178 THE NURSERY-BOOK. 



Dionaea. Droseracece. 



Propagated sometimes by seed ; usually by dividing the 

 plants. 



Dion, Platyzamia. Cycadacece. 



Propagated by seed. 

 Dioscorea (Yam). Dioscoreacea. 



The tubers may be divided in autumn or spring, when not 

 growing. Seeds are sometimes used, so are the tubers 

 which form in the axils by the leaves. Stove species can be 

 propagated by cuttings of the half-ripened wood. 



Diosma. Rtitacece. 



Cuttings in sandy peat, and under a frame placed in very 

 gentle heat, will soon root. 



Diospyros (Date Plum, Persimmon). Ebenacece. 



Seeds are used for the hardy species. Also by cuttings of 

 half-ripened shoots. Those requiring stove heat strike best 

 from ripened shoots, placed in sand in a brisk bottom heat 

 during spring. See also Persimmon. 



Dipcadi, Uropetalum. Liliacece. 



Increased by offsets in spring. 

 Diplacus. See Mimulus. 

 Dipladenia. Apocynacece. 



In spring, when the plants commence new growth, cuttings 

 from the young shoots are made. These, or single eyes, 

 should be placed in a mixture of sand and peat, in good 

 bottom heat. 



Diplazium. See Ferns. 

 Diplothemium. Palmce. 



Propagation is affected by seeds. 

 Dipteracanthus. See Ruellia. 

 Dirca. Thymelece. 



Increased by seeds or layers. 

 Disa. Ore hide ce. 



D. grandiflora and others of similar habit are propagated 

 by offsets. These are best taken off about December, and 

 treated like the old plants. (See under Orchids.) 



Disocactus. See Phyllocactus. 



