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Reference
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Description |
Comm #11071
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CEGL008392
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accession code: VB.CC.7729.CEGL008392
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EcoArt 2002 |
0
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Comm #11072
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Pinus palustris - Pinus (echinata, taeda) Upper West Gulf Coastal Plain Woodland
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accession code: VB.CC.35779.CEGL008482
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Southeastern Ecology Working Gro... |
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This association represents extremely rare occurrences of <i>Pinus palustris</i>-dominated vegetation along the periphery of the historic range limits of the species west of the Mississippi River in the Upper West Gulf Coastal Plain of eastern Texas. As currently understood, this type is not known to occur in Louisiana where <i>Pinus palustris</i>-dominated vegetation did not occur historically in the Upper West Gulf Coastal Plain. However, this type also includes other isolated patches of <i>Pinus palustris</i> vegetation on loamy soils in the region within the West Gulf Coastal Plain but north of the main belt of contiguous pure <i>Pinus palustris</i> vegetation. All known occurrences in Texas are currently extremely isolated from one another and from other <i>Pinus palustris</i> communities. These areas were likely not subject to the most frequent fires typically associated with <i>Pinus palustris</i>. Due to infrequency of natural fires and loamy soil conditions, the overstory may be somewhat closed and supports a natural mixture of <i>Pinus palustris, Pinus echinata</i>, and <i>Pinus taeda</i>. No known examples have an open, woodland structure, but this type is placed in the <i>Pinus palustris</i> Woodland Alliance. In some stands, the only <i>Pinus palustris</i> present are relicts. This type has a well-developed, fairly diverse layer of hardwoods in the subcanopy, midstory, and short-shrub stratum. The herbaceous layer may be sparse to non-existent, and no particular species are diagnostic of this type. However, this type lacks species typical of xeric and very dry environments of the region. |
Comm #11073
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Quercus chrysolepis / Arctostaphylos patula Forest
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accession code: VB.CC.32565.CEGL008601
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Western Ecology Working Group of... |
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This forest association is currently only known from Yosemite National Park in California, and the following description is based on occurrences there. Additional information will be added as it becomes available. Stands of this forest are generally found at mid-elevations (1495-2347 m [4900-7700 feet]) on the mid to upper portions of linear to convex-shaped slopes with eastern to southern aspects. These sites tend to be on moderate to steep (9-30°) slopes. Soils tend to be shallow and poorly developed with textures ranging from rocky loam to rocky, gravelly loam and of granitic parent material. Penetration is medium to difficult. Stands form a two-story structure dominated by <i>Quercus chrysolepis</i> in the tree layer and <i>Arctostaphylos patula</i> in the shrub layer. A variety of other species found in this association, although far less common and constant, may include <i>Arctostaphylos viscida, Cercocarpus montanus var. glaber (= Cercocarpus betuloides), Calocedrus decurrens, Pinus jeffreyi, Pseudotsuga menziesii, Pinus lambertiana, Quercus kelloggii, Ceanothus cordulatus</i>, and <i>Ceanothus integerrimus</i>. |
Comm #11074
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Aristida purpurea var. longiseta - Poa secunda Herbaceous Vegetation
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accession code: VB.CC.34388.CEGL001781
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Western Ecology Working Group of... |
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Comm #11075
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Pinus strobus - Abies balsamea - Betula alleghaniensis Driftless Forest
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accession code: VB.CC.36890.CEGL002111
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Midwestern Ecology Working Group... |
