MOHRIA NEOTTOPTERIS NIPHOBOLUS. 149 



beautiful greenhouse Ferns, and deserve to be more generally 

 known than they are. 



MOHRIA ACHILLE^FOLIA (Yarrow-leaved). The name of 

 this plant gives a very good idea of the form of the fronds. 

 They are about 6 inches long, short-stemmed, and rising from 

 a tufted crown. The fertile fronds are longer and stand more 

 erect than the sterile fronds, which surround them. 



M. THUEIFRAGA (Frankincense). This very attractive and 

 "beautiful Fern is a native of South Africa. The fronds some- 

 what resemble those of the other species, but they grow to a 

 greater size, and their divisions are broader. Both of them 

 should be grown on a shelf near the glass. 



NEOTTOPTEKIS. 



NEOTTOPTEBIS VTJLGARIS (or N. australasica] , the common 

 and beautiful Bird's-nest Fern, which is described among the 

 Stove plants, will succeed pretty well in a greenhouse, and 

 should form one of the collection, however small it may be. 



NIPHOBOLUS. 



Whoever grows any species of this genus may be much 

 gratified by a microscopic view of the under side of the fronds. 

 There will, when so viewed, be seen a white, starry set of 

 short, fine hairs, giving the leaflet a mossy appearance. 



NIPHOBOLUS LINGUA (Tongue-like). A Chinese Fern, of a 

 neat habit, but rarely seen in fructification. The only time we 

 ever saw it was on the rockwork in the Fern-house in the 

 Botanic Gardens at Sheffield. We imagine the reason has been 

 because it has generally been kept too warm in the stove. 

 Fronds simple and of two kinds. Barren fronds long, oval- 

 shape, with a sharp point, growing 9 inches high. Fertile fronds 

 turned-up at the edge a little, and rather less than the other. 

 Spore-masses thickly strewed on the under surface, giving the 



