GLEICHENIA HYMENOPHYLLUM. 



143 



3 feet. The spore-masses are upon the surface of the frond, 

 and not in a cavity. It is sometimes known as Gr. circinalis. 



Gr. EUPESTEIS (Rock). The fronds of this species are thick, 

 and might almost be called leathery; they are light green 

 above, and whitish on the under side. It is much rarer than 

 most of the other kinds, and will probably long continue so. 



Gr. SEMIVESTITA (Half-clothed). This is probably a variety 

 of Gr. microphylla, which it somewhat resembles. Its stalks 

 are rather more downy. It grows to a height of about a yard. 



G. SPELUNC-E (Cave, probably from its growing in^aves or 

 dells). This is another rare and very beautiful Fern. The 

 fronds are very glaucous, almost white beneath, giving it a 

 lovely appearance. It is a very distinct plant, and one of the 

 best of the family. 



HYMENOPHYLLTJM. 



HYMENOPHYLLUM DEMIS- 

 SUM (Hanging-down). A very 

 beautiful Filmy Fern fromNew 

 Zealand. The fronds are a 

 foot or more in length, twice- 

 divided, smooth, and half 

 transparent. For culture see 

 what is said of Trichomanes 

 in the Stove division. 



H. DILATATUM (Spread- 

 out), Fig. 68. Native of New 

 Zealand. Requires protection 

 in the winter, and succeeds 

 best treated as a greenhouse 

 Fern. The fronds are some- 

 times as much as 18 inches in 

 length. 



Several nurserymen have 

 recently imported new species of this beautiful genus from 



Fig. 68. Hymenophyllum dilatatum. 

 (Pinna natural size; indusium mag- 

 nified and turned.) 



