Corydalis halei (Small) Fernald & Schubert. Southern Corydalis. Phen: Feb-May; Apr-Jun. Hab: Sandy roadsides and disturbed areas. Dist: E. NC south to FL, west to TX, and inland north to IL, MO, and OK.

Origin/Endemic status: Native

Taxonomy Comments: Fernald (1950) and Small (1933) recognized this taxon as a species distinct from C. micrantha; Ownbey reduced it to a subspecies, citing inadequate morphological differences and some alleged intermediates in OK and MO. The two taxa appear readily separable on morphological, ecological, and geographical grounds; species status seems warranted.

Synonymy: = Capnoides halei Small – S, S13; = Corydalis micrantha (Engelm. ex A.Gray) A.Gray ssp. australis (Chapm.) G.B.Ownbey – FNA3, GrPl, K1, K3, K4, NcTx, RAB, WH3, Ownbey (1947); = Corydalis micrantha (Engelm. ex A.Gray) A.Gray var. australis (Chapm.) Shinners – Ar, C, Tx; < Capnoides micrantha (Engelm. ex A.Gray) Britton, misapplied; > Corydalis campestris (Britton) J.Buchholz & Palmer – F; > Corydalis halei (Small) Fernald & Schub. – F, Il; < Corydalis micrantha (Engelm. ex A.Gray) A.Gray – G; > Corydalis micrantha (Engelm. ex A.Gray) A.Gray ssp. australis (Chapm.) G.B.Ownbey – Il

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Heliophily: 7