Kallstroemia maxima (Linnaeus) Hooker & Arnott. Greater Caltrop. Hab: Disturbed areas, dunes; native status uncertain, probably native in FL peninsula, but probably early introduced in more northern parts of our area from the Neotropics. Dist: SC south to FL; West Indies; Mexico (Sinaloa and Tamaulipas) south through Central America to northern South America (Venezuela, Colombia). The native status of this species in the se. United States is uncertain; early collections from Charleston (Stephen Elliott) and Savannah suggest the probability of early introduction via ballast, at least north of the FL peninsula.

Origin/Endemic status: Native

Synonymy: = Bah, Fl3, FNA12, K1, K3, K4, Mex, RAB, S, Tx, WH3, WI, Porter (1969), Turner (2016); = n/a – Pa

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