PELLAEA dura var. dura [family ADIANTACEAE], ; Schelpe in Contr. Bolus Herb. 1: 79 (1969); W. Jacobsen, Ferns S. Afr.: 273 (1983)
Pteris dura Willd. [family ], Sp. Pl. ed. 4, 5: 376 (1810)
Allosorus durus (Willd.) Presl [family ADIANTACEAE], Tent. Pterid.: 153 (1836)
Litobrochia dura (Willd.) Moore [family PTERIDACEAE], Ind. Fil.: 44 (1857)
Pteridella dura (Willd.) Kuhn [family ADIANTACEAE], in von der Decken, Reisen Ost Afr. 3, 3 Bot.: 14 (1879)
Pteridella holstii Hieron. [family ADIANTACEAE], in P.O.A. C: 78 (1895);. Type: Tanzania, Lushoto District, W Usambaras, Mtai, Holst 2543 (B, lecto., K!, isolecto.)
Pellaea holstii (Hieron.) Diels [family ADIANTACEAE], E. & P. Pf. 1(4): 267 (1899); Hieron. in V.E. 2: 38 (1908); F.D.-O.A.: 37 (1929)
Pellaea dura (Hieron.) Schelpe var. holstii [family ADIANTACEAE], in Contrib. Bolus Herb. 1: 79 (1969); Schippers in Fern Gaz. 14: 181 (1993)
Pellaea doniana [family ADIANTACEAE], sensu Peter, F.D.-O.A.: 36 (1929) pro parte quoad saltem 11719, non Hook. (Peter cites other specimens I have not seen)
Pellaea schweinfurthii [family ADIANTACEAE], sensu Schippers in Fern Gaz. 14: 181 (1991) pro parte