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Reference
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Description |
Comm #5841
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Vallisneria americana East Gulf Coastal Plain Aquatic Vegetation
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accession code: urn:lsid:vegbank.org:commConcept:36470-{14E915A5-B618-46EC-A767-356255B57B9E}
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NatureServe Biotics 2019 |
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This broadly defined type represents vegetation dominated by the nominal species for the states and ecoregions given. |
Comm #5842
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Fagus grandifolia / Smilax rotundifolia Forest
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accession code: VB.CC.18154.FAGUSGRANDIFOLI
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Eastern Ecology Working Group of... |
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This maritime forest community is currently described from north-facing exposed bluffs and the back portions of rolling dunes on Long Island. The community is dominated by Fagus grandifolia. Quercus velutina and Acer rubrum can be present at low densities. Canopy trees exhibit a stunted, multi-stemmed growth form from wind and salt spray; trees are notably taller in more protected dune slacks. A shrub layer is sparse to absent. Vines and herbs such as Aralia nudicaulis, Epifagus virginiana, and Smilax rotundifolia form a sparse ground layer, and moss cover is variable. Soils are well-drained fine sands. This community occurs only in Long Island, New York. |
Comm #5843
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Adenostoma fasciculatum - Ceanothus cuneatus Sierran Chaparral Shrubland
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accession code: VB.CC.34714.CEGL003468
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Western Ecology Working Group of... |
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This chaparral shrubland is known from central and southern California Coast Ranges and the Sierra Nevada foothills, including Yosemite National Park. It occurs between 243 and 1364 m (797-4474 feet) elevation on middle to upper slopes that are gentle to steep. Soils may be clay, clay loam, silt or silt loam, but most sampled plots were located on sandy loam. <i>Adenostoma fasciculatum</i> and <i>Ceanothus cuneatus</i> codominate. Other shrubs can be present and include <i>Cercocarpus montanus var. glaber (= Cercocarpus betuloides)</i> and <i>Arctostaphylos pungens</i>. A variety of native and non-native herbs occupy the understory, such as <i>Marah fabaceus, Aira caryophyllea, Hypochaeris glabra, Bromus rubens (= Bromus madritensis ssp. rubens)</i>, and <i>Vulpia myuros</i>. |
Comm #5844
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CEGL001807
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accession code: VB.CC.4362.CEGL001807
NOT CURRENTLY ACCEPTED
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EcoArt 2002 |
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Comm #5845
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Darlingtonia californica Saturated Herbaceous Alliance
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accession code: VB.CC.25221.DARLINGTONIACAL
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Western Ecology Working Group of... |
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This alliance occurs at low to moderate elevations (0-1400 m) of the central Pacific ranges, in regions of heavy precipitation (100-250 cm/year) and/or groundwater seepage. These sites remain moist or wet throughout the year and may have substantial Sphagnum accumulation. They may be bogs in the true sense, with moisture primarily from rainfall, or more commonly they are seeps or fens maintained by groundwater discharge. Soils are highly acidic and often composed of ultrabasic parent materials. The acidity and nutrient-poor substrates produce severe nitrogen-deficiency which favors insectivorous plants. This alliance is characterized by an herbaceous canopy of Darlingtonia californica, a carnivorous plant which usually forms clonal populations. A shorter herbaceous layer is usually dominated by forbs and graminoids which tolerate saturated, nutrient-poor soils, including Carex spp., Cypripedium californicum, Rudbeckia californica, and Parnassia palustris. Other carnivorous plants can be common, such as Drosera rotundifolia. There are occasional scattered emergent trees or shrubs, including Rhododendron occidentale, Ledum glandulosum, and Chamaecyparis lawsoniana. Sphagnum spp. may form a thick moss layer on the ground surface. These communities are usually surrounded by Pseudotsuga - Tsuga - Picea forest in coastal areas and Abies - Pinus - Calocedrus-mixed conifer forest in the Sierra Nevada. |
Comm #5846
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Rubus spectabilis Wet Shrubland
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accession code: VB.CC.37542.CEGL003472
