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Name
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Reference
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Plots↓
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Description |
Comm #12831
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Hamamelis vernalis Temporarily Flooded Shrubland Alliance
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accession code: VB.CC.27543.HAMAMELISVERNAL
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Southeastern Ecology Working Gro... |
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Shrublands characterized by Hamamelis vernalis, on gravelly streambanks and upper scour zones of rivers and streams in the Ouachita Mountains in western Arkansas and eastern Oklahoma, and the Ozark Mountains of Arkansas and Missouri. Other characteristic species include Cephalanthus occidentalis, Physocarpus opulifolius, Cornus obliqua, Salix caroliniana, Alnus serrulata, and Leptopus phyllanthoides (= Andrachne phyllanthoides). |
Comm #12832
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Schoenoplectus tabernaemontani Tropical Herbaceous Vegetation
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accession code: VB.CC.35034.CEGL003986
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Southeastern Ecology Working Gro... |
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Tropical marshes dominated by <i>Schoenoplectus tabernaemontani (= Schoenoplectus validus, = Scirpus tabernaemontani, = Scirpus validus)</i>. |
Comm #12833
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Typha domingensis Semipermanently Flooded Tropical Herbaceous Vegetation
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accession code: VB.CC.36479.CEGL003987
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Areces-Mallea, A. E., A. S. Weak... |
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This broadly defined type represents tropical, non-tidal marshes dominated by <i>Typha domingensis</i> in the West Indies. Additional types may be developed as more information becomes available. |
Comm #12834
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I.B.1.C
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accession code: VB.CC.338.IB1C
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EcoArt 2002 |
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Comm #12835
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II.A.5.C
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accession code: VB.CC.339.IIA5C
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EcoArt 2002 |
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Comm #12836
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Pinus remota - Juniperus ashei - Quercus spp. Woodland
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accession code: VB.CC.27306.PINUSREMOTAJUNI
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Southeastern Ecology Working Gro... |
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This community occurs in the Edwards Plateau of central Texas. The open canopy consists of Pinus remota, Juniperus ashei, Quercus fusiformis, and Quercus vaseyana (= Quercus pungens var. vaseyana). The shrub layer may contain Acacia berlandieri, Acacia roemeriana, Mahonia trifoliolata (= Berberis trifoliolata), Condalia viridis, Diospyros texana, Forestiera reticulata, Jatropha dioica, Rhus virens, Salvia ballotiflora, and Sophora secundiflora. Graminoids include Bouteloua curtipendula, Carex planostachys, Dichanthelium pedicellatum, Erioneuron pilosum, Poa bigelovii, and Vulpia octoflora. |
Comm #12837
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A.1437
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accession code: VB.CC.1214.A1437
NOT CURRENTLY ACCEPTED
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EcoArt 2002 |
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This alliance includes semipermanently flooded grasslands in spring-fed rivers, with near constant water level and temperature, dominated either by ~Zizania aquatica$ (in Florida) or by the narrow endemic ~Zizania texana$ (in Texas), with various emergent and submerged aquatics including ~Potamogeton illinoensis, Ludwigia palustris, Sparganium americanum, Pontederia cordata, Sagittaria lancifolia, Sagittaria$ sp., ~Polygonum$ sp., ~Cicuta maculata var. maculata (= Cicuta mexicana), Hydrocotyle umbellata$, and filamentous green algae. The exotics ~Hydrilla verticillata$ and ~Egeria densa$ may also be present. This community is threatened by exotic species, changes in hydrology (related to groundwater pumping), sedimentation, and recreational impacts. |
Comm #12838
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Abies bracteata Forest Alliance
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accession code: VB.CC.26011.ABIESBRACTEATAF
