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Add/Drop	Name	Reference	Plots↓	Description
Comm #11981	CEGL007670 » more details accession code: VB.CC.7279.CEGL007670	EcoArt 2002	0
Comm #11982	Dasiphora fruticosa ssp. floribunda / Clinopodium arkansanum - Argentina anserina - Primula mistassinica Sparse Vegetation » more details accession code: VB.CC.36983.CEGL002506	Midwestern Ecology Working Group...	0	This community occurs along Great Lakes shores of the United States and Canada where broad, flat, horizontally bedded limestone or dolostone are exposed along or near the shoreline. Limestone cobble may be present. These lakeshores are characterized by a zonal gradation of plant communities, changing in response to distance from the lake. The width of the zone varies with fluctuations in the Great Lakes water level. The splash/scrape zone, which averages 10 m in width, is very sparsely vegetated, with small pools of standing water. Plant species are typically found in protected bedrock cracks. Typical species in this zone include <i>Juncus balticus, Argentina anserina (= Potentilla anserina)</i>, and <i>Populus balsamifera</i>. The vegetated zone occurs more inland as soil accumulates in and adjacent to bedrock cracks. Vegetation is still patchy. Common species include <i>Clinopodium arkansanum (= Calamintha arkansana), Deschampsia caespitosa, Dasiphora fruticosa ssp. floribunda (= Pentaphylloides floribunda), Dichanthelium acuminatum var. lindheimeri (= Panicum lindheimeri)</i>, and species from the previous zone. A variety of mosses, including <i>Campylium stellatum</i>, are common throughout this zone. Further inland, sand accumulations or cobble ridges on the bedrock surface provide a suitable substrate for the establishment of woody and herbaceous plants. Scattered trees and shrubs are common, including <i>Abies balsamea, Picea glauca, Populus balsamifera</i>, and <i>Thuja occidentalis</i>.
Comm #11983	Quercus alba / Acer leucoderme - Ostrya virginiana / Solidago auriculata Forest » more details accession code: VB.CC.24722.QUERCUSALBAACER	Southeastern Ecology Working Gro...	0	This Quercus alba-dominated forest occurs on steep, moist slopes, over slightly calcareous or subcalcareous substrates west of the Mississippi River. The subcanopy is characterized by high levels of Acer leucoderme and Ostrya virginiana. Diagnostic herbaceous species include Spigelia marilandica and Solidago auriculata. Both the subcanopy and herbaceous species listed above are believed to indicate the rich nutrient or high pH and moisture status of this community.
Comm #11984	CEGL001216 » more details accession code: VB.CC.3810.CEGL001216 NOT CURRENTLY ACCEPTED	EcoArt 2002	0
Comm #11985	Cyrilla racemiflora Seasonally Flooded Shrubland Alliance » more details accession code: VB.CC.17787.CYRILLARACEMIFL	Southeastern Ecology Working Gro...	0	This alliance consists of seasonally flooded Coastal Plain ponds dominated by Cyrilla racemiflora. Flooding is seasonal, with aquatic herbs (such as Utricularia purpurea) present during periods of surface water, and non-aquatic species becoming dominant in periods of exposed soil (especially late in the growing season).
