition, so most commonly Poa pratensis, Bromus tectorum, and Verbascum thapsus are widespread in this community. In a few remnants, the open understory can have Artemisia ludoviciana and Leymus cinereus along with some native forbs.
Comm #12580	Pseudotsuga menziesii / Vaccinium membranaceum / Xerophyllum tenax Forest » more details accession code: VB.CC.28322.PSEUDOTSUGAMENZ	Western Ecology Working Group of...	0	This large-patch to matrix type is manifested as both a seral and climax type from central Idaho north to northern Idaho, eastern Washington, western Montana and southwestern Alberta, and it very probably will be identified for British Columbia. As a climax type this association is most prominent in west-central and central Montana forests. This association's elevation range is rather broad, ranging from 1030 to 2015 m (3100-6600 feet). Virtually the whole of this appreciable elevation range can be realized in a given geographic area due to the type's presence as both a seral and late-successional type. It occupies primarily south- through west-facing, moderate to steep slopes and is usually found on midslope to slope-shoulder positions. It also occurs on benches associated with broad ridges. Soils are well-drained and derived from a broad spectrum of parent materials, including glacial till and drift, both calcareous and noncalcareous sedimentary types, intrusive and extrusive igneous rock and metamorphic types, particularly quartzite. Ground surfaces have little or no bare soil or rock exposed. The canopy structure ranges from moderately open to closed (>60% cover) with Pseudotsuga menziesii being the dominant canopy tree, often joined by lesser amounts of Larix occidentalis and Pinus contorta (sites are beyond the cold limits of Pinus ponderosa for the most part). At its mid to upper elevation limits Abies grandis, Abies lasiocarpa, and Picea engelmannii may be minor components of the overstory and major components of the subcanopy. A tall-shrub layer is absent and even scattered individuals are rare. The short-shrub layer dominates the undergrowth with Vaccinium membranaceum being dominant, often exceeding 50% canopy cover. Spiraea betulifolia, Lonicera utahensis, Paxistima myrsinites, Amelanchier alnifolia, and Rosa gymnocarpa are the other high-constancy species of this layer. Dwarf-shrub layer species that occur with consistence include only Vaccinium scoparium and Mahonia repens (= Berberis repens). The herbaceous layer is generally relatively depauperate with the diagnostic species Xerophyllum tenax being strongly dominant (average cover reported by various studies ranging from 25 to 61%). Only two graminoids occur consistently and are well-represented in cover, Calamagrostis rubescens and Carex geyeri. Other forbs with moderate to high constancy include Arnica cordifolia, Arnica latifolia, Chimaphila umbellata, Orthilia secunda (= Pyrola secunda), Thalictrum occidentale, and Viola orbiculata; not all of these forbs have high constancy throughout the range of the type.