Orbexilum lupinellus (Michaux) Isely. Subgenus: Orbexilum. Phen: May-Jul; Jul-Oct. Hab: Longleaf pine sandhills. Dist: A Southeastern Coastal Plain endemic, ranging from sc. and se. NC, south to c. peninsular FL, s. AL, and e. GA.
Origin/Endemic status: Endemic
Taxonomy Comments: The epithet 'lupinellus' is a noun in apposition and is therefore not declined according to the genus's gender; 'lupinellus' is the correct epithet and spelling in any genus.
Other Comments: The very peculiar leaves, palmately 5-7-foliolate with "oblinear" leaflets, make the species unmistakable. First reported for SC by McMillan et al. (2002).
Synonymy: = K4, SE3, WH3, Grimes (1988), Grimes (1990), Isely (1998), Turner (2008); = Orbexilum lupinellum (Michx.) Isely – K1, K3, orthographic variant; = Psoralea lupinellus Michx. – RAB; = Rhytidomene lupinellus (Michx.) Rydb. – S