Pityopsis ruthii (Small) Small. Phen: Aug-Oct. Hab: Flood-scoured rocks along rivers. Dist: Restricted to rocks within the flood zone of the Hiwassee and Ocoee rivers, Polk County, TN; it should be sought in adjacent sw. NC.
Origin/Endemic status: Endemic
Synonymy: = FNA20, K1, K3, K4, S, Tn, Nesom (2019a), Semple & Bowers (1985); = Chrysopsis ruthii Small – SE1; = Heterotheca ruthii (Small) V.L.Harms – Bowers (1972)