Name:
Buddleja racemosa - Ungnadia speciosa / Aquilegia canadensis - Aristolochia serpentaria Shrubland
Reference:
Southeastern Ecology Working Gro...
Description:
This community occurs on limestone rimrock along mesic canyons in the southern portion of the Edwards Plateau of central Texas. It occurs on the Edwards Limestone, and geologically similar limestone formations (such as the Devils River and Segovia formations), and less commonly on the Glen Rose formation. Normally, it occurs as a lengthy but relatively narrow band (5-10 m wide) along the flat upper surface of the rimrock, and extends onto sloping to vertical limestone exposures, with shrubs and herbs rooted in fissures and crevices in the rock. Dominant shrubs are Buddleja racemosa, Ungnadia speciosa, and Toxicodendron radicans ssp. eximium. Other characteristic woody components (many of then endemic to the Edwards Plateau or with restricted distributions) are Ageratina havanensis (= Eupatorium havanense), Eysenhardtia texana, Morus microphylla, Quercus sinuata var. breviloba, Rhus virens var. virens, and Toxicodendron pubescens. A rare shrub restricted to this community is Philadelphus ernestii. Other woody plants can include Callicarpa americana, Celtis laevigata var. laevigata, Celtis laevigata var. reticulata, Cornus drummondii, Croton fruticulosus, Diospyros texana, Fraxinus texensis, Carya ovata, Ilex decidua, Juniperus ashei, Nolina lindheimeriana, Nolina texana, Opuntia leptocaulis, Opuntia engelmannii var. lindheimeri, Parthenocissus quinquefolia, Prunus mexicana, Prunus serotina var. eximia, Ptelea trifoliata ssp. angustifolia var. persicifolia, Quercus buckleyi, Quercus fusiformis, Rhus trilobata var. trilobata, Sideroxylon lanuginosum ssp. rigidum, Smilax bona-nox, Ulmus crassifolia, Viburnum rufidulum, and Yucca rupicola. Characteristic herb species of this community are Acalypha phleoides (= Acalypha lindheimeri), Aquilegia canadensis, Argyrochosma dealbata (= Notholaena dealbata), Aristolochia serpentaria, Asplenium resiliens, Brickellia cylindracea, Chamaesyce villifera, Cheilanthes alabamensis, Cheilanthes horridula, Desmodium psilophyllum, Euphorbia cyathophora, Lespedeza texana, Linum rupestre, Mentzelia oligosperma, Mirabilis albida (= Mirabilis dumetorum), Oxalis dillenii, Pellaea atropurpurea, Pellaea ovata, Perityle lindheimeri var. lindheimeri, Polygala lindheimeri, Phyllanthus polygonoides, and Salvia roemeriana. Upslope, this shrubland adjoins Juniperus ashei woodlands or Quercus fusiformis woodlands. Downslope (in the canyons), it adjoins mesic deciduous or mixed deciduous-evergreen oak forests and woodlands.
Accession Code:
VB.CC.17884.BUDDLEJARACEMOS
Plot-observations of this Community Concept:
0
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