Nongame and Rare Species Program: Rare Plant Communities of Texas
Edwards Plateau: Lacey Oak-Ashe Juniper Woodland
Global Rank: G3G4
Description: This savanna or open woodland community occurs on hills in the southern and western Edwards Plateau and is characterized by a 6-12 meter canopy of Quercus laceyi with lesser amounts of Juniperus ashei, which is more important in the understory. Ulmus crassifolia, Quercus buckleyi, Q. fusiformis , and Q. muehlenbergii are important components in the canopy, with Sophora secundiflora, Diospyros texana, Ptelea trifoliata, Ungnadia speciosa, Ilex decidua, and (especially on lower slopes) Cornus drummondii and Aesculus pavia var. flavescens commonly occurring in the understory. These woodlands occur on rocky canyon slopes or on shallow soils that have developed over limestone; they are often interspersed with savannas or openings dominated by Schizachyrium scoparium, Bouteloua curtipendula ,and other characteristic species of the plateau.