Comm #11986	V.A.5.N.c » more details accession code: VB.CC.587.VA5NC	EcoArt 2002	0
Comm #11987	Sandstone Bedrock Great Lakes Shore Sparse Vegetation » more details accession code: VB.CC.36819.CEGL002507	Midwestern Ecology Working Group...	0	This sparsely vegetated sandstone bedrock rocky shore community is found on the shores of Lake Superior in the United States and Canada. They occur as small inclusions within areas of the larger sandstone cliff communities. Narrow areas of pavement occur at less than a meter above the lake levels and are generally moist. Mosses, liverworts, and scattered vascular plants may be found. Vascular plants on the pavement are concentrated in cracks in the rock, whereas mosses and liverworts are found where seepages flow across the rock. Some of the more common vascular plants include <i>Achillea millefolium, Chamerion angustifolium (= Epilobium angustifolium), Betula papyrifera, Campanula rotundifolia, Cystopteris fragilis, Deschampsia caespitosa, Phegopteris connectilis (= Thelypteris phegopteris), Alnus incana, Equisetum arvense</i>, and <i>Euthamia graminifolia</i>. Less common, and more restricted to cracks in the pavement, are <i>Sibbaldiopsis tridentata (= Potentilla tridentata), Lobelia kalmii, Packera indecora (= Senecio indecorus), Packera paupercula (= Senecio pauperculus), Physocarpus opulifolius, Primula mistassinica, Trisetum spicatum</i>, and <i>Rubus pubescens</i>.
Comm #11988	A.1585 » more details accession code: VB.CC.1341.A1585	EcoArt 2002	0	Fern thickets on high elevation landslides and other disturbances, dominated or codominated by ~Sticherus bifidus$.
Comm #11989	Picea mariana - Populus tremuloides / Mixed Herbs Forest » more details accession code: VB.CC.37016.CEGL002516	Midwestern Ecology Working Group...	0	This black spruce - aspen forest community type is found in the boreal regions of east-central Canada. Stands occur on flat to gently sloping sites with fresh to moist mineral soils. Soil texture is most often coarse loam, but can be clay, silt, or sand. In Ontario, this community often occurs on calcareous soil. The tree layer is dominated by a moderately closed to closed canopy of mixed coniferous and deciduous species. <i>Populus tremuloides</i> is the only common deciduous tree, but scattered <i>Betula papyrifera</i> and <i>Populus balsamifera</i> are also found. <i>Picea mariana</i> is the most abundant coniferous species, and often the most abundant canopy species. <i>Abies balsamea, Picea glauca</i>, and <i>Pinus banksiana</i> are typical associated conifers. The shrub layer ranges from open to dense. Species found in this layer include <i>Diervilla lonicera, Ledum groenlandicum, Linnaea borealis, Rosa acicularis, Rubus pubescens, Vaccinium angustifolium</i>, and <i>Vaccinium myrtilloides</i>. The herbaceous layer has great diversity. <i>Aralia nudicaulis, Eurybia macrophylla (= Aster macrophyllus), Cornus canadensis, Coptis trifolia, Maianthemum canadense, Petasites frigidus, Trientalis borealis</i>, and <i>Viola renifolia</i> are common herbaceous species. Mosses also cover a substantial portion of the forest floor.
Comm #11990	Populus angustifolia / Artemisia tridentata ssp. vaseyana / Eriogonum umbellatum Dry Outwash Woodland » more details accession code: VB.CC.32024.CEGL002537	Western Ecology Working Group of...	0	This association is documented only from Grand Teton National Park, Wyoming, on the Snake River floodplain and along Pilgrim Creek. The riparian woodland occurs on the valley floor at elevations of 1970 and 2100 m (6455-6880 feet). The soils are well-drained sandy loams. It is a phreatophytic woodland with an overstory canopy of <i>Populus angustifolia</i> tapping into the alluvial water table, while surface is well-drained sandy loam with coarse alluvial cobbles. Consequently, the understory canopy is a mix of mesic riparian and upland species. The shrub layer is composed of <i>Artemisia tridentata, Amelanchier</i> spp., <i>Mahonia repens</i>, and <i>Symphoricarpos</i> spp. The herbaceous undergrowth is dominated by forbs, but some graminoid genera occur, including <i>Carex</i> and <i>Elymus</i>. <i>Eriogonum umbellatum</i> is the dominant forb. Other forbs present include <i>Achillea millefolium, Arabis</i> spp., <i>Collomia linearis, Lomatium ambiguum, Packera streptanthifolia</i>, and <i>Sedum lanceolatum</i>.