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Name
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Reference
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Description |
Comm #571
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Betula alleghaniensis - Quercus rubra / Acer spicatum / Dryopteris intermedia - Oclemena acuminata Forest
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accession code: urn:lsid:vegbank.org:commConcept:36563-{655593AE-40A2-4CF1-B18E-3D2D49E37D4F}
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NatureServe Biotics 2019 |
34
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The global range of this community is poorly known but probably includes high-elevation areas of the Central Appalachians in Virginia, West Virginia, Maryland, and Pennsylvania. In Virginia, this association is almost exclusively associated with cool, rocky, northwest- to northeast-facing slopes at elevations from about 975 m (3000 feet) to more than 1300 m (4300 feet). Habitats occur on various geologic substrates, including sandstone, metabasalt (greenstone), amphibolite, and granitic formations. <i>Betula alleghaniensis</i> and <i>Quercus rubra</i> are constant, high-cover, usually codominant canopy trees. Minor canopy associates can include <i>Acer saccharum, Betula lenta, Tsuga canadensis, Tilia americana</i>, and <i>Fraxinus americana</i>. <i>Acer pensylvanicum</i> and <i>Acer spicatum</i> are the most abundant and characteristic understory trees, although <i>Ilex montana</i> may be locally abundant. More-or-less frequent shrubs include <i>Hamamelis virginiana, Sambucus racemosa</i>, and <i>Hydrangea arborescens</i>. <i>Rhododendron maximum</i> is a frequent shrub at the four southernmost sites in Virginia but is absent elsewhere. The herb layer varies from moderately sparse to very dense. |
Comm #572
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Diplacus aurantiacus Shrubland
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accession code: VB.CC.37430.CEGL003705
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34
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This shrubland is known from southern and central interior coastal mountains of California. It occurs on abrupt, somewhat steep to steep slopes with variable aspect at low elevations between 43 and 657 m (141-2155 feet). Soils are sand to silt loams, on volcanic, sedimentary, and colluvial parent materials. Slopes are often unstable, or recently burned, or a product of recent land- or rockslides. It is characterized by a strong dominance of <i>Diplacus aurantiacus (= Mimulus aurantiacus)</i> in the shrub layer. It has a presence of <i>Leymus condensatus, Selaginella bigelovii</i>, and <i>Bromus diandrus</i> in the herbaceous layer of many stands, but none are consistently present. The emergent tree layer is usually absent but may include <i>Juglans californica, Eucalyptus</i> sp., <i>Pinus</i> sp., <i>Quercus agrifolia</i>, and <i>Platanus racemosa</i>. |
Comm #573
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Salvia mellifera - Artemisia californica Shrubland
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accession code: VB.CC.37489.CEGL003012
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33
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This shrubland association occurs on moderate to steep slopes of variable aspect at low elevations between 0 and 415 m. It is characterized by a codominance of <i>Salvia mellifera</i> and <i>Artemisia californica</i> in the shrub layer. The herbaceous layer is composed of a variety of mostly non-native species at low cover. The emergent tree layer includes occasional <i>Quercus agrifolia</i>. |
Comm #574
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Winter-fat Dwarf-shrubland Alliance
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accession code: VB.cc.30351.WINTERFATDWARFS
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NVC 2004 |
33
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Comm #575
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PSEUDOTSUGA MENZIESII FOREST ALLIANCE
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accession code: VB.CC.12807.PSEUDOTSUGAMENZ
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Jennings 2003. Vegetation alliances: composition and function. |
33
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Comm #576
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Quercus grisea Woodland Alliance
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accession code: VB.cc.30815.QUERCUSGRISEAWO
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NVC 2004 |
33
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Comm #577
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LYCIUM ANDERSONII SHRUBLAND ALLIANCE
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accession code: VB.cc.30125.LYCIUMANDERSONI
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NVC 2004 |
33
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Comm #578
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Rubber Rabbitbrush Shrubland Alliance
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accession code: VB.cc.30529.RUBBERRABBITBRU
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NVC 2004 |
33
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Comm #579
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ATRIPLEX CANESCENS - KRASCHENINNIKOVIA LANATA SHRUBLAND ALLIANCE
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accession code: VB.cc.29873.ATRIPLEXCANESCE
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NVC 2004 |
33
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Comm #580
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CORNUS SERICEA ALLIANCE
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accession code: VB.CC.8718.CORNUSSERICEAAL
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Jennings 2003. Vegetation alliances: composition and function. |
33
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