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This pine-hardwoods community is found in the 'Driftless Region' of southeastern Minnesota, United States. Stands occur on moist, steep north-facing slopes with thin soils, and are usually associated with cliffs, talus slopes, and bedrock outcrops. The tree canopy includes any combination of <i>Abies balsamea, Betula alleghaniensis</i>, and <i>Pinus strobus</i>. The shrub layer contains <i>Acer spicatum, Taxus canadensis</i>, and <i>Viburnum opulus var. americanum (= Viburnum trilobum)</i>. Characteristic herbaceous species include <i>Allium cernuum, Equisetum scirpoides, Streptopus lanceolatus var. longipes (= Streptopus roseus)</i>, and, more rarely, <i>Cornus canadensis</i>. |
Comm #11076
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Carex joorii - Eleocharis tenuis var. verrucosa - Juncus spp. - Panicum rigidulum Interior Highlands Channel Scar Depression Wooded Herbaceous Vegetation
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accession code: VB.CC.34747.CEGL007116
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Southeastern Ecology Working Gro... |
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This wetland type is found on abandoned terraces of mid-gradient streams in the Ouachita Mountains and Arkansas Valley ecoregions of Arkansas and possibly Oklahoma. These wetlands occur in depressions that occupy former channels of these streams and range from forested, oak-dominated vernal flats to buttonbush/graminoid marshes to permanent open-water ponds with sedge hummocks. These wetlands are typically seasonally inundated but may hold water year around in deeper examples. Some examples are completely removed from overbank flooding of the present-day stream and receive all of their hydrologic input from precipitation. Other examples may receive water from the adjacent stream in major flood events. Forested examples are typically dominated by <i>Quercus phellos, Quercus nigra, Fraxinus pennsylvanica</i>, and <i>Liquidambar styraciflua</i>. Deeper ponds may have an open-water zone fringed with large, overhanging trees, including <i>Taxodium distichum, Quercus lyrata</i>, and <i>Planera aquatica</i>. Common shrubs include <i>Lyonia ligustrina, Vaccinium fuscatum, Vaccinium virgatum, Amorpha fruticosa, Morella cerifera (= Myrica cerifera)</i>, and <i>Cornus foemina</i>. <i>Cephalanthus occidentalis</i> may be common in wetter examples. Forested examples typically contain a graminoid understory rich in sedges and rushes and often with extensive bryophyte cover (particularly <i>Sphagnum</i> spp.). Areas of bare mineral soil are not uncommon. The herbaceous layer is dominated by sedges such as <i>Carex albolutescens, Carex crinita, Carex debilis, Carex flaccosperma, Carex ozarkana, Carex tribuloides, Carex hyalinolepis, Eleocharis tenuis var. verrucosa, Eleocharis wolfii</i>, and <i>Rhynchospora glomerata</i>; grasses such as <i>Chasmanthium laxum, Chasmanthium latifolium</i>, and <i>Agrostis perennans</i>; and rushes such as <i>Juncus debilis, Juncus effusus</i>, and <i>Juncus coriaceus</i>. Forbs are often scattered around the edges of these wetlands or on hummocks within them. The wettest areas are often sparsely vegetated except for <i>Sphagnum</i> spp. and may be covered by leaf litter or have exposed mineral soil. Non-forested (open) examples have an open, exposed shoreline fringed by concentric zones of emergent herbaceous vegetation and shrubs. Water levels fluctuate throughout the growing season as water is lost to evaporation, exposing a ring of mudflats colonized primarily by various herbaceous annual plants. Submergent and floating-leaved vegetation occurs in open-water ponds in this habitat and includes <i>Brasenia schreberi, Ceratophyllum demersum, Utricularia gibba, Utricularia radiata, Nuphar advena, Potamogeton pulcher</i>, and <i>Potamogeton pusillus</i>. These ponds are often fringed by a diverse shrub community. |
Comm #11077
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Betula papyrifera / Juniperus horizontalis Shale Woodland
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accession code: VB.CC.37120.CEGL002129
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Midwestern Ecology Working Group... |
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This paper birch type has been reported from North Dakota, United States. Little is known about this type. |
Comm #11078
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Quercus shumardii - Quercus michauxii - Quercus nigra / Acer barbatum - Tilia americana var. heterophylla Forest
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accession code: VB.CC.35488.CEGL008487
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Southeastern Ecology Working Gro... |
