-270 THE VOYAGE OF H.M.S. CHALLENGER. 



Fournier. The form from all the other islands is Lycopodiwm clavatum, Linn., var. 

 magellanicum. 



Lycopodium cernuum, Linn. 



Lycopodium cernuum, Linn. ; Spring, Monogr. Lycopod., partie i., p. 79, et parfcie ii., p. 37; Fournier 

 in Comptes rendus, 1875, lxxxi., p. 1140; Reichardt in Verhandl. d. k. k. zool.-bot. Gesellsch. 

 Wien, xxi., Abhandl. p. 30. 



St Paul Island. — Near hot springs — Milne ; De VIsle. 



Widely diffused in warm countries, including Ascension and St Helena, though not the 

 Tristan da Cunha group. 



Milne (MSS. in Kew Library) states that this grew in soil at a temperature of 114° 

 Fahr. 



Lycopodium saururus, Lam. 



Lycopodium saururus, Lam., Encycl. Bot., iii. p. 653 ; Spring, Monogr. Lycopod., partie i., p. 21, et 



partie ii., p. 6. 

 Lycopodium insulare, Carmich. in Trans. Linn. Soc. Lond., xii. p. 509; Fournier in Comptes rendus, 



1875, lxxxi. p. 1141. 

 Lycopodium axillare, Roxb. in Beatson's St. Helena Tracts, p. 312. 



Amsterdam Island. — De VIsle. 



"Widely dispersed in Africa and America, and occurring in most of the islets from 

 Ascension to Kennielen. 



*& 



FILIOES. 

 Gleichenia polypoclioides, Sm. 



i :', :,■],, hi, i polypodioides, Sm. in Act. Taur., v. p 419 ; Hook., Sp. Fil., i. p. 3 ; Schkuhr., FiL, t. 149 ; 



Hook, and Bak., Synop. Fil., p. 11 ; Kuhn, Fil. Afr., p. 167. 

 Git icJienia argentea, Kaulf., Enum. Fil., p. 36 ; Fournier in Comptes rendus, 1875, lxxxi. p. 1141. 



Amsterdam Island. — Very abundant from an elevation of about 600 feet up to nearly 

 1G50 feet— De Vide. 



Previous to its discovery in Amsterdam Island, this fern was regarded as an endemic 

 African species. It is one of the commoner ferns in South Africa, extending northward 

 to Angola. Fournier records it from Australia, but among the copious specimens of this 

 species at Kew there is none from that country. Indeed, there is not a single species of 

 the subgenus Eugleichenia common to Australia and South Africa; and this subgenus is 

 confined to the Old World, while the subgenus Mertensia is generally spread in warm 

 countries, Gleichenia (Mertensia) dichotoma being almost universal. It is noteworthy 

 that Gleichenia polypodioides is the only species of the genus represented in our insular 

 floras from the Bermudas to Kerguelen Island. The Amsterdam specimens collected by 

 De l'lsle have fronds from six to seven inches hitrh. 



O 



