THE BOTANY OF OOUOH ISLAND. 41 



AsPI.KNIt'M ALVARKZBN8B, Rud. Br., Sp. DOV. (Plate IV.) 



II i la parva, raudex brcvis, paleis pnucis sparsis ; stipites 1 ad 5 cm., tcnues viridcs 

 ninli ; frondes oblongo-deltoides bipinnatiu subcoriaceae ; pinnae superiores saepe in 

 piiiuiilas indiHtincte divisae ; piunuloe cuneatea vel late obovatae, margioe cxteriore 

 rotundato; venae pinnularum dichotomic; sori median! lineares. 



This sj>ecio8 is very near to Aspleniwn llntn-muraria, from which it chiefly differs 

 in having its pinnules always entire. Unfortunately none of the specimens show the 

 sori in very good condition. 



Endemic on Gough Island. It is plentiful on the stems of tree-ferns (Lomaria 

 /)';//"""). but not common elsewhere. 



POLYPODIDM AQUILINUM, Thou. Esq. Fl. Trist., p. 32 ; Hook, and Baker, Syn. Fit., 

 p. 311 ; P. acunhianum, Carmich. fide. Hemsl. Chall. Bot., i. 11. j. 167. 



Nephrodium aquilinum, Hetusl. Chall. Bot., loc. cit., t. 39. 



Common. 



Distribution. Tristan da Cunha, Nightingale and Inaccessible Islands ; Amsterdam 

 Island (?). 



POLYPODIUM AUSTRAi.K, M>tt. f',>/ypod., p. 36 ; Hook, and Baker, Syn. Fil., p. 322 ; 

 Hemsl. Chall. Bot., i. 11. p. 168. 



Grammitis australis, Jf. lit: Pnxlr. /'/. \,: //.//., p. 146; Carmich. in Trans. 

 Linn. Soc. Lond., xii. (1818), p. 510. G. magellanica, Desv. Jouni. Bot., Hi. (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. PI, v. p. 267 ; Hook, and Baker, Syn. Fil., p. 254. 

 A. coriaceum, Swartz, Prod. Fl. Ind. Occ., p. 133 ; Hook. Sp. Fil., iv. p. 32 ; Carmich. 

 in Trans. Linn. Soc. Lond., xii. (1818), p. 511 ; Hemsl. Chall. Bot., i. H. 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 1'Isle's from Amsterdam 

 Island. 



Distribution. Tristan da Cunha ; America south of Cuba, South Africa, Mascarene 

 Islands, Amsterdam Island, Australia, and Polynesia. 



ACROSTICHUM CONFORMS, Swartz, Syn. Fil., pp. 10 and 192, t. 1, fig. 1 ; Carmich. 

 in Trans. Linn. Soc. Lond., xii. (1818), p. 509 ; Hook, and Baker, Syn. Fil., p. 401 ; 

 Hemsl. Chall. Bot., i. n. p. 169. A. laurifolium, Thou. Esq. Fl. Trist., p. 31. 



VOL. ill. 



