This segregate of clinopodia occurs is largely restricted to hills of the central Interior Low Plateaus in Tenn., Ky. and Ind. It was recognized informally as "sororia" by R. Simmers in the 1980s, but still remains unpublished. Together with austroappalachiana (Floden 2015), brevis (Weakley et al., in press) and allied Ky. plants, these taxa differ from clinopodia and its closest relatives as follows: style usually with hairs (versus glabrous); corollas more or less uniformly white to pink/purple (versus maculate or unevenly flushed with pink); calyx lobes with 2-6 distinctively large stipitate/pustulate anthocyanic glands (in addition to any smaller glandular hairs); leaves generally narrower (mostly 1-3 cm versus 1-5 cm), and with petioles less than 2 cm (versus up to 3-4 cm); plants typical of subxeric to xeric open woodland and grassland (versus mesic to submesic or subxeric). In contrast to austroappalachiana and brevis, "sororia" has calyx 7-8 mm long (versus up to 12 mm), the lobes ca. 0.5-1 mm long (versus 0.8-1.5 mm), usually green to stramineous (versus purplish); leaf blades mostly ovate (versus ovate-elliptic or lanceolate), mostly 2-4 cm wide (versus 0.5-2.5 cm), usually with sharp serrations ca. 1-2 mm high (versus 0-1 mm), usually with long hairs on major veins below (versus glabrous), upper surface usually drying to greyish-green except for purplish midrib (versus deeper green); stems usually remaining greenish except for purple angles in full sun (versus often purplish throughout), the uppermost internode usually with punctate glands (versus lacking). A few colls. suggest hybridiization with fistulosa or "maxmedleyi".