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Name
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Reference
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Plots↓
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Description |
Comm #5511
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A.348
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accession code: VB.CC.1973.A348
NOT CURRENTLY ACCEPTED
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EcoArt 2002 |
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This alliance covers deciduous forested acid seeps, saturated swamp forests, and "basin swamps" of the eastern and southeastern United States. Forests in this alliance have variable canopy composition, but ~Acer rubrum$ and ~Nyssa sylvatica$ are common components. Canopy composition differs from the surrounding upland and varies with geography. Typical canopy species across the range of this alliance include ~Acer rubrum var. trilobum, Nyssa sylvatica$, and ~Liquidambar styraciflua$. Understory and shrub species include ~Alnus serrulata, Ilex opaca var. opaca, Photinia pyrifolia (= Aronia arbutifolia)$, and ~Ilex verticillata$. Characteristic herbaceous species are ~Osmunda cinnamomea$ and ~Osmunda regalis$. ~Sphagnum$ spp. are typical. These wetland forests occur where surface water is seldom present, but the substrate is saturated to the surface for extended periods during the growing season, and include forested acid seeps on hillsides or streamheads, on edges of floodplains, and other poorly drained depressions. Individual occurrences of these forests tend to be small in extent, and can provide habitat for rare plant species. |
Comm #5512
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Pinus tropicalis - Magnolia pallescens - Didymopanax tremulus Ruderal Forest
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accession code: urn:lsid:vegbank.org:commConcept:36460-{195A4F50-0358-4EA2-A8C1-116066924550}
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NatureServe Biotics 2019 |
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Mixed <i>Pinus tropicalis</i> forests, with strong admixture of broad-leaved trees such as <i>Magnolia pallescens, Didymopanax tremulus, Tabebuia vinosa, Brunellia comocladiifolia, Myrsine coriacea</i>, and <i>Trema micrantha</i>, on the yellowish acidic montane soils of eastern Cordillera Central (Hispaniola), between 1700 and 2100 m elevation. DISTRIBUTION: Hispaniola (Dominican Republic): south of Constanza. |
Comm #5513
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Eriogonum leptophyllum Sparse Vegetation
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accession code: VB.CC.31857.CEGL004013
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Western Ecology Working Group of... |
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This sparsely vegetated badland association occurs at Petrified Forest National Park in northern Arizona and likely occurs elsewhere in the southern Colorado Plateau. Elevations at the national park range from 1710 to 1770 m (5620-5810 feet). Stands are found on gentle to moderately steep slopes and range between 4 and 65%. This association occurs on various landforms, including lower slopes, sideslopes, midslopes, bajadas, slick rock, buttes, cliffs, and plateaus. Substrates are clays derived from shale. The ground surface has high cover of bare soil. A few stands have surface rocks with substrates including petrified wood, sandstone, and mudstone. The vegetation cover is characterized by generally sparse (<10%) total vegetation cover that ranges from 7-23% cover that is composed of scattered low shrubs (5-17% cover) dominated by <i>Eriogonum leptophyllum</i>. Other shrubs present with low cover may include <i>Atriplex confertifolia, Atriplex obovata, Ephedra torreyana, Eriogonum subreniforme, Gutierrezia sarothrae</i>, and <i>Yucca angustissima</i>. A sparse herbaceous cover may be present with scattered <i>Eriogonum divaricatum, Parryella filifolia, Pleuraphis jamesii</i>, and <i>Sporobolus airoides</i>. Exotic species are present on some stands, such as <i>Bromus tectorum</i> and <i>Sisymbrium altissimum</i>. |
Comm #5514
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Phleum pratense - Bromus pubescens - Helenium autumnale Herbaceous Vegetation
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accession code: VB.CC.35653.CEGL004018
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Southeastern Ecology Working Gro... |
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This vegetation type is currently known from high-elevation pastures or grass balds in the Southern Appalachians but is possible throughout the United States and in southern Canada. It represents montane grasslands with many alien species, presumably planted or introduced by grazing animals. <i>Phleum pratense</i>, a native of Europe, is characteristic. Occurrences are variable and patchy, often with local dominance of tall forbs. Other characteristic species include <i>Hieracium caespitosum (= Hieracium pratense)</i> (alien), <i>Potentilla canadensis</i>, and <i>Ranunculus acris</i> (alien). Stands of this type are maintained by periodic mowing or, in some instances, prescribed burning. |
Comm #5515
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I.A.6.C
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accession code: VB.CC.342.IA6C
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EcoArt 2002 |
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Comm #5516
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Schizachyrium scoparium - Sorghastrum nutans - Dalea purpurea - Silphium integrifolium Jackson Prairie Herbaceous Vegetation
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accession code: VB.CC.30923.CEGL004020
