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Name
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Reference
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Plots↓
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Description |
Comm #6991
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A.1091
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accession code: VB.CC.862.A1091
NOT CURRENTLY ACCEPTED
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EcoArt 2002 |
0
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This alliance, found in the Great Lakes area, is a wetland dominated by herbs and shrubs. ~Chamaedaphne calyculata$ is typically the dominant short shrub. Herbaceous species present include ~Carex oligosperma, Calamagrostis canadensis, Calamagrostis stricta, Eleocharis$ spp., ~Phalaris arundinacea, Scirpus$ spp., ~Eriocaulon aquaticum$, and ~Juncus$ spp. ~Sphagnum$ spp. are common nonvascular species. Often species with Coastal Plain affinities are present in stands of this alliance, especially south of the tension zone. ^This alliance is located along lakeshores or in depressions. It always occurs on sandy glacial lakeplains and outwash plains. Soils range from loamy sand and peaty sand to peaty muck and are strongly acid to very strongly acid. The water level fluctuates seasonally and from year to year. |
Comm #6992
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A.1154
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accession code: VB.CC.928.A1154
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EcoArt 2002 |
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Montane meadows and landslide scars at upper elevations of the Luquillo Mountains of eastern Puerto Rico. Dominant graminoids are ~Isachne angustifolia$ and ~Scleria scindens (= Scleria canescens)$. Other species include ~Clibadium erosum$ and ~Phytolacca rivinoides$. |
Comm #6993
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CEGL006152
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accession code: VB.CC.6700.CEGL006152
NOT CURRENTLY ACCEPTED
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EcoArt 2002 |
0
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Comm #6994
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Salix wolfii / Deschampsia caespitosa Shrubland
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accession code: VB.CC.24478.SALIXWOLFIIDESC
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Western Ecology Working Group of... |
0
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This is a minor plant association with a widespread distribution including mid to upper elevations throughout the Rocky Mountains. The association is found in meadows, on lower toeslopes, and on benches or terraces in broad valley bottoms. Salix wolfii creates a dense, low overstory with Dasiphora fruticosa ssp. floribunda (= Potentilla fruticosa) frequently present. Deschampsia caespitosa is the diagnostic graminoid with up to 10% cover. A diverse mix of other graminoids and forbs are usually present, including Juncus balticus, Danthonia intermedia, Phleum alpinum, Potentilla gracilis, and Senecio integerrimus. |
Comm #6995
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Populus tremuloides Forest Alliance
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accession code: VB.CC.18005.POPULUSTREMULOI
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Western Ecology Working Group of... |
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Forests in this alliance are found on rolling topography such as the glacial moraines in Minnesota or the Turtle Mountains and Pembina Hills of North Dakota, often occurring between grasslands and other forest types. The soils are usually deep, well-developed, and loamy. Stands in this alliance often originate following disturbance. This alliance is widespread in the western United States, the northern Great Plains, and extends into the western Great Lakes area. The dominant species of the canopy is Populus tremuloides. In the midwestern United States, Quercus macrocarpa and Betula papyrifera are common associates and can even be codominant in some stands. The shrub layer can be made up of several shrubs common to the Great Plains, including Corylus cornuta, Corylus americana, Prunus virginiana, Symphoricarpos occidentalis, Amelanchier alnifolia, and Rubus spp. In wetter stands Cornus spp. and Salix spp. may also be present. The herbaceous layer may contain Aralia nudicaulis, Carex pensylvanica, Maianthemum canadense, Maianthemum stellatum, Viola spp., and Thalictrum dioicum. In the western United States common associates include Acer glabrum, Amelanchier alnifolia, Symphoricarpos oreophilus, Bromus carinatus, Calamagrostis rubescens, Thalictrum fendleri, Carex siccata (= Carex foenea), Carex geyeri, Carex rossii, and Hesperostipa comata (= Stipa comata). In the Dakotas and Wyoming, these stands may remain successionally stable for many dozens of years, while in the more mesic, eastern portion of the range, Populus tremuloides forests succeed to other community types much more quickly. Populus tremuloides (the species) reaches Texas, Virginia, and West Virginia, but it is unclear whether Populus tremuloides communities occur in any of these states. Stands of Populus tremuloides in the Trans-Pecos of western Texas occur in ravines and on open talus slopes above 2134 m (7000 feet) elevation; they may best be treated as Populus tremuloides communities, or merely as other communities with a component of aspen. Texas stands of Populus tremuloides are of limited extent and variable in structure. |
