TRICHOMANES. 193 



broader form. The name Andrewsii is given to it in 

 compliment to W. Andrews, Esq., of Dublin, by whom it 

 was first brought into notice. 



The Sister Isle now claims, so far as the British Isles 

 are concerned, sole parentage of this lovely, half-trans- 

 parent species ; there, amidst dripping rocks, it thrives 

 with a degree of luxuriance which charms every one who 

 has seen it creeping over their shelving ledges. It is said 

 to have been formerly found in Yorkshire. The same 

 species is widely distributed in the warmer parts of the 

 world. 



The rarity and elegance of this plant make it a favourite 

 species for cultivation. The conditions of success are, a 

 close atmosphere, shade, moderate warmth, constant but 

 not stagnant moisture, and a porous surface to which the 

 roots may cling. 



Among the many names which have been applied to this 

 plant, the following are the most likely to occur in English 

 books : — Trichomanes speciosum, Tricliomanes brevisetum^ 

 Trichomanes alatum, and Hymenophyllum alatum. 



