Hedeoma hispida Pursh. Rough Pennyroyal, Mock Pennyroyal. Phen: May-Aug. Hab: Prairies, Disturbed areas, pastures, barrens, granitic flatrocks, especially in exposed, thin soil; apparently adventive eastwards in the eastern portions of our area from farther west, but the native distribution unclear. Dist: BC and NM east to ME, MA, PA, VA, NC, SC, and GA. Irving (1980) shows H. hispida east to e. Panhandle FL, c. AL, nc. TN, and s. OH; some of the scattered records further east are adventive. It may be recently arrived farther east or was previously overlooked. First reported for SC by Hill & Horn (1997).

Origin/Endemic status: Native

Synonymy: = Ar, C, F, Fl6, G, Il, K1, K3, K4, Mi, NcTx, NE, NY, Tn, WV, Irving (1980); = Hedeoma hispidum – GrPl, Pa, Tx, WH3, orthographic variant; = n/a – RAB

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Heliophily: 8