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Name
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Reference
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Plots↓
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Description |
Comm #5661
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Salix wolfii / Mesic Forbs Shrubland
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accession code: VB.CC.18994.SALIXWOLFIIMESI
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Western Ecology Working Group of... |
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This plant association occurs from mid-montane to upper subalpine elevations 1890-3355 m (6200-11,000 feet) in Colorado, Idaho, western Wyoming, and Utah. It frequently covers wide, open, low-gradient areas near first- and second-order streams. It can be recognized by the generally dense layer of low-growing, silvery Salix wolfii dominating the short-shrub layer with a variety of mesic forbs and some graminoids in the undergrowth. Other willow species that may be present include Salix planifolia, Salix boothii, and Salix geyeriana. Total forb cover exceeds that of total graminoid cover. No single forb species is particularly more abundant than any other, and no one species is present in every stand. The forb species most commonly present include Caltha leptosepala, Mertensia ciliata, Senecio triangularis, Ligusticum porteri, Fragaria virginiana, Cardamine cordifolia, Geum macrophyllum, and Heracleum maximum. Graminoid species that may be present include Deschampsia caespitosa, Calamagrostis canadensis, and various Carex species. |
Comm #5662
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Dichanthelium (erectifolium, wrightianum) - Rhynchospora filifolia Seasonally Flooded Herbaceous Alliance
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accession code: VB.CC.18967.DICHANTHELIUMER
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Southeastern Ecology Working Gro... |
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Coastal Plain ponds of the southeastern Coastal Plain, characterized by Dichanthelium wrightianum, Dichanthelium erectifolium, and Rhynchospora filifolia. Other characteristic species include (variously in the several associations) Eleocharis tricostata, Rhynchospora nitens, Rhynchospora pleiantha, Centella erecta, Juncus abortivus, Juncus repens, Rhexia spp., Fuirena spp., and Panicum spp. Isolated individuals of various woody species may occur in some examples of this alliance, especially near their edges. |
Comm #5663
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Aquilegia canadensis - Asplenium x heteroresiliens Herbaceous Vegetation
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accession code: VB.CC.36354.CEGL004269
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Southeastern Ecology Working Gro... |
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This Atlantic Coastal Plain community consists of limestone outcrops 1-3 m high, occurring on lower slopes adjoining bottomlands, mostly to entirely shaded by trees rooted in deeper soils of adjoining forests, but with highly distinctive floristic composition. Shrubs and woody vines, such as <i>Decumaria barbara, Acer barbatum</i>, and the alien <i>Lonicera japonica</i>, are sometimes rooted in solution pockets in the top and sides of the outcrops and can be locally abundant. Herbaceous species include <i>Aquilegia canadensis, Asplenium x heteroresiliens, Asplenium platyneuron, Cystopteris tennesseensis, Arabis lyrata, Oxalis</i> sp., <i>Arenaria lanuginosa var. lanuginosa</i>, and <i>Carex basiantha</i>. Bryophytes are locally abundant, and include <i>Anomodon attenuatus, Conocephalum salebrosum (= Conocephalum conicum)</i>, and <i>Marchantia</i> sp. The lowermost portions of the outcrops are very rarely flooded by extreme flood events. |
Comm #5664
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CEGL002039
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accession code: VB.CC.4586.CEGL002039
NOT CURRENTLY ACCEPTED
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EcoArt 2002 |
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Comm #5665
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Eleocharis elongata - Panicum tenerum - Nymphaea odorata Herbaceous Vegetation
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accession code: VB.CC.36248.CEGL004961
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Southeastern Ecology Working Gro... |
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This association occurs in elongated interdune swales on coastal islands and peninsulas. Stands typically contain <i>Eleocharis elongata, Panicum tenerum</i>, and <i>Nymphaea odorata</i>. Other characteristic species include <i>Eleocharis equisetoides, Dichanthelium erectifolium, Rhynchospora tracyi</i>, and <i>Rhynchospora macrostachya</i>. Isolated individuals of woody species such as <i>Cephalanthus occidentalis, Nyssa biflora</i>, and <i>Ilex cassine</i> may occur in this community, especially near its edges. |