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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. This association occurs on gentle slopes on the margins of wetlands. Soils range from coarse, loamy sands derived from granite to medium clay loam derived from marine sediments. Stands occur on the Point Reyes Peninsula along low drainages, seeps, and swales usually within 1-2 km of the coast. Stands are most often adjacent to stands of <i>Salix lasiolepis, Carex obnupta, Scirpus microcarpus</i>, and <i>Juncus effusus var. brunneus</i>. This association includes stands dominated by <i>Rubus spectabilis</i> with <i>Stachys ajugoides, Heracleum maximum</i>, and a variety of other mesophilic to hydrophilic herbs dominating the understory. The herbaceous layer is typically open, while the shrub canopy is continuous. Other species may include <i>Urtica dioica, Juncus effusus var. brunneus</i>, and <i>Oenanthe sarmentosa</i>. <i>Rubus spectabilis</i> forms dense clonal thickets along seeps, ponds, lagoons, and creeks in the foggy coastal strip of the area. Species composition may vary with some species such as <i>Scirpus microcarpus</i> and <i>Lonicera involucrata</i> codominant in certain areas. Stands are usually small, but may range up to 2.5 ha. |
Comm #5847
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Salix boothii / Maianthemum stellatum Shrubland
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accession code: VB.CC.20746.SALIXBOOTHIIMAI
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Western Ecology Working Group of... |
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This riparian shrubland is found in the mountains of western Wyoming and eastern Idaho at elevations of 1830 to 2650 m (6000-8700 feet). Stands generally grow on gently sloping streamside benches and less often on steep toeslopes near seeps on slumps. Soils are mineral, mostly of fine-loamy to coarse-loamy texture. The vegetation consists of a tall-shrub layer of Salix boothii or Salix drummondiana. A lower shrub layer of Lonicera involucrata and Ribes inerme may be present. The undergrowth is composed primarily of forbs, the most common of which are Maianthemum stellatum, Heracleum maximum, Mertensia ciliata, Thalictrum occidentale, Thalictrum fendleri, Galium triflorum, and Angelica spp. |
Comm #5848
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Poa palustris Semi-natural Seasonally Flooded Herbaceous Alliance
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accession code: VB.CC.28457.POAPALUSTRISSEM
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Western Ecology Working Group of... |
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This alliance includes grasslands dominated by an introduced perennial sod grass native to Europe. Stands have been described from Montana and South Dakota, but the alliances is likely more widespread. Sites include more mesic areas such as riparian floodplains and seasonally flooded wetlands. Soils are alluvial. |
Comm #5849
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CEGL000010
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accession code: VB.CC.2638.CEGL000010
NOT CURRENTLY ACCEPTED
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EcoArt 2002 |
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Comm #5850
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Juniperus virginiana / Schizachyrium scoparium - (Andropogon gerardii, Sorghastrum nutans) - Silphium (trifoliatum, terebinthinaceum) Wooded Herbaceous Vegetation
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accession code: VB.CC.36159.CEGL004738
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Southeastern Ecology Working Gro... |
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These red-cedar / little bluestem limestone barrens have been observed on Silurian exposures of Decatur and Perry counties, Tennessee (Western Highland Rim in the Western Valley of the Tennessee River) and Mississippian exposures of the Moulton Valley of Colbert and Franklin counties of northern Alabama. The Tennessee examples occur on slopes of Silurian geology, of the Brownsport, Dixon, and Beech River formations. Two phases of this vegetation have been observed. Areas presumably of deeper soil are dominated by <i>Andropogon gerardii, Sorghastrum nutans</i>, and <i>Schizachyrium scoparium</i>. Other forbs dominant to present in this phase include <i>Liatris aspera, Silphium terebinthinaceum, Silphium trifoliatum var. latifolium</i>, and <i>Brickellia eupatorioides</i>. This vegetation covers extensive areas at one site, where very old, gnarled <i>Juniperus virginiana var. virginiana</i> are present at a cover of 15-20%, Mortality and/or morbidity caused by drought maintains the tree cover at below 20% even in fire-suppressed examples. This phase grades into areas of shallower soil with a sparser grass cover (about 50%), composed primarily of <i>Schizachyrium scoparium</i>. Also present in this more common <i>Schizachyrium</i>-dominated phase are <i>Liatris cylindracea, Physostegia virginiana ssp. praemorsa, Ruellia humilis</i>, annual <i>Sporobolus</i> sp., <i>Symphyotrichum concolor (= Aster concolor), Symphyotrichum shortii (= Aster shortii)</i>, and <i>Heliotropium tenellum</i>. Up to 50% of the ground surface in the drier phase may be covered by red or gray fossiliferous gravel in the Tennessee examples, or by shaly, "marly" limestone fragments in Moulton Valley, Alabama, ones. State rare plants in Tennessee examples (disjunct from farther west) include <i>Liatris cylindracea, Symphyotrichum pratense (= Aster pratensis)</i> and <i>Salvia azurea var. grandiflora</i>. Alabama examples (but not Tennessee ones as far as known) may contain the globally rare <i>Eriogonum longifolium var. harperi</i>, and may locally grade down into small seepages with <i>Schoenolirion croceum</i> [see ~<i>Eleocharis (bifida, compressa) - Schoenolirion croceum - Carex crawei - Allium cernuum</i> Herbaceous Vegetation (CEGL004169)$$]. The Tennessee sites are among the most extensive areas of Silurian surface geology in the unglaciated continental United States. |
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