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Add/Drop	Name	Reference	Plots↓	Description
Comm #8501	A.1015 » more details accession code: VB.CC.787.A1015 NOT CURRENTLY ACCEPTED	EcoArt 2002	0	This alliance, ranging from Arkansas, Louisiana and Texas, includes natural and successional saturated wetlands dominated by ~Baccharis halimifolia$. It includes associations in both coastal and interior settings on saline/calcareous soils with a saturated hydrology. Interior settings include saline/calcareous natural areas, as well as weedy saline old fields. Coastal settings include shrublands dominated by ~Baccharis halimifolia$ that invade old fields and saline and non-saline prairies in the absence of fire. In these settings, ~Spartina spartinae, Andropogon virginicus, Andropogon glomeratus, Setaria parviflora (= Setaria geniculata)$, and ~Solidago sempervirens$ are often present in the herb stratum. A natural saline prairie association, found on outcrops of saline material from inland salt domes, has a shrub stratum dominated by ~Baccharis halimifolia$ with ~Crataegus berberifolia$ and ~Sideroxylon lanuginosum$. The herb stratum includes ~Eleocharis$ sp., ~Tridens strictus, Euthamia leptocephala, Ptilimnium$ sp., ~Tradescantia occidentalis, Nothoscordum bivalve, Eupatorium serotinum, Polygonum aviculare, Atriplex cristata (= Atriplex pentandra)$, and ~Heliotropium curassavicum$.
Comm #8502	CEGL001694 » more details accession code: VB.CC.4258.CEGL001694 NOT CURRENTLY ACCEPTED	EcoArt 2002	0
Comm #8503	CEGL001930 » more details accession code: VB.CC.4484.CEGL001930 NOT CURRENTLY ACCEPTED	EcoArt 2002	0
Comm #8504	Muhlenbergia filiculmis Herbaceous Alliance » more details accession code: VB.CC.27411.MUHLENBERGIAFIL	Western Ecology Working Group of...	0	This alliance includes grasslands that occur at moderately high elevations (2500-2900 m) in broad, flat valley floors or on mesa tops in the central Colorado Rocky Mountains. The region has a semi-arid, continental climate. Average annual precipitation is low, <25 cm, with a summer peak in July and August. January is the coldest and driest month, and April is the month of greatest snow accumulation. The region is often subjected to strong northerly and westerly winds that can remove snow cover and subject plants to severe desiccation. Sites are level to moderately steep (to 10%) with south aspects, but are usually more mesic than the surrounding uplands. Rocks and boulders are common especially on the steeper slopes. Soils are generally dry, well-drained, shallow and coarse-textured. Parent materials include andesite and tuff. Stands described had 30-40% bare ground, 10-25% rock and 40-50% litter on the ground surface. Stands included in this montane grassland alliance have moderate canopy cover dominated by the medium-tall perennial sod grass Muhlenbergia filiculmis and the short sod grass Bouteloua gracilis. Other associated graminoids include perennial bunch grasses like Festuca arizonica, Koeleria macrantha, Muhlenbergia montana, Elymus elymoides, and the sedge Carex obtusata. The usually sparse forb cover may include species such as Hymenoxys richardsonii, Eriogonum umbellatum, Arenaria fendleri, Penstemon secundiflorus, and Castilleja integra. A sparse dwarf-shrub layer is often present, composed primarily of Artemisia frigida, Chrysothamnus spp. and Gutierrezia sarothrae. Lichens are typically relatively common. Total mean canopy cover, graminoid cover, forb cover, dwarf-shrub cover, and lichen cover were 31%, 20-23%, 4-7%, 4%, and 9-12%, respectively. These grasslands are often surrounded by montane and subalpine forest, or steep, dry grassy slopes dominated by Festuca arizonica.
Comm #8505	CEGL003799 » more details accession code: VB.CC.5649.CEGL003799	EcoArt 2002	0
Comm #8506	CEGL007466 » more details accession code: VB.CC.7142.CEGL007466 NOT CURRENTLY ACCEPTED	EcoArt 2002	0
Comm #8507	Taxodium ascendens / Woodwardia virginica Woodland » more details accession code: VB.CC.23382.TAXODIUMASCENDE	Southeastern Ecology Working Gro...	0	This open-structured savanna or woodland encompasses very acid, species-poor communities in which Taxodium ascendens dominates the open canopy. The subcanopy stratum is usually poorly developed. Nyssa biflora, Pinus taeda, Pinus serotina, Liquidambar styraciflua, and other wetland trees or shrubs may or may not be present. The shrub stratum is usually poorly developed as well, though scattered to moderately dense shrubs sometimes occur. Shrubs include Ilex amelanchier, Leucothoe racemosa, Cyrilla racemiflora, and Lyonia lucida. The herb stratum is dominated by Woodwardia virginica.
Comm #8508	CEGL000107 » more details accession code: VB.CC.2734.CEGL000107 NOT CURRENTLY ACCEPTED	EcoArt 2002	0
Comm #8509	CEGL000995 » more details accession code: VB.CC.3596.CEGL000995 NOT CURRENTLY ACCEPTED	EcoArt 2002	0
Comm #8510	Abies balsamea - (Betula papyrifera var. cordifolia) Forest » more details accession code: VB.CC.31406.CEGL006112	Eastern Ecology Working Group of...	0	These subalpine forests occur near treeline on mountains of the northeastern United States and adjacent Canada. They are found on upper mountain slopes and ridgetops (above 915 m [3000 feet]) where they are associated with high winds, cold temperatures and shallow, acidic soils with a strong organic component. They are usually coniferous, but in some cases <i>Betula papyrifera var. cordifolia</i> may be a long-term replacement after disturbance. Canopy coverage is usually 70-85%. The shrub layer is sparse where the canopy is closed, but disturbance-created patches that are frequent within this forest may have dense shrub cover. Dwarf-shrubs and herbs are sparse; the coverage of bryoids is variable. In the canopy, <i>Abies balsamea</i> is often dominant and may form pure stands; <i>Betula papyrifera var. cordifolia</i> and <i>Picea rubens</i> are common associates, usually of minor importance except for post-disturbance patches that may be strongly birch-dominated. Typically forms large patches between 1070 and 1370 m (3500-4500 feet), but may be almost matrix. The shrub layer is predominantly <i>Abies</i> seedlings with occasional <i>Sorbus americana, Alnus viridis, Viburnum nudum var. cassinoides</i>, and <i>Ledum groenlandicum</i>. Characteristic herbs include <i>Dryopteris campyloptera, Oxalis montana (= Oxalis acetosella), Maianthemum canadense, Clintonia borealis, Cornus canadensis, Coptis trifolia (= Coptis groenlandica), Solidago macrophylla</i>, and the clubmoss <i>Lycopodium annotinum</i>. Bryophytes include <i>Dicranum scoparium, Dicranum fuscescens, Polytrichum ohioense, Plagiothecium laetum, Bazzania trilobata</i>, and <i>Pleurozium schreberi</i>. These forests generally occur above montane spruce-fir forests and spruce-hardwood forests, and approach a matrix forest above 1220 m (4000 feet). Fir waves are a physiognomically unusual expression of this community.