Comm #5666
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Amelanchier alnifolia / (Mixed Grass, Forb) Shrubland
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accession code: VB.CC.28138.AMELANCHIERALNI
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Western Ecology Working Group of... |
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This association is currently known only from Glacier National Park and Waterton Lakes National Park. It is found on moderate to steep slopes and flat benches. They are located at moderate elevations between 1300 and 1781 m (4262-5840 feet) predominately on southerly to easterly aspects. Soils tend to be moderately to well-drained sandy or clay loams or, occasionally, a rapidly drained Orthic Regosol. Sites are usually situated on glacial-fluvial or till deposits. Most of the ground surface is covered with litter and duff. This mixed-age shrubland is characterized by the presence of Amelanchier alnifolia, which occurs in all shrub canopy layers with 100% constancy and an average cover of 32%. Other shrubs include Symphoricarpos albus, Holodiscus discolor, Acer glabrum, Rubus parviflorus, and Spiraea betulifolia, with 10% average cover. Shrub height is variable due to heavy browsing or periodic avalanche disturbance, or both. The moderate to dense (70% average cover) herbaceous layer is diverse with over 100 species recorded in 23 stands. Common forb species include Fragaria virginiana, Achillea millefolium, and Galium boreale. Graminoids consist primarily of Carex geyeri and Calamagrostis rubescens; each has moderate constancy and an average cover of 14% and 24%, respectively. Other grasses present include both native and exotic species, such as Festuca idahoensis, Bromus carinatus, Poa pratensis, and Phleum pratense. All have 50% constancy or higher. Nonvascular cover is insignificant. |
Comm #5667
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Ludwigia grandiflora Herbaceous Vegetation
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accession code: VB.CC.35911.CEGL004288
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Southeastern Ecology Working Gro... |
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This vegetation is found in flats in the upper reaches of artificial impoundments. Stands are entirely dominated by monospecific patches of <i>Ludwigia grandiflora</i> (<i>sensu lato</i>) (= <i>Ludwigia uruguayensis</i> includes <i>Ludwigia hexapetala</i>). |
Comm #5668
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Betula occidentalis / Philadelphus lewisii Shrubland
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accession code: VB.CC.33940.CEGL002668
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Western Ecology Working Group of... |
0
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This is a riparian, bottomland association found on seasonal streams to third-order perennial streams, in small, U-shaped to V-shaped, valley bottoms. Occurrences occur at relatively low elevations in the mountains of eastern Oregon and adjacent Idaho. <i>Betula occidentalis</i> forms a low, patchy canopy along the stream, and occasionally spreads out throughout the floodplain with cover ranging from 60-90%. <i>Philadelphus lewisii</i> is found throughout the bottomland, creating shrub thickets with overall cover ranging from 20-40%. Other trees and tall shrubs are rare, but can include <i>Salix</i> species (<i>Salix lemmonii, Salix exigua, Salix geyeriana</i>, or <i>Salix lasiolepis), Cornus sericea</i>, or <i>Crataegus douglasii</i>. Low shrubs (<i>Rosa woodsii, Ribes aureum, Toxicodendron radicans</i>), and graminoids (<i>Elymus glaucus, Carex douglasii, Carex amplifolia, Juncus balticus</i>) dominate the understory, along with some non-native grasses and forbs (<i>Bromus tectorum, Poa pratensis, Verbascum thapsus</i> and <i>Solanum dulcamara</i>). |
Comm #5669
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Populus balsamifera ssp. trichocarpa - Acer macrophyllum / Symphoricarpos albus Forest
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accession code: VB.CC.32686.CEGL003363
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Western Ecology Working Group of... |
0
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Comm #5670
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Alnus viridis ssp. sinuata / Rubus (lasiococcus, parviflorus) Shrubland
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accession code: VB.CC.19154.ALNUSVIRIDISSSP
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Western Ecology Working Group of... |
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