Perityle megalocephala (S. Watson) J.F.Macbr. [ Laphamia megalocephala S. Watson]
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Perityle megalocephala (S. Watson) J.F.Macbr. [ Perityle megalocephala (S. Watson) J.F.Macbr.] [Compositae]
J.T. Rothrock, Rep. U.S. Geogr. Surv., Wheeler: t. 11 (1878) [W.H. Seaman]