United States, Texas, Bexar, Government Canyon State Natural Area. Twin Oaks Trail near Comanche Cut.
29.57583 -98.76472
Highly disturbed area of thin black soils over limestone. Oak-juniper woodland of Quercus fusiformis, Juniperus ashei, Rhus virens, Diospyros, and Celtis. Erect perennial. Culms 40 cm tall or more. Spikelets reddish, glandular.