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Comm #10391
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Sedum pulchellum - Allium drummondii - Talinum parviflorum - Centaurium texense / Nostoc commune Herbaceous Vegetation
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accession code: VB.CC.34779.CEGL004874
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Southeastern Ecology Working Gro... |
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This association accommodates seasonally wet limestone glades of the blackland prairie region of Texas. These glades are typically on the upper rims of gradual to moderately steep slopes, in areas exceeding 1 ha, and inter-dispersed among tallgrass prairie dominated by <i>Schizachyrium scoparium, Sorghastrum nutans</i>, and <i>Carex microdonta</i><b>.</b> The lower slopes of the prairie typically grades into a woodland dominated by <i>Quercus muehlenbergii, Quercus velutina, Ulmus rubra, Juniperus virginiana, Juniperus ashei, Fraxinus americana, Cercis canadensis, Rhamnus lanceolata, Cornus drummondii, Rhus aromatica</i>, and <i>Sophora affinis (= Styphnolobium affine)</i>. Ground and limestone pool moisture during late winter is prevalent. This glade vegetation has developed on the Gober Chalk, Pawpaw, and Lavender Outcrop formations and characteristically occupies depressions in the limestone which hold water in the winter and early spring. These areas become desiccated and baked in the heat of summer. Characteristic plants are the annuals <i>Sedum pulchellum</i> and <i>Centaurium texense</i>, and the perennials <i>Allium drummondii</i> and <i>Talinum parviflorum (= Phemeranthus parviflorus)</i>. The blue-green alga <i>Nostoc commune</i> forms mats. Other wet pool specialists include <i>Crassula drummondii, Rotala ramosior</i>, and <i>Valerianella amarella</i>. Characteristic taxa that occupy the pools when they dry out include <i>Sporobolus vaginiflorus (var. ozarkanus, var. vaginiflorus), Minuartia patula, Houstonia micrantha, Portulaca</i> sp., <i>Galium virgatum, Croton monanthogynus</i>, and <i>Chamaesyce nutans</i>. Other taxa that are commonly found in crevices of limestone sheets and drier edges include <i>Bouteloua curtipendula, Bouteloua rigidiseta, Paronychia virginica, Lesquerella gracilis, Tetraneuris linearifolia, Asclepias asperula, Heliotropium tenellum, Hedyotis nigricans (= Stenaria nigricans), Hedeoma reverchonii, Draba cuneifolia, Anemone berlandieri, Opuntia</i> sp., <i>Lithospermum incisum, Thelesperma </i><i>filifolium</i><i>, Zigadenus nuttallii, Orobanche</i> sp., <i>Penstemon cobaea, Spiranthes magnicamporum</i>, and <i>Evax verna</i>. |
Comm #10392
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Pinus banksiana / Kalmia angustifolia - Vaccinium spp. Woodland
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accession code: VB.CC.26280.PINUSBANKSIANAK
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Eastern Ecology Working Group of... |
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The jack pine woodland of northern New England and the Canadian maritime provinces occurs sporadically on dry rocky summits, ridges, outcrops and lakeshores. Soil development is typically restricted to crevices or sheltered patches among the predominant exposed bedrock. Where they occur, soils are shallow, well-drained to excessively drained, dry, acidic, coarse sands. Elevations of known examples range from near sea level to 4000 feet. The dominant vegetation features are the patchy and open canopy and the extensive dwarf-shrub layer. Tall shrubs and herbs are sparse. The bryoid layer often features large areas of reindeer lichens and drought-tolerant mosses. The ground cover is sparse needle litter and exposed bedrock. In the canopy, which ranges from 25-60% cover, Pinus banksiana is dominant. Less abundant conifers may include Picea rubens, Picea mariana (at coastal sites), Pinus strobus, or Abies balsamea. Betula papyrifera var. papyrifera and Betula papyrifera var. cordifolia may be present, but the deciduous canopy component is minor. Tall shrubs include Sorbus americana, Viburnum nudum var. cassinoides, Nemopanthus mucronatus, Photinia melanocarpa (= Aronia melanocarpa), or Amelanchier spp. The low heath layer is comprised of Vaccinium angustifolium, Vaccinium myrtilloides, Gaylussacia baccata, Kalmia angustifolia, and, near the coast, Empetrum nigrum and Vaccinium vitis-idaea. Forbs and graminoids include Deschampsia flexuosa, Danthonia spicata, Sibbaldiopsis tridentata, Cornus canadensis, Trientalis borealis, Solidago simplex var. randii, and Maianthemum canadense. The bryophyte layer is dominated by lichens such as Cladina stellaris (= Cladonia alpestris), Cladina rangiferina (= Cladonia rangiferina), Rhizocarpon geographicum, and