Comm #6996
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Callitriche heterophylla Herbaceous Vegetation
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accession code: VB.CC.34107.CEGL003301
NOT CURRENTLY ACCEPTED
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Western Ecology Working Group of... |
0
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From Christy (2004): This herbaceous vegetation occupies low-elevation (152-580 m [500-1900 feet]) shallow pools, ponds, slow-moving streams, and flooded shrub swamps from Oregon to Alaska and eastward. Soil is seasonally to perennially flooded organic or silty loam. <i>Fraxinus latifolia, Salix hookeriana, Salix lucida ssp. lasiandra, Salix sitchensis</i>, and <i>Spiraea douglasii</i> are typical associates in this habitat, but woody vegetation may also be entirely absent. <i>Callitriche heterophylla</i> is the primary species and is usually immersed with the topmost leaves floating on the surface of the water. Emergent species present may include <i>Oenanthe sarmentosa, Veronica scutellata, Cicuta douglasii, Torreyochloa pallida var. pauciflora</i>, and <i>Glyceria</i>. |
Comm #6997
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Corylus cornuta / Polystichum munitum Shrubland
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accession code: VB.CC.37543.CEGL003302
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This shrubland association is currently only known from Point Reyes National Seashore in California, and the following description is based on occurrences there. Additional information will be added as it becomes available. Stands of this association are found on moderate slopes with a northern to eastern exposure. This vegetation grows in the middle third of the slope on moderately coarse to fine sandy loams. Stands are typically in concave areas surrounded by stands of <i>Pseudotsuga menziesii</i>. Stands are small, usually under 3 ha. This vegetation is heavily dominated by <i>Corylus cornuta</i> forming a closed shrub canopy between 2-5 m in height, with individual emergent tall shrubs. <i>Marah fabaceus</i> and <i>Rubus ursinus</i> are common shrub associates. <i>Polystichum munitum</i> is present in the herbaceous and short-shrub layers at low cover values. Other common associates may include <i>Rubus parviflorus, Stachys ajugoides, Urtica dioica</i>, and/or <i>Elymus glaucus</i>. |
Comm #6998
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Amorpha fruticosa Tidal Shrubland
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accession code: VB.CC.27804.AMORPHAFRUTICOS
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Eastern Ecology Working Group of... |
0
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This freshwater tidal shrubland occurs on tidal rivers bordering the Chesapeake Bay on sandy levees and shorelines above mean high tide. Microtopography is variable, from pronounced hummock-and-hollow to essentially flat. Soils are well-drained sands and gravel to poorly drained peat in lower-lying depressions. The shrub canopy is relatively open and characterized by Amorpha fruticosa. Other associates may include Acer rubrum, Fraxinus pennsylvanica, Decodon verticillata, Ilex verticillata, and Rosa palustris. The herbaceous layer is diverse and comprised of a mixture of Osmunda regalis, Hibiscus moscheutos, Thelypteris palustris, Boehmeria cylindrica, Leersia oryzoides, Peltandra virginica, Polygonum sagittatum, Sium suave, and Typha angustifolia. |
Comm #6999
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Elodea canadensis Herbaceous Vegetation
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accession code: VB.CC.33789.CEGL003303
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Western Ecology Working Group of... |
0
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From Kunze (1994): This community type occurs throughout the gorge, overflow plain and surge plain segments of the Columbia River. It is submerged in shallow, flowing water and can occur in areas with freshwater tidal influence. It is restricted to mud and silt. This community type occurs as nearly monotypic stands of <i>Elodea canadensis</i>. <i>Potamogeton</i> spp. may also occur. |
Comm #7000
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Fontinalis antipyretica (var. antipyretica, var. oregonensis) Nonvascular Vegetation
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accession code: VB.CC.31889.CEGL003304
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Western Ecology Working Group of... |
0
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