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Name
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Reference
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Plots↓
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Description |
Comm #6561
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Quercus rubra - Quercus shumardii Forest
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accession code: VB.CC.24358.QUERCUSRUBRAQUE
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Southeastern Ecology Working Gro... |
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This mesic forest association occurs on lowlands and mesic slopes in eastern Oklahoma; it should be expected in adjacent states, at least Arkansas. The canopy is typically dominated by Quercus rubra and Quercus shumardii. Other associated species include Acer saccharum, Carya alba, Crataegus viridis, Elymus villosus, Parietaria pensylvanica, and Quercus velutina. |
Comm #6562
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Tamaulipan Floodplain
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accession code: urn:lsid:ecoobs.vegbank.org:commConcept:8194-{E8000F8A-DDFE-4658-9585-AB86AE931E8B}
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Comer et al. 2003 |
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Comm #6563
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Trichophorum caespitosum - Osmunda cinnamomea - Carex barrattii - Carex buxbaumii Herbaceous Vegetation
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accession code: VB.CC.35055.CEGL007723
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Southeastern Ecology Working Gro... |
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This community occurs in seasonally saturated to ponded areas at the base of sheer, north-facing granitic dome cliffs. The community is dominated by <i>Trichophorum caespitosum (= Scirpus cespitosus), Osmunda cinnamomea, Carex barrattii, Carex buxbaumii, Carex debilis, Calamagrostis coarctata, Coreopsis major, Dulichium arundinaceum, Krigia montana, Osmunda regalis var. spectabilis, Sanguisorba canadensis, Saxifraga michauxii</i>, and <i>Trautvetteria caroliniensis var. caroliniensis</i>. This community occurs at the base of 300-m high cliffs and consists of ponds up to 30 cm deep and seasonally saturated adjoining areas. The community is maintained by seepage, rock fall, and especially the fall of ice slabs. |
Comm #6564
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Dryas octopetala - Carex rupestris Dwarf-shrub Herbaceous Vegetation
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accession code: VB.CC.26538.DRYASOCTOPETALA
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Western Ecology Working Group of... |
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This alpine fell-field association is found throughout Colorado's Rocky Mountains, and in western and central Montana north into Alberta. This vegetation type represents the drier, mostly subxeric to submesic, occurrences of Dryas octopetala-dominated dwarf-shrublands. It occurs predominantly in alpine environments (well above treeline); actual elevations vary from 3600 to 3900 m in the Colorado alpine to between 1700 and 2400 m in northwestern Montana. Typical terrain is moderately to steeply sloping and all aspects are represented. The determining environmental parameter appears to be wind-scouring with sites blown snow-free in winter. Soils are very poorly developed and well- to rapidly drained. The association occurs on a wide variety of parent materials, though typically on residual and colluvial landforms. Where not protected by a dwarf-shrub mat, ground surfaces are comprised of 5 to 60% exposed gravel, cobble and to a much lesser degree soil; litter can only accumulate immediately under the protection of the dwarf-shrub cover. A mat of the dwarf-shrub Dryas octopetala dominates the visual aspect, with variable cover ranging from 10% to 80%. Usually mats occur in relatively evenly spaced windrows oriented perpendicular to the prevailing wind or along the edges of stepped terracettes. Other dwarf-shrubs include Salix arctica, Dasiphora fruticosa ssp. floribunda (= Pentaphylloides floribunda, = Potentilla fruticosa), Arctostaphylos uva-ursi, Juniperus communis, and Salix reticulata. Of the herbaceous component, graminoids generally have greater cover than forbs, a condition which is presumed to indicate the relatively xeric nature of the type. Carex rupestris has high constancy and occasionally is the dominant graminoid, but in Glacier National Park stands there is no one dominant graminoid, only a variable suite of xeric-adapted species, including Carex nardina, Calamagrostis purpurascens, Calamagrostis koelerioides, Festuca brachyphylla, Poa alpina, and Trisetum spicatum. Typically the forb component does not exceed 10% cover, and that of individual forbs does not exceed 5%; those with highest constancy include Minuartia obtusiloba (= Arenaria obtusiloba), Myosotis asiatica, Geum rossii, Artemisia scopulorum, Saxifraga bronchialis, Silene acaulis, Oxytropis campestris, Rhodiola rosea (= Sedum roseum), Solidago multiradiata, Potentilla diversifolia, and Smelowskia calycina. Cover of mosses and lichens is very low. |
