Clinopodium arkansanum (Nuttall) House. Arkansas Calamint. Phen: May-Oct. Hab: Dry to moist limestone glades, chalk barren (MS). Dist: ON west to MN, south to w. NY, nw. PA, w. VA, WV, IL, c. TN, and s. WI; also in MO, OK, AR, and TX.

Origin/Endemic status: Native

Taxonomy Comments: There appears to be confusion in published literature and checklists about the identities and distributions of this taxon and C. glabellum.

Synonymy: = Ar, Il, K1, K3, K4, Mi, NY, Tn, Va, Cantino & Wagstaff (1998); = Calamintha arkansana (Nutt.) Shinners – NcTx, Pa, Shinners (1962a); = Satureja arkansana (Nutt.) Briq. – F, GrPl; = Satureja glabella (Michx.) Briq. var. angustifolia (Torr.) Svenson – C, G; < Calamintha arkansana (Nutt.) Shinners – GW2; < Clinopodium glabellum (Michx.) Kuntze – S; < Satureja arkansana (Nutt.) Briq. – Tx

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