DILLENIA DISPORUM. 227 



Dillenia. Dilleniacece. 



Seeds, which, however, are grown with much difficulty. 

 Cuttings of half-ripened wood may be placed in sani, 

 under a frame, in bottom heat. 



Dimorphanthus. See Aralia. 



Dion, Platyzamia. Cycadacece. 



Propagated by seed. See Cycas. 



Dionaea. Droseracece, 



Propagated sometimes by seed ; usually by dividing 

 the plants. 



Dioscorea (Yam). Dioscoreacecs. 



The tubers may be divided in autumn or spring, when 

 not growing. Start in heat. 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. 



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 bot- 

 tom heat during spring. See also Persimmon. 



Dipladenia. Apocynaceiz. 



In spring, when the plants commence new growth, cut- 

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

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

 good bottom heat. 



Diplