Oenothera heterophylla Spach ssp. heterophylla . Phen: Jul-Oct. Hab: Sandy oak woodlands, also roadsides and other disturbed areas. Dist: Sw. AR and ne. TX south to sw. LA and e. TX.
Origin/Endemic status: Endemic
Synonymy: = Ar, FNA10, K3, K4, Wagner, Hoch, & Raven (2007); = n/a – C; < Oenothera heterophylla Spach – NcTx, Tx