TAB. LX. 



Asplenium (Dare a) Mannii, Hook. 



Nanum, caudice filiformi sarmentoso Ionge repente intricate 

 eopiose radiculoso, stipitibus subaggregatis vix biuncialibus 

 gracilibus, frondibus biuncialibus oblongo-ovatis subcarnoso- 

 coriaceis viridibus bipinnatis, pinnis remotis, pinmilis subu- 

 nilateralibus, sterilibus linearibus obtusis, fertilibus apice 

 oblique semiovatis rostratis monosoris, involucro (ratione 

 plants) amplo laxe membranaceo. 



Hab. Peak of Fernando Po, elev. 3000 feet above the level 

 of the sea, epiphytal, Gustav Mann. 



Evidently one of the Darra-group of Asplenium, but ex- 

 tremely unlike any described species, though allied to A. 

 brachypterum of Kunze : yet it can hardly be a state of that ; 

 the caudex and pinnules and habit are so different. The for- 

 mer resembles a slender filiform stolon, forming dense copious 

 intricated masses, at distances throwing out tufted fibrous 

 roots, on the undersides, and a few clustered fronds on the 

 upper. The fertile segments with their oblique semiovate 

 apex almost exactly resemble in shape the Buxbaumia aplxylla 

 among mosses, and the delicate membranaceous involucre is 

 large and lax. The term pinnatifid is more applicable to 

 these fronds than pinnate : a single vein passes through the 

 centre and terminates in a clavate apex below the extremity 

 of each segment ; from the upper side this sorus arises. 



Tab. LX. Portion of a tuft of Asplenium Mannii, nat. size. 

 Fig. 1. Anterior side of a fertile pinna or segment, and/. 2„ 

 Posterior, or underside of ditto ; — magnified. 



Cent, 2, t. t 