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This association covers bottomland forests of the southern Piedmont of Georgia and South Carolina, the Piedmont-Ridge and Valley transition region of Alabama, the adjacent Upper East Gulf Coastal Plain of Georgia, and the Southern Ridge and Valley of Georgia and Tennessee. Stands occur in broad flat floodplains of medium-sized rivers, or as smaller occurrences along creeks and their adjacent floodplains. The diverse canopy is primarily composed of bottomland terrace species, but may also contain some levee species which would normally sort out better along a hydrologic gradient in the larger floodplains of the Coastal Plain. The canopy of stands is typically dominated by <i>Quercus shumardii</i> and <i>Quercus michauxii</i> with <i>Liquidambar styraciflua</i> and <i>Quercus nigra</i>. This type is found either in the outer edges of the Piedmont, in the transition area to the Ridge and Valley, or just barely coastward of the Fall-line, so <i>Quercus pagoda</i> is either not present at all, or if present it is at very low frequency. Other canopy and/or subcanopy species may include <i>Acer barbatum, Liriodendron tulipifera, Tilia americana var. heterophylla, Carya cordiformis</i> (which may have high cover), <i>Carya carolinae-septentrionalis, Juglans nigra, Quercus phellos</i>, and <i>Pinus taeda</i>. Occasionally, <i>Celtis laevigata, Platanus occidentalis</i> or <i>Betula nigra</i> may be present at low values, but they are not characteristic and may signal the start of a different bottomland community type when noted in large quantities. The rare tree <i>Quercus oglethorpensis</i> may be present within its limited range in the driest versions of this community (e.g., in Elbert and Wilkes counties of Piedmont Georgia and Greenwood and McCormick counties of Piedmont South Carolina). Shrubs include <i>Arundinaria gigantea</i> (which may be dominant in some stands), <i>Lindera benzoin, Ilex decidua, Callicarpa americana</i>, and <i>Corylus americana</i>. Woody vines may be prominent in stands. The herb stratum is fairly diverse. |
Comm #11079
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Carya glabra - Fraxinus americana / Acer leucoderme / Piptochaetium avenaceum Woodland
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accession code: VB.CC.36239.CEGL008489
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Southeastern Ecology Working Gro... |
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This association is a woodland dominated by <i>Carya glabra, Quercus stellata</i>, and <i>Fraxinus americana</i>, occurring in nutrient-rich soils derived from a base-rich granite. Stands are found at low elevations from 90-180 m (300-600 feet) in the lower Piedmont of Georgia, and possibly Alabama and South Carolina. Other canopy species include <i>Carya carolinae-septentrionalis, Quercus muehlenbergii</i>, and <i>Ulmus alata</i>. Subcanopy species include <i>Acer leucoderme, Quercus rubra</i>, and <i>Sideroxylon lycioides</i>; tall shrubs are <i>Cercis canadensis var. canadensis</i> and <i>Vaccinium arboreum</i>. The shrub stratum includes <i>Rhus aromatica var. aromatica, Vaccinium stamineum, Crataegus spathulata, Callicarpa americana, Hypericum hypericoides ssp. hypericoides, Ptelea trifoliata</i>, and <i>Hydrangea quercifolia</i>. Woody vines include <i>Parthenocissus quinquefolia, Vitis rotundifolia</i>, and <i>Bignonia capreolata</i>. Typical species of the diverse herb stratum include <i>Piptochaetium avenaceum, Carex</i> spp., <i>Schizachyrium scoparium, Antennaria plantaginifolia, Arundinaria gigantea, Asplenium platyneuron, Symphyotrichum</i> spp. (= <i>Aster</i> spp.), <i>Dichanthelium boscii, Galium circaezans, Heuchera villosa, Houstonia longifolia, Leersia</i> sp., <i>Lespedeza repens, Oxalis violacea, Pleopeltis polypodioides ssp. michauxiana, Potentilla canadensis, Pseudognaphalium obtusifolium ssp. obtusifolium, Solidago</i> sp., <i>Tragia urticifolia, Manfreda virginica, Scutellaria ovata, Thalictrum thalictroides</i>, and <i>Woodsia obtusa</i>. |
Comm #11080
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Conocarpus erectus - (Laguncularia racemosa) / Cladium mariscus ssp. jamaicense Scrub
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accession code: VB.CC.34785.CEGL003798
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Southeastern Ecology Working Gro... |
0
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This shrubland, dominated by <i>Conocarpus erectus</i> and <i>Laguncularia racemosa</i> with <i>Cladium mariscus ssp. jamaicense</i>, is found in semipermanently to seasonally flooded, relatively fresh, island-interior depressions in the Florida Keys. |
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