Oenothera filipes (Spach) W. L. Wagner & Hoch. Threadstalk Gaura. Phen: Apr-Sep (-Oct). Hab: Longleaf pine sandhills, pine flatwoods, barrens, prairies, sandy fields, disturbed areas, and clearings. Dist: SC west to n. TN and s. IN, south to ne. FL and e. and w. LA.

Origin/Endemic status: Endemic

Synonymy: = Fl4, FNA10, K3, K4, Wagner, Hoch, & Raven (2007); = Gaura filipes Spach – C, G, Il, K1, Q, RAB, Tn, W, WH3; = Gaura michauxii Spach – S; > Gaura filipes Spach var. filipes – F, Munz (1965); > Gaura filipes Spach var. major Torr. & A.Gray – F, Munz (1965)

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