United States, Oklahoma, Johnston Co., Baum limestone outcrop at junction of Camp Creek and tributary; 1.3 mi. S of US 709 on Mannsvile-Simpson Road. T4S, R4E, Sec. 28, SEĀ¼.
36.3159 -95.7492
229 meters
750 ft
On drier, rocky sites with Aristida longiseta, Erioneuron pilosum, Andropogon scoparius; rocky thin soil; no overstory on hill; definite patterns of grass.