FERNS AND LYCOPODS 



393 



Cyrtomium Rochfordianum 

 In 4-in. pots. Useful as table fern and for filling in. 



made of wire should be selected, so that the rhizomes, as they 

 lengthen, may be pegged against the side. D. parvula is an exceed- 

 ingly pretty dwarf growing species for a warm greenhouse. D. 

 Mariesii is the species used in making up "Fern Balls." It is decidu- 

 ous and should be kept moist enough in Winter to prevent the 

 rhizomes from shrivelling. D. pallida {Mooreana) is a desirable 

 plant for house decoration, but is not grown in quantity, owing to 

 the difficulty of getting up a large stock within a reasonable time. 

 Those in a starved condition make the best stock plants. 



Propagation. Spores sown in a mixture of moist sphagnum, 

 sand and leafmold grow readily. The large plants while dormant 

 may be divided. 



DICKSONIA. The stems of D. antarclica are sometimes im- 

 ported in a dormant state. When placed in a cool, moist house in 

 pots only large enough to accommodate them, they usually start 

 into growth. 



Propagation. Young plants are raised from spores sown in a 

 cool, shaded greenhouse. They sometimes germinate freely sown 



