Nongame and Rare Species Program: Rare Plant Communities of Texas
Edwards Plateau: American Sycamore-Arizona Walnut Woodland
Global Rank: G2
Description: These woodlands occur along perennial or nearly perennial streams and rivers in the eastern and southern Edwards Plateau of central Texas. Platanus occidentalis typically dominates the open canopy, which can range patchily from very open to nearly closed; other trees may include Juglans major, J. minor, Fraxinus texensis, Ulmus crassifolia, Juniperus ashei, andPrunus serotina var. eximia. Typical shrubs include Cephalanthus occidentalis. Forbs and grasses are patchy but sometimes dense and include Andropogon glomeratus var. pumilus, Panicum virgatum, Verbesina virginica, Solidago juliae, Tripsacum dactyloides, Paspalum pubiflorum, and Muhlenbergia lindheimeri, as well as various species typical of adjacent uplands. Upslope, these communities may grade into savannas or woodlands dominated by Juniperus ashei and Quercus spp.