Comm #6565
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Sedum pulchellum - Clinopodium arkansanum - Sporobolus vaginiflorus Herbaceous Vegetation
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accession code: VB.CC.36567.CEGL007797
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Nixon, E. S., and R. J. George. ... |
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This community occurs on outcrops of marine sediment and glauconitic clays of the Weches Formation in central eastern Texas, primarily in San Augustine, Nacogdoches, and Sabine counties. These outcrops are exposed by natural erosion of hillside slopes. Soils are mapped as Trawick series (Mollic Hapludalfs) and are shallow, rocky, and basic, which inhibits growth of woody vegetation. Outcrops are seepy and saturated during winter and early spring but become hard and dry in the summer. Enormous seasonal variations in species dominance can occur. Other characteristic species include <i>Valerianella radiata, Galium virgatum, Minuartia patula (= Arenaria patula), Allium drummondii, Anemone caroliniana, Opuntia</i> spp., <i>Croton monanthogynus, Chamaesyce nutans (= Euphorbia nutans), Arnoglossum plantagineum (= Cacalia plantaginea)</i>, and <i>Ipomopsis rubra</i>. Endemic annuals include <i>Lesquerella pallida</i> and <i>Leavenworthia aurea var. texana (= Leavenworthia texana)</i>. A scattered shrub layer, including <i>Cercis canadensis, Cornus drummondii, Juniperus virginiana, Sideroxylon lanuginosum</i>, may be present on some sites. |
Comm #6566
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Nyssa ursina / Aristida beyrichiana - Rhynchospora (chapmanii, corniculata) Herbaceous Vegetation
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accession code: VB.CC.37571.CEGL008595
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Carr, S. C., K. M. Robertson, an... |
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This type represents very wet prairies or open savannas on the Apalachicola National Forest in northern Florida. These are possibly the wettest phase of these communities currently described. Although essentially an herbaceous community, this type often has an emergent shrub layer of <i>Nyssa ursina</i> and clumps of other shrubs such as <i>Ilex glabra, Ilex myrtifolia, Morella caroliniensis (= Myrica heterophylla), Cliftonia monophylla</i>, and may have a spindly layer of stunted <i>Pinus elliottii</i> present. These sites are heavily dominated by <i>Aristida beyrichiana</i> but also support <i>Ctenium aromaticum, Rhynchospora chapmanii</i> and/or <i>Rhynchospora corniculata</i>, and <i>Aristida palustris</i>. <i>Rhynchospora corniculata</i> is found in the wettest sites and is either rare or absent from other wet prairies of the region which are apparently somewhat drier. <i>Lycopodiella alopecuroides</i> and <i>Rhexia lutea</i> may also be indicative. The emergent shrub layer may develop due to soil wetness which does not allow fire to penetrate the wettest portions of these savannas. |
Comm #6567
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CEGL008432
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accession code: VB.CC.7760.CEGL008432
NOT CURRENTLY ACCEPTED
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EcoArt 2002 |
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Comm #6568
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CEGL008433
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accession code: VB.CC.7761.CEGL008433
NOT CURRENTLY ACCEPTED
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EcoArt 2002 |
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Comm #6569
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CEGL001659
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accession code: VB.CC.4227.CEGL001659
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EcoArt 2002 |
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Comm #6570
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Carex douglasii Herbaceous Vegetation
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accession code: VB.CC.23438.CAREXDOUGLASIIH
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Western Ecology Working Group of... |
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