Stylisma pickeringii (Torrey ex M.A. Curtis) A. Gray var. pattersonii (Fernald & Schubert) Myint. Patterson's Dawnflower. Phen: May-Sep. Hab: Longleaf pine sandhills, dry sandy prairies, open sandy woodlands, other dry sandy habitats. Dist: IL and IA south through KS and OK to w. LA and e. TX; disjunct in w. MS (the material somewhat ambiguous as to varietal affinity).
Origin/Endemic status: Native
Syn: = Ar, GrPl, Il, K1, K3, K4, NcTx, Tx, Myint (1966); < Bonamia pickeringii – Shinners (1962d), Wilson (1960b); < Stylisma pickeringii – S