Cystopteris tennesseensis Shaver. Phen: Apr-Jun. Hab: Moist to dry outcrops of calcareous rocks, including coquina limestone (‘marl’) in the outer Coastal Plain. Dist: PA, KY, IL, WI, and IA south to NC, nw. GA, n. AL, AR, and OK.
Origin/Endemic status: Native
Syn: = Ar, C, FNA2, GrPl, Il, K1, K3, K4, Mo1, Pa, RAB, Tn, Va, W; = Cystopteris ×tennesseensis – WV, Shmakov, Batkin, & Vaganov (2018)