Lithospermum subsetosum (Mackenzie & Bush) Weakley, Witsell, & D. Estes. Ozark Marbleseed. Phen: May-Jul. Hab: Calcareous glades and woodlands. Dist: MO south to AR and OK; disjunct in c. TN (Chester, Wofford, & Kral 1997) and ne. AL (Cumberland Plateau escarpment) (Datillo & Nestor 2011; D. Estes, pers. comm., 2011).

Origin/Endemic status: Native

Synonymy: = K3, K4, Tn, Weakley et al (2011); = n/a – C; = Onosmodium bejariense A.DC. var. subsetosum (Mack. & Bush) B.L.Turner – Ar, Turner (1995a); = Onosmodium molle Michx. ssp. subsetosum (Mack. & Bush) Cochrane – K1, Al-Shehbaz (1991), Cochrane (1976); = Onosmodium subsetosum – F, G; < Onosmodium molle Michx. – S

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