OLEANDRA OLFEESIA ONYCHIUM. 



93 



Islands. Fronds about a foot high, bright green, lanceolate, 

 undivided ; margin entire. Stem and stalks black ; latter 

 covered beneath with brown scales. Spore-masses scattered. 



Like the other kinds, it can 

 be readily divided. 



There are several other 

 species in cultivation, all 

 having creeping rhizomes, and 

 resembling each other in the 

 form of the fronds : O. arti- 

 culata, from Ceylon ; O. hir- 

 tella ; 0. Natalensis, from 



Port Natal. 



OLFEKSIA. 



OLFEESIA CEEVINA, Fig. 49. 

 The only species in cultiva- 

 tion. The first, or generic, 

 name is commemorative of Olfers, a German. The second 

 means stag-horned, in allusion to the appearance of the fertile 

 fronds. Both sterile and fertile fronds are pinnated ; the 

 former are beautifully veined, and the latter are covered with 

 spore-masses. It is a fine Fern, and grows about 2 feet 

 long. We have increased it readily by dividing the creeping 

 rhizome, preserving a frond and growing-point to each division. 



Fig. 48. Oleandra nodosa. (Part of 

 frond medium size.) 



ONYCHIUM. 



For a figure illustrative of the character of this genus, as 

 well as the derivation of the name, &c., see the Greenhouse 

 division. There are only two species in cultivation, one of 

 which must be grown in a stove, the other in the greenhouse. 



ONYCHIUM AUEATUM (Golden) .This Fern is a native of the 

 East Indian Islands. The fronds are 2 feet in height, and 



