Name:
(Hydrangea spp., Philadelphus spp.) / Heuchera spp. Herbaceous Alliance
Reference:
Southeastern Ecology Working Gro...
Description:
This alliance contains vegetated, dry to moist, basic cliffs of variable geology, with vegetation composition variable and often with a mixed and variable physiognomy. Individual occurrences may be herb-dominated, shrub-dominated, or sparsely vegetated with vascular plants (though sometimes with dense patchy cover of mosses, hepatics, or lichens). Characteristic shrubs are Hydrangea spp. (Hydrangea arborescens, Hydrangea cinerea, Hydrangea radiata), Philadelphus spp. (Philadelphus hirsutus, Philadelphus inodorus, Philadelphus pubescens), Toxicodendron radicans, Physocarpus opulifolius, and Ribes spp. (Ribes cynosbati). Characteristic herbs are Heuchera spp. (Heuchera americana var. americana, Heuchera americana var. hirsuticaulis, Heuchera americana var. hispida, Heuchera caroliniana, Heuchera villosa var. arkansana, Heuchera villosa var. villosa). Other species which are typical include Dichanthelium spp., Woodsia obtusa, Dryopteris spp., Cystopteris spp., Danthonia spicata, Deschampsia flexuosa, and others. Characteristic mosses include Anomodon attenuatus and Anomodon rostratus. The alliance is potentially widespread in the Southern Blue Ridge, Cumberlands and Southern Ridge and Valley, Interior Low Plateau, and Interior Highlands. This alliance is known from vertical and near-vertical exposures of limestone, siltstone, mudstone, calcareous sandstones, and may also occur on mafic metamorphic and igneous rocks.
Accession Code:
VB.CC.18133.HYDRANGEASPPPHI
Plot-observations of this Community Concept:
0
|
