Acrostichum ebeneum Linnaeus, Species Plantarum 2: 1071. 1753.

"Habitat in Jamaicae sepibus humidiusculis." RCN: 7788.

Lectotype (Tryon in Contr. Gray Herb. 189: 60. 1962): [icon] "Filix non ramosa minima, caule nigro, surculis raris pinnulis angustis, raris, brevibus, acutis, subtus niveis" in Sloane, Voy. Jamaica 1: 92, t. 53, f. 1. 1707.

Current name: Pityrogramma calomelanos (L.) Link ( Pteridaceae).

Note: Tryon (in Contr. Gray Herb. 189: 60. 1962) designated the Sloane plate as lectotype, but subsequent study has shown that this belongs to the taxon known as Pityrogramma calomelanos (L.) Link, into the synonymy of which A. ebeneum should fall. However, Proctor (in Brit. Fern Gaz. 9: 220. 1965; Mem. New York Bot. Gard. 53: 125. 1989) rejected Tryon’s typification in favour of 1245.14 (LINN), a specimen of P. tartarea (Cav.) Maxon. As P. ebenea (L.) Proctor has been adopted for the latter in some works, Tryon (in Taxon 46: 339. 1997) proposed A. ebeneum for rejection. However, the Committee for Pteridophyta (in Taxon 54: 831. 2005) did not recommend rejection, confirmed by the General Committee (in Taxon 55: 800. 2006).