Name:
Thuja occidentalis Woodland Alliance
Reference:
Eastern Ecology Working Group of...
Description:
This alliance contains woodlands (with variable canopy closure) of calcareous bedrock outcrops and limestone cliffs on which Thuja occidentalis is the dominant canopy tree, although associations can include admixtures of deciduous species. The growth form is generally single-stemmed, but trees may be quite stunted. Associated canopy species can include Pinus resinosa, Ostrya virginiana, Quercus rubra, Pinus strobus, Abies balsamea, Betula alleghaniensis, Betula papyrifera, Picea mariana, Picea glauca, Acer saccharum, Fraxinus americana, Tsuga canadensis, Celtis occidentalis, Ulmus rubra, Quercus alba, and Quercus muehlenbergii. Herbaceous species vary with geography but can include Zigadenus elegans ssp. glaucus, Carex eburnea, Cystopteris bulbifera, Pellaea atropurpurea, Pinguicula vulgaris, Primula laurentiana, Saxifraga oppositifolia, Waldsteinia fragarioides, Oligoneuron album (= Solidago ptarmicoides), and Carex pensylvanica, among others. This alliance occurs in Canada, the Great Lakes region, northern New England, New York, and discontinuously in Maryland, West Virginia, Virginia, Kentucky, and Tennessee. In the Southeast it is known mostly from the Ridge and Valley Province, but occurrences are known from the periphery of the Tennessee Blue Ridge.
Accession Code:
VB.CC.18279.THUJAOCCIDENTAL
Plot-observations of this Community Concept:
0
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