REPOKT OX THE BOTANY OF THE ATLANTIC ISLANDS. 101 



Acrostichum (Elaphoglossum) conforme, Swartz. 



Acrostichum (Elaphoglossum) conforme, Swartz, Synop. Fil., pp. 10 et 192, t. 1, fig. 1 ; Hook., Sp. 

 EL, v. p. 198; Hook, and Bak., Synop. Fil., p. 401 ; Kuhn, FiL Afr., p. 43; Melliss, St Hel., 

 p. 352. 



St Helena. — Indigenous. On the stems of the Cabbage-trees on Diana's Peak — 

 Burchell, 178; very rare, in shaded woods of Diana's Peak — Hooker; on Dicksonia 

 arborea, Diana's Peak — Melliss; without locality — Haughton; Morris, in 1883. 



A very widely diffused fern in warm regions of both the eastern and western hemi- 

 spheres, and one of those found in Tristan da Cunha. 



Melliss states that it is somewhat rare in St Helena. It is probable that this rather 

 than Acrostichum subdiaphanum is the Acrostichum lanceolatum of Roxburgh. Fe"e 

 (Acrost., p. 36, t. 7, fig. 1) records his Acrostichum laurifolium (which is different from 

 Acrostichum laurifolium, Thouars. a synonym of Acrostichum conforme) from Bourbon 

 and St Helena: the latter habitat beino- doubtless an error. 



OPHIOGLOSSACE.E. 



Ophioglossum vulgatum, Linn., var. 



Ophioglossum vulgatum, Linn., Sp. PI., ed. 1, p. 1062, var. ; Hook, and Bak., Synop. Fil., p. 445; 



Melliss, St Hel., p. 355. 

 Ophioglossum opacum, Carmich. in Trans. Linn. Soc. Lond., xii. p. 509 ; R. Br. ex Kuhn, Fil. Afr., 



p. 178. 

 Ophioglossum lusitanicum, Koxb. in Beatson's St Helena Tracts, p. 315? 



St Helena. — Indigenous. In the driest and most sterile hills — Burchell, 196 ; with- 

 out locality — Haughton ; Morris, in 1883. 



Melliss records it as plentiful on the barren rocky outskirts of the island, principally on 

 the northern side. It is universally spread in tropical, temperate, and antarctic regions. 



The form collected by Haughton in St Helena is exactly like Carmichael's from Tristan 

 da Cunha, and Kuhn follows the latter in regarding it as a distinct species. 



CRYPTOGAMS.— CELLULARES. 



MUSCI. 1 



Dicranella (§ Campylopodium) proscripta, Hornsch. 



Dicrunella (§ Campylopodium) proscripta, Hornsch. in Hor. Phys. Berol., p. 60, t. 12 (Didymodon) ; 



Mitt, in Melliss's St Hel., p. 357. 

 Leptotrichum hornschuchii, C. Miill., Synop. Muse. Frond., i. p. 450. 

 Dicranella cygnea, J. Angstr. in Hedwigia, 1875, p. 92. 



St Helena. — Endemic. Common, and gathered by all collectors. 



1 Mainly extracted from Mitten's enumeration of the Musci and Hepaticai in Melliss's St Helena. 



