HEPATICiE COLLECTED IN CENT HAL AEKICA. 307 



seems to vary with the age of the capsule ; from conic it becomes 

 iu age hemispherical. 



B. (§ Eubrtum) eoseum, Schreb. 



Sab. Kilimanjaro, with perfected fruit, Bishop Hannington ; 

 Usagara Mountains, barren, Mr. Last, 



r 



B, integrifoliumy Eehm., from Natal, appears to be not different, 

 the foliage being dentate, as usual in European specimens of 

 B. roseum. It was gathered also in Sierra Leone by Barter and 

 in Madagascar by Dr. Meller ; and it is most probable that the 

 Indian B. giganteum^ Hook., and the S. -American B. grandi- 

 folium^ Tayl., are but states induced by some different conditions 

 of one widely spread species, 



B. COMMERSOI^II, Scliw. 



Sah, Elilimanjaro, barren. 



Prom this B. umh^aculum^ Burchell, differs scarcely at all. 

 In some state the species appears spread over the Southern 

 hemisphere. 



B. ALPiKUM, Ltnn. 



Sab. Usagara Mountains, barren, BisTioj) Hannington. 

 Of the usual colour and appearance ; this handsome species ia 

 found in the Cameroon Mountains and in S. Africa. 



B. ARGEKTEUM, Linn.^ var. argteotrichum. — B. (§Argyro- 

 bryum) argyrotrichum, C. MulleTy Linn. 1875, p. 385. 



Sab. Usagara Mountains, Bishop Hannington. 



At first sight this differs greatly from the common states of 

 the species as seen in Europe, but the differences seem com- 

 pletely connected by specimens from the Nilgiri Mountains, and 

 in one from Abyssinia both states of the foliage are observable on 

 the same specimen. 



B. C0B0N"ATUM, Schw. 



Sab. Usagara Mountains. 



MNirM, Linn. 



w 



M, EOSTBATUM, Schvad, 



Sab. Kilimanjaro, without fruit. Bishop Hannington. 

 Inflorescepce as usual and not in any way differing from 

 European states. 



