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Reference
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Description |
Comm #10581
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Pinus (pungens, rigida) - Quercus prinus / (Quercus ilicifolia) / Gaylussacia baccata Woodland
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accession code: VB.CC.34903.CEGL004996
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Southeastern Ecology Working Gro... |
0
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This association represents mixed woodlands occupying xeric, convex, often rocky south- and west-facing slopes, ridge spurs, crests, and clifftops in the Central Appalachians and peripherally in the Piedmont and Southern Blue Ridge. Stands occur at elevations from 275 to 1200 m (900-4000 feet) on various substrates but most commonly on acidic, sedimentary and metasedimentary substrates (e.g., quartzites, sandstones, and shales). Soils are very infertile, shallow, and droughty. A thick, poorly decomposed duff layer, along with dead wood and highly volatile ericaceous shrubs, create a strongly fire-prone habitat. <i>Pinus pungens</i> and <i>Pinus rigida</i>, individually or together, codominate the canopy with <i>Quercus prinus</i>. The physiognomy of this community can approach that of a closed-canopy forest in some situations as a result of fire exclusion. Scattered canopy and subcanopy associates may include <i>Quercus coccinea, Quercus rubra, Quercus marilandica, Pinus virginiana, Castanea dentata, Acer rubrum, Sassafras albidum, Nyssa sylvatica</i>, and <i>Amelanchier arborea</i>. <i>Quercus ilicifolia</i> often dominates a moderately open to very dense tall-shrub layer, while variable combinations of <i>Kalmia latifolia, Gaylussacia baccata, Vaccinium pallidum, Vaccinium angustifolium, Vaccinium stamineum, Pieris floribunda, Rhododendron catawbiense</i>, and other ericads form a generally dense low-shrub layer. <i>Smilax rotundifolia</i> and <i>Smilax glauca</i> may be prominent climbers among the shrubs. Herbaceous species, often very sparse, are rooted in small openings among the shrubs, on rocks, and in disturbed areas where mineral soil is exposed. Typical herbs and subshrubs include <i>Epigaea repens, Gaultheria procumbens, Xerophyllum asphodeloides, Iris verna, Pteridium aquilinum var. latiusculum, Melampyrum lineare var. latifolium, Stenanthium gramineum var. micranthum, Uvularia puberula, Lycopodium tristachyum, Aralia hispida</i> (usually on outcrops), and <i>Carex tonsa</i>. Periodic fire is an important ecological process that provides opportunities for the regeneration of both canopy pines and less competitive herbaceous species, while setting back successional encroachment of xeric oaks. On many sites (e.g., clifftops, quartzite ledges), the vegetation is self-perpetuating due to extreme edaphic conditions. |
Comm #10582
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CEGL000910
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accession code: VB.CC.3512.CEGL000910
NOT CURRENTLY ACCEPTED
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EcoArt 2002 |
0
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Comm #10583
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Populus deltoides - Salix nigra Woodland
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accession code: VB.CC.21380.POPULUSDELTOIDE
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Southeastern Ecology Working Gro... |
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This association is reportedly frequent along streams throughout Oklahoma, excluding the panhandle. It is found on moist to wet soils in riparian corridors. Stands are dominated by Populus deltoides and Salix nigra. Associates include Acer negundo, Chasmanthium latifolium, Teucrium canadense, and Toxicodendron radicans. |
Comm #10584
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Ilex glabra - Lyonia lucida - Zenobia pulverulenta Shrubland
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accession code: VB.CC.25998.ILEXGLABRALYONI
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Southeastern Ecology Working Gro... |
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Mixed evergreen-deciduous and deciduous low pocosins of peat domes (ombrotrophic blanket bogs) of the Outer and Middle Coastal Plain of North Carolina and possibly South Carolina, with shrub height (0.5-2 m) maintained by extremely poor nutrient status and (secondarily) by occasional fire. Stands are dominated by Ilex glabra, Lyonia lucida, and Zenobia pulverulenta. Very scattered Pinus serotina are present (less than 10%), these sometimes of medium stature. This association includes low pocosins of the Dare County peninsula and large peat-filled Carolina bays of the Bladen and Cumberland counties area. Other characteristic species can include Kalmia cuneata, Kalmia carolina, Photinia pyrifolia (= Aronia arbutifolia), Sarracenia flava, Woodwardia virginica, Carex striata var. striata, Rhynchospora fascicularis, and Lysimachia asperulifolia. |
Comm #10585
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CEGL006189
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accession code: VB.CC.6730.CEGL006189
NOT CURRENTLY ACCEPTED
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EcoArt 2002 |
0
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Comm #10586
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CEGL008001
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accession code: VB.CC.7536.CEGL008001
NOT CURRENTLY ACCEPTED
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EcoArt 2002 |
0
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Comm #10587
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CEGL008002
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accession code: VB.CC.7537.CEGL008002
NOT CURRENTLY ACCEPTED
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EcoArt 2002 |
0
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Comm #10588
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Raphanus sativus Herbaceous Vegetation
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accession code: VB.CC.32263.CEGL003465
NOT CURRENTLY ACCEPTED
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Western Ecology Working Group of... |
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This herbaceous 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 is found on upper, linear slopes of 7-9° and ridgetops. Aspects range from north to south. It is found on granitic soils that are medium loam to moderately coarse, sandy loam. Stands of this association form an intermittent to continuous grassland dominated by <i>Raphanus sativus</i>. <i>Bromus diandrus</i> and or <i>Lolium perenne ssp. multiflorum (= Lolium multiflorum)</i> may also be common. <i>Stellaria media, Marah fabaceus, Claytonia perfoliata, Rumex acetosella, Vulpia bromoides, Amsinckia spectabilis</i>, and a variety of other herbaceous species contribute minor cover. |
Comm #10589
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CEGL006601
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accession code: VB.CC.6918.CEGL006601
NOT CURRENTLY ACCEPTED
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EcoArt 2002 |
0
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Comm #10590
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Plagiobothrys scouleri - Plantago bigelovii Herbaceous Vegetation
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accession code: VB.CC.33275.CEGL003459
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Western Ecology Working Group of... |
0
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