Sporobolus ozarkanus Fernald. Phen: Aug-Oct. Hab: Limestone glades, diabase glades. Dist: KY west to KS, south to e. TN, AR, and TX; disjunct in c. NC.
Origin/Endemic status: Native
Other Comments: In Granville County, NC, it is associated (on glades of diabase, a mafic rock) with other taxa with affinities to midwestern glades and prairies: Solidago jacksonii, Solidago ptarmicoides, Baptisia aberrans, Symphyotrichum depauperatum, Silphium terebinthinaceum, Parthenium auriculatum, Ruellia humilis, and others. S. ozarkanus, S. neglectus, and S. vaginiflorus form a still very poorly understood complex.
Synonymy: = C, ETx1, F, G, HC, Il, K1, K4, Mo1, NcTx, Va; = n/a – RAB; = Sporobolus vaginiflorus (Torr. ex A.Gray) Alph.Wood var. ozarkanus (Fernald) Shinners – Ar, FNA25, K3, Tn; < Sporobolus vaginaeflorus – Tx