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records 7141 through 7150 of 38961

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Salix lasiolepis
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accession code: NOT CURRENTLY ACCEPTED
CDFW Natural Communities List  0  
Comm #7141
 
Tsuga heterophylla / Vaccinium ovalifolium - Oplopanax horridus Forest
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accession code: VB.CC.35983.CEGL003232
DeMeo, T., J. Martin, and R. A. ...  0  
Comm #7142
 
Pseudotsuga menziesii - Tsuga heterophylla Forest Alliance
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accession code: VB.CC.19117.PSEUDOTSUGAMENZ
Western Ecology Working Group of...  0 This coniferous forest alliance occurs at low elevations (0-1500 m) within the maritime-influenced region of the Pacific Northwest, generally west of the Cascade Mountains. Stands are best represented on lower mountain slopes of the coastal ranges with high precipitation, long frost-free periods, and low fire frequencies. Sites include upper slope and ridgetop positions, moist, rich sites such as ravines or north-facing slopes, or in depressions, swales and east- or west-facing slopes. Slopes are gentle to moderately steep. Soil types are variable, but growth is decreased on heavy soils or soils with poor drainage. These forests are characterized by a mixed canopy of Tsuga heterophylla and Pseudotsuga menziesii, often with trees exceeding 50 m in height and a complex, multi-tiered structure of multiple age classes. Thuja plicata may codominate on valley bottom sites with poorly drained soils, and Tsuga heterophylla is generally the dominant regenerating tree species. However, young stands may lack Tsuga heterophylla or Thuja plicata. Other common tree associates include Abies grandis, Picea sitchensis, Pinus monticola, and in southwestern Oregon Pinus lambertiana, Chamaecyparis lawsoniana, Calocedrus decurrens, and occasionally Pinus ponderosa. A subcanopy of Acer macrophyllum, Chrysolepis chrysophylla (= Castanopsis chrysophylla), Lithocarpus densiflorus, Umbellularia californica, and/or Taxus brevifolia may also be present. The moderately dense shrub layer is commonly composed of Acer circinatum, Mahonia nervosa, Rhododendron macrophyllum, Gaultheria shallon, Holodiscus discolor, Vaccinium ovatum, and Oplopanax horridus. The herbaceous layer is dominated by shade-tolerant forbs and ferns, including Pteridium aquilinum, Polystichum munitum, Trientalis borealis ssp. latifolia (= Trientalis latifolia), Oxalis oregana, Achlys triphylla, Chimaphila umbellata, Linnaea borealis, and many others. Diagnostic of this alliance is an upper tree canopy dominated by Tsuga heterophylla and Pseudotsuga menziesii. 
Comm #7143
 
III.C.2.N.f
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accession code: VB.CC.714.IIIC2NF
EcoArt 2002  0  
Comm #7144
 
Cephalanthus occidentalis / Hibiscus moscheutos ssp. moscheutos Depression Pond Shrubland
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accession code: VB.CC.36161.CEGL004742
Southeastern Ecology Working Gro...  0 This buttonbush sinkhole pond type occurs in the south-central United States. This shrubland occupies the central portions of small shallow water depressions which have little or no arborescent overstory; adjacent trees are commonly <i>Quercus phellos</i> and <i>Liquidambar styraciflua</i>. <i>Cephalanthus occidentalis</i> and <i>Hibiscus moscheutos ssp. moscheutos</i> comprise the shrub stratum in water less than 1 m deep. Other woody species commonly encountered along drier margins of Tennessee examples include <i>Cornus amomum, Cornus foemina, Cornus racemosa, Nyssa biflora, Vaccinium fuscatum, Acer rubrum, Carpinus caroliniana, Oxydendrum arboreum, Itea virginica, Smilax rotundifolia</i>, and <i>Salix humilis</i>. Sedges and grasses are the dominant herbaceous species present and may include <i>Juncus repens, Rhynchospora corniculata, Carex gigantea, Carex intumescens, Leersia hexandra, Saccharum baldwinii, Glyceria septentrionalis, Panicum hemitomon</i>, and <i>Dulichium arundinaceum</i>. The last two species may develop into separate associations forming a mosaic within the small open depressions. Other herbs which may occur include <i>Polygonum hydropiperoides, Polygonum amphibium, Proserpinaca pectinata, Triadenum walteri</i>, and <i>Ludwigia</i> spp. In Missouri, species include <i>Bidens discoidea, Carex alata, Carex comosa, Decodon verticillatus, Galium tinctorium, Glyceria acutiflora, Hibiscus moscheutos ssp. lasiocarpos, Triadenum walteri (= Hypericum walteri)</i>, and <i>Hottonia inflata</i>. State-rare species that may be found in Tennessee examples of this community include <i>Ludwigia sphaerocarpa, Carex barrattii, Panicum hemitomon</i>, and <i>Dichanthelium dichotomum var. ensifolium (= Dichanthelium ensifolium)</i>. Inundation is usually continuous throughout the year, but these sites can become dry in mid or late summer or during periods of prolonged drought. Soils are silt loams, which are poorly drained soils derived from a thin layer of loess-like silt overlying cherty limestone residuum. They are also underlain by fragipans which may occur as little as 30 cm below the surface or up to 1 m deep. This layer is rarely uniform in thickness, ranging from 15-75 cm thick, or development, ranging from weakly to strongly developed. These soils have variable chemistry, but can be very acidic and low in nutrients. 
Comm #7145
 
Acacia koa / Metrosideros polymorpha - Cibotium spp. Forest Alliance
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accession code: VB.CC.26209.ACACIAKOAMETROS
Western Ecology Working Group of...  0  
Comm #7146
 
Tsuga mertensiana / Phyllodoce aleutica / Nephrophyllidium crista-galli Woodland
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accession code: VB.CC.27434.TSUGAMERTENSIAN
Western Ecology Working Group of...  0  
Comm #7147
 
Peltandra virginica - Schoenoplectus (pungens, tabernaemontani) Tidal Herbaceous Vegetation
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accession code: VB.CC.30936.CEGL006578
Eastern Ecology Working Group of...  0 This sparsely to densely vegetated herbaceous community occurs in low intertidal portions of marshes along tidal rivers and large tributaries in Virginia. It occupies both narrow zones along channel edges in chiefly freshwater regimes and in local subsidence areas in the interior of small to large marshes under freshwater to oligohaline conditions. <i>Peltandra virginica</i> is a constant and typically dominant or codominant constituent. Most stands also contain <i>Schoenoplectus pungens</i> or <i>Schoenoplectus tabernaemontani</i>. Other common associates include <i>Polygonum punctatum, Zizania aquatica, Leersia oryzoides, Pontederia cordata</i>, and in freshwater habitats <i>Eleocharis quadrangulata</i>. Stature of prevailing vegetation is generally <1 m, but emergent stems of <i>Schoenoplectus tabernaemontani</i> or <i>Zizania aquatica</i> may reach 2 m. 
Comm #7148
 
CEGL006044
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accession code: VB.CC.6624.CEGL006044
EcoArt 2002  0  
Comm #7149
 
CEGL006049
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accession code: VB.CC.6629.CEGL006049 NOT CURRENTLY ACCEPTED
EcoArt 2002  0  

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records 7141 through 7150 of 38961

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