Acrostichum rufum Linnaeus, Systema Naturae, ed. 10, 2: 1320. 1759.

["Habitat in America."] Sp. Pl., ed. 2, 2: 1526 (1763). RCN: 7777.

Lectotype (Tryon in Contr. Gray Herb. 194: 82. 1964): [icon] "Filix minor ruffa lanugine tota obducta, in pinnas tantum divisa, raras, non crenatas subrotundas" in Sloane, Voy. Jamaica 1: 87, t. 45, f. 1. 1707. - Typotype: Herb. Sloane 1: 96 (BM-SL) .

Current name: Hemionitis rufa (L.) Sw. ( Pteridaceae).

Note: Although treated as a new combination based on Pteris rufa L. (1753) by some authors, this is unjustified as there is no direct reference to the earlier name in the protologue of A. rufum, and P. rufa also appears in the same work (1759), as noted by Tryon & Stolze (in Fieldiana, Bot. 22: 47. 1989). Linnaeus did, however, treat the two names as synonymous in 1763. See also Lellinger (in Mem. New York Bot. Gard. 23: 9. 1972) who indicated what is evidently 1245.6 (LINN, though cited from BM) as the type. This choice is, however, pre-dated by that of Tryon.