Lupinus diffusus Nuttall. Phen: Mar-May; Jun-Jul. Hab: Longleaf pine sandhills, sandy roadsides. Dist: Se. NC south to s. FL, west to s. MS
Origin/Endemic status: Endemic
Other Comments: I concur with Duncan & McCartney (1992) in recognizing L. cumulicola Small of peninsular FL as distinct from L. diffusus. Moreover, Atchison et al. (2014) showed that at least one additional taxon (here listed as Lupinus species 1) should be segregated from L. diffusus s.l.
Synonymy: < Lupinus diffusus Nutt. – Fl3, K1, K3, K4, RAB, S, SE3, WH3, Isely (1998)