the Island of Tristan da Cunha, t^c. 513 



50. LoMAUiA ANTARCTICA, frondibus pinnatis, pinnis serai- 



oblongis obtiisis integris: terminali breviore, involucris 

 eroso-incisis. 

 Acrostichum polytrichoides. Aubert op. cit. p. 32. tab. 2. 

 On the most barren parts of the plain. 



51. Pteris vespertilionis (2. Br. Prodr. 154. 



Grows in the wood : not common. 



52. Adiantum iETiiioPicuM. Willd. Sp. PI. v. 452. Aubert 



op. cit. p. 34. 

 In the ravines. 



53. ViTTARiA sTRicTA, frondibus linearibus acutis strictis, so- 



ns intramarginalibus. 

 Pteris.'' vittarioides. Aubert op. cit. p. 31. tab. 1. 

 Grows in the wood. 



54. Trichomanes angcstatum, frondibus elongato-lanceolatis 



glaberrimis bi-tripinnatifidisve, pinnulis linearibus integer- 

 rimis, involucris alatis turbinatis : ore dilatato. 

 On the rocks. 



55. Hymenophyllum ;ebuginosum, frondibus lanceolatis bi- 



pinnatifidis hirsutis, pinnulis bifidis linearibus, stipitibus 

 filiformibus. 

 Trichomanes aeruginosum. Aubert op. cit. p. 34. 

 On the rocks. 



I have nothing to remark regarding the Mosses and Lichens, 

 not having made any memoranda of them. 



XXX. Some 



