HEPATIC^ COLLECTED IN CENTRAL AFRICA. 327 



Frulla-n-ia axgulata, Mitt, in Journ, Linn. Soc. vii. p. 169. 

 Sab. Usagara Mountains. 



r. replicata, JVees. 



Hab. Gold Coast, Capt, Burton and Com, Cameron. 



Metzgeria, Raddi, 



M. ruRCATA, Linn. 



Ilab. Usagara Mountains. 



M. MTRiAPODA, Lindlerg, 

 Hah. Usagara Mountains. 



CrxT'KOiiUj'SL^ Kunze^ Gottsclie^ Lindenb.et Nees^ Syn. 



Sep. p. 577. 



Synbymenium, Griffith y Notul. p. 344. 

 Eiccia, DicJcson^ fasc. 4. 



C. AERiCA^'UM, sp. n. Sporis Isevibus; froudes tenerrima pal- 

 lide viridia sicca chartacea laxe areolata dentes capsular octo 

 e sericbus sex cellularum fuscarum conditi; sporse fuscse sub- 

 hemispha^ricie depressse, margine rotundatse. 



Sab. Usagara Mountains, Bishop Sanningfon. 



So far as can be seen in the small quantity obtained, this 

 species is entirely of the same habit and structure as the Indian 

 G. aureonitensy Griff. Icon. 69. D. ii. It differs in its smooth 

 epores and probably in the shorter teeth-like divisions of the 

 apex of the capsule; but both species agree in having the in- 

 volucra situate in the axil of tlie marginal divisions of the edge 

 of the fronds, as represented by Griffith, and is also shown in the 

 figure given by Dickson of his Biccia spuria^ fasc. 4, t, ii, fig, 16, 

 The plants appear to grow in their earlier stages radiating from 

 a centre, but soon become confused from the lobes of the same 

 or adjacent individuals growing over them ; and as the fructifi- 

 cation is concealed from view above, they might be readily passed 

 over as the prothallus of some fern. The areolation is of so loose 

 and tender a substance that it revives after desiccation very irre- 

 gularly or not at all. 



Griffith had the opportunity of examining the Indian species in 

 a living state, and his original drawing has no doubt been so 

 modified by the native artist that the mouth of the involucre is 

 represented as a globular body opening by fissures of which two 



