Flora of the Southeastern United States
2022 Edition

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OPHIOGLOSSACEAE

Ophioglossum engelmannii Prantl. Engelmann’s Adder’s-tongue, Limestone Adder’s-tongue. Phen: Dec-Jun. Hab: Dry barrens and glades over calcareous rocks, very rarely on granite. Dist: W. VA, IN, IL, KS, and AZ south to Panhandle FL and TX; Mexico and Central America.

Origin/Endemic status: Native

Syn: = Ar, C, ETx1, F, Fl1, FNA2, G, GrPl, Il, K1, K3, K4, Meso1, Mo1, Pa, Sf, Tn, Tx, TxFerns, Va, W, WH3

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image of plant© Joey Shaw
image of plant© Richard & Teresa Ware
image of plant© Richard & Teresa Ware
image of plant© Bruce A. Sorrie