248 MR. R. N. RUDMOSE BROWN ON 
l ad 5 cm., tenues virides nudi; frondes oblongo-deltoides 
bipinnate subcoriacee ;  pinnz superiores ssepe in pinnulas 
indistincte divise; pinnule cuneate vel late obovate, margine 
exteriore rotundato; pinnularum vens dichotoms; sori mediani 
lineares. 
This species is very near to Asplenium Ruta-muraria, from 
whieh it chiefly differs in having its pinnules always entire. 
Unfortunately none of the specimens show the sori in very good 
condition. 
Endemic in Gough Island. It is plentiful on the stems of 
tree-fern (Lomaria Boryana), but not common elsewhere. 
POLYPODIUM aAQUILINUM, Thou. Esq. Fl. Trist. p. 32; Hook. § 
Baker, Syn. Fil. p. 311; P. acunhianum, Carmich. fide 
Hemsl. Chall. Bot. i. 11. p. 167. 
Nephrodium aquilinum, Hemsl. Chall. Bot. l. c. t. 39. 
Common. 
Distribution. Tristan da Cunha, Nightingale and Inaccessible 
Islands ; Amsterdam Island ? 
POLYPODIUM AUSTRALE, Mett. Polypod. p. 36; Hook. & Baker, 
Syn. Fil. p. 322; Hemsl. Chall. Bot. i. 11. p. 168. 
Grammitis australis, R. Br. Prodr. Fl. Nov. Holl. p. 146; 
Carmich. in Trans. Linn. Soc. Lond. xii. (1818) p. 510. 
G. magellanica, Desv. Journ. Bot. ii. (1814) p. 275. 
Only one specimen of this was found. 
Distribution. Tristan da Cunha. Tierra del Fuego, Australia, 
New Zealand, and Marion Island. 
For the determination of this species I am indebted to Mr. C. 
H. Wright of the Royal Gardens, Kew. 
AsPIDIUM CAPENSE, Willd. Sp. Pl. v. p. 267; Hook. § Baker, 
Syn. Fil. p. 254. A. coriaceum, Swartz, Prod. Fl. Ind. Occ. 
p. 1335; Mook. Sp. Fil. iv. p. 325; Carmich. in Trans. Linn. 
Soc. Lond. xii. (1818) p. 511; Hemsl. Chall. Bot. i. 11. 
p. 167. 
Polypodium calyptratum, Thou. Esq. Fl. Trist. p. 33. 
Fairly common. 
The Gough Island specimens are larger than the Tristan da 
Cunha ones of Moseley, and in size approximate more to the 
specimen of De l'Isle's from Amsterdam Island. 