Umbilicaria spp. Mosses include Pleurozium schreberi, Polytrichum juniperinum, and Polytrichum piliferum. This association is distinguished from more boreal jack pine woodlands (Pinus banksiana - (Picea mariana, Pinus strobus) / Vaccinium spp. Rocky Woodland (CEGL002483)) by the lack or low importance of Picea mariana (in this type, only rarely present in extreme coastal occurrences), from midwestern jack pine pavement barrens (Pinus banksiana / Photinia melanocarpa / Xanthoparmelia spp. Woodland (CEGL005045)) by its occurrence on igneous bedrock, and from midwestern jack pine-oak woodlands (Pinus banksiana - Pinus resinosa / Quercus ellipsoidalis Woodland (CEGL002484)) by its bedrock, rather than sand plain, substrate. Its distinction from the Great Lakes Pinus banksiana - Pinus strobus - (Quercus rubra) / Cladina spp. Nonvascular Vegetation (CEGL002491) is based primarily on geography. |
Comm #10393
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A.1387
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accession code: VB.CC.1159.A1387
NOT CURRENTLY ACCEPTED
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EcoArt 2002 |
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This alliance, found in the midwestern United States and southern Canada, is comprised of tall, coarse-leaved, mixed emergent marsh species, especially ~Schoenoplectus fluviatilis (= Scirpus fluviatilis)$. Associated emergent species can include ~Calamagrostis canadensis, Eupatorium perfoliatum, Sagittaria latifolia, Sparganium eurycarpum, Typha$ spp., and ~Verbena hastata$. ^This alliance is found in depressions and near rivers and ponds where the ground is flooded for much of the growing season. The soils are usually mucky and deep. |
Comm #10394
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Thuja plicata Seasonally Flooded Forest Alliance
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accession code: VB.CC.18527.THUJAPLICATASEA
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Western Ecology Working Group of... |
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Comm #10395
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CEGL007955
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accession code: VB.CC.7516.CEGL007955
NOT CURRENTLY ACCEPTED
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EcoArt 2002 |
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Comm #10396
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Serie de Cavanillesia umbellata - Aspidosperma cylindrocarpon
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accession code: urn:lsid:vegbank.org:commConcept:37074-{C23726A8-50D1-413F-926B-DB81724289B4}
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NatureServe Biotics 2019 |
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Termotropical inferior pluviestacional subhúmedo <1000-1100 m. Combinación florística diferencial: <i>Apuleia leiocarpa, Attalea phalerata, Caesalpinia floribunda, Cavanillesia umbellata, Cedrela fissilis, Centrolobium tomentosum, Chrysophyllum gonocarpum, Combretum leprosum, Gallesia integrifolia, Kielmeyera paniculata, Lonchocarpus macrocarpus, Machaerium guanaiense, Machaerium scleroxylon, Physocalymma scaberrimum</i> y <i>Spondias mombin</i>. Principales áreas potenciales y/o actuales conocidas: Dept. La Paz, Yungas de Coroico, Boopi y Cotacajes. |
Comm #10397
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Senecio triangularis - Veratrum californicum Herbaceous Vegetation
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accession code: VB.CC.26496.SENECIOTRIANGUL
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Western Ecology Working Group of... |
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Comm #10398
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Pinus edulis - Quercus arizonica / Rhus trilobata Woodland
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accession code: VB.CC.33291.CEGL000790
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Western Ecology Working Group of... |
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Comm #10399
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Carex geyeri Herbaceous Alliance
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accession code: VB.CC.27453.CAREXGEYERIHERB
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Western Ecology Working Group of... |
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Comm #10400
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Ceanothus velutinus - Prunus emarginata - Artemisia tridentata Shrubland
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accession code: VB.CC.24528.CEANOTHUSVELUTI
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Western Ecology Working Group of... |
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