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Jones, S. B. 1971. A virgin prai... |
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This association includes remnants of prairie vegetation in the Jackson Prairie region of the upper Coastal Plain of Mississippi and adjacent Alabama. Examples occur on calcareous clay islands consisting of gently sloping uplands surrounded by pine-hardwood forests on acidic soils. The most prominent tall grasses of this association are <i>Andropogon gerardii, Schizachyrium scoparium, Sorghastrum nutans</i>, and <i>Panicum virgatum</i>. Additional tall grasses include <i>Tripsacum dactyloides, Andropogon glomeratus</i>, and <i>Paspalum floridanum</i>. Along with <i>Schizachyrium scoparium</i>, two other species provided over 50% cover in prairie openings; these are <i>Carex cherokeensis</i> and <i>Helenium autumnale</i>. |
Comm #5517
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A.382
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accession code: VB.CC.2055.A382
NOT CURRENTLY ACCEPTED
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EcoArt 2002 |
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This alliance covers calcareous forests dominated by ~Quercus muehlenbergii$ and ~Quercus stellata$ with ~Juniperus virginiana var. virginiana$. These forests are apparently more strongly calcareous than those in the I.C.3.N.a ~~Juniperus virginiana - Quercus (stellata, velutina, marilandica)$ Forest Alliance (A.383)$$. The structure and composition of vegetation in this and related alliances depends on management and disturbance history, as well as inherent site conditions. Depending on soil depth, climate, and fire interval, the canopy closure and the relative ~Quercus / Juniperus$ balance will vary considerably. At some sites, both forest and woodland communities may be present, grading into one another depending on aspect, surface geology, or fire history. With prolonged fire suppression, ~Juniperus$ will increase in importance and stature, eventually occupying part of the canopy with the oaks, and presenting greater canopy closure. In intermediate stages, an oak canopy will overtop a subcanopy of ~Juniperus$. Drier, rockier, or more frequently burned examples will tend to exhibit an oak woodland physiognomy. ^In an Ozarkian element, stands are typically found on moderate to steep mid and upper slopes of hills and plains, crests of bluffs, and ridges, generally with a southern and western aspect. Soils are shallow and well-drained, and the parent material is limestone or dolomite bedrock with fragments or boulders at or near the surface. Tree canopies are short and slow-growing with slow replacement. The understory may be poorly developed, with shrubs sometimes dominant. Mosses may dominate the ground layer. The canopy contains ~Quercus muehlenbergii, Quercus alba$, and ~Acer saccharum$. The subcanopy contains ~Acer saccharum, Juniperus virginiana, Cornus florida$, and ~Celtis laevigata var. texana$. Other tall shrubs include ~Chionanthus virginicus, Cotinus obovatus, Frangula caroliniana, Ilex decidua, Sideroxylon lanuginosum$, and ~Viburnum rufidulum$. Herbs include ~Anemone virginiana, Arabis missouriensis, Astragalus distortus, Berlandiera betonicifolia (= Berlandiera texana), Erysimum capitatum, Galium arkansanum, Hexalectris spicata, Hybanthus concolor, Penstemon arkansanus, Polygala senega$, and ~Tragia cordata$. This vegetation is associated with limestone or dolomite glades. |
Comm #5518
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Phyllodoce glanduliflora Dwarf-shrubland Alliance
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accession code: VB.CC.20663.PHYLLODOCEGLAND
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Western Ecology Working Group of... |
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Stands included in this alliance occur in alpine areas in the Washington Cascade Mountains. Elevations range from 1920-2135 m. This vegetation is found on depressions to gentle slopes with any aspect. Sites are moist areas that receive moisture from surrounding higher ground from melting snowdrifts or small streams. Some stands were found on the base of a lobe of soil formed by solifluction. Soils are poorly drained and derived from thick accumulations of pumice parent material. Mean bare ground was about 13%. Stands typically have a dense evergreen dwarf-shrub layer that is dominated by Phyllodoce glanduliflora. The herbaceous layer is moderately dense to dense, and is codominated by the perennial forbs Oreostemma alpigenum (= Aster alpigenus), Lupinus sellulus var. lobbii, and the perennial graminoid Carex spectabilis. Other consistent species include Cassiope mertensiana, Potentilla flabellifolia, and Antennaria lanata. This is a relatively species-poor community. |
Comm #5519
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Forestiera pubescens Mojave Desert Shrubland
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accession code: VB.CC.33926.CEGL002959
NOT CURRENTLY ACCEPTED
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Western Ecology Working Group of... |
0
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Comm #5520
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Cercocarpus montanus Rock Pavement Sparse Vegetation
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accession code: VB.CC.34131.CEGL002978
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Western Ecology Working Group of... |
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This association has only been described from Zion National Park. Until further inventory is completed there is no global information. |
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