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Western Ecology Working Group of... |
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Stands of the Abies bracteata Forest Alliance (A.147) are found between 250 and 1400 m elevation in the central California Coast Ranges, most commonly near the crest of the range. Annual precipitation increases with elevation and totals approximately 80 cm, with a distinct summer dry season. This alliance occurs above the zone of summer fogs, and temperatures show more fluctuation than those at lower elevations. Stands are concentrated on steep, rough terrain that does not carry intense fire. Sites include rocky slopes, ridges, and canyons or ravines; slope aspects are typically northerly or easterly. Stands in ravines are found on stream benches or terraces, usually with concave topography and seasonally saturated soils. Soils in ravines are skeletal to deep, with loamy textures. On steep slopes and ridges the parent materials are sandstones and shales with overlying skeletal soils of various textures. These soils are well-drained and rocky. Abies bracteata is the sole, dominant, or codominant species in the canopy. The broad-leaved evergreen tree Quercus chrysolepis is important or codominant in most stands. Several other conifers, such as Pinus coulteri, Pinus ponderosa, or Pinus lambertiana, may be present. Broad-leaved evergreens, such as Arbutus menziesii and Lithocarpus densiflorus, are often present. Shrubs are infrequent, and the herbaceous layer is sparse. |
Comm #12839
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Quercus muehlenbergii - Quercus shumardii - Carya (carolinae-septentrionalis, ovata) Forest
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accession code: VB.CC.22796.QUERCUSMUEHLENB
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Southeastern Ecology Working Gro... |
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This association includes dry-mesic forests dominated by varying proportions of Quercus muehlenbergii and Quercus shumardii. It occurs in the Interior Low Plateau of Alabama, Kentucky and Tennessee, and also extends into the Ridge and Valley and Cumberland Plateau of Alabama and Georgia, on soils derived from limestones or other basic substrates, on gently rolling to rolling topography or on upper to mid slopes. In addition to the nominal species, the canopy may also contain some mixture of Acer saccharum, Carya glabra, Fraxinus americana, Fraxinus quadrangulata, and Ulmus serotina. Particularly towards the southern portion of the association's distribution, Carya carolinae-septentrionalis joins or replaces Carya ovata as the predominant hickory. Subcanopy species include Quercus stellata, Aesculus glabra, Gleditsia triacanthos, Juniperus virginiana var. virginiana, Ulmus alata, Ulmus americana, Ulmus serotina (to the south), Ulmus thomasii (to the north), Cercis canadensis var. canadensis, Celtis laevigata var. laevigata, Ostrya virginiana, Fraxinus quadrangulata, Prunus mexicana, and Juglans nigra. Shrubs include Forestiera ligustrina, Frangula caroliniana, Hypericum frondosum, Rhus aromatica var. aromatica, Sideroxylon lycioides, Symphoricarpos orbiculatus, and Viburnum rufidulum. Bignonia capreolata is a prominent liana. Other woody vines include Lonicera sempervirens and Parthenocissus quinquefolia. Herbs, a mixture of submesic and xeric limestone species, include Fleischmannia incarnata, Lithospermum tuberosum, Polygonatum biflorum, Polymnia canadensis, Scutellaria ovata, Sedum pulchellum, Packera anonyma (= Senecio anonymus), Tragia cordata, Ruellia humilis, Ruellia strepens, Matelea gonocarpos, Arabis laevigata var. laevigata, Cuphea viscosissima, Galium sp., Diarrhena americana (= var. americana), Elymus sp., Senna marilandica (= Cassia marilandica), Chimaphila maculata, Salvia urticifolia, Tiarella cordifolia, Triosteum angustifolium, Asplenium platyneuron, and Asplenium resiliens. Examples of this association may grade into Juniperus virginiana var. virginiana - Fraxinus quadrangulata / Polymnia canadensis - (Astranthium integrifolium) Woodland (CEGL003754), Quercus alba - Quercus rubra - Quercus muehlenbergii / Cercis canadensis Forest (CEGL002070), or Quercus muehlenbergii - Quercus (falcata, shumardii, stellata) / Cercis canadensis / Viburnum rufidulum Forest (CEGL007699). Most examples observed seem to be generally subxeric. More mesic examples, formerly regarded as a 'mesic variant' of this association, are now accommodated as Quercus shumardii - Quercus muehlenbergii - Acer (barbatum, leucoderme, saccharum) / Ostrya virginiana Forest (CEGL008442). |
Comm #12840
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CEGL007513
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accession code: VB.CC.7157.CEGL007513
NOT CURRENTLY ACCEPTED
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EcoArt 2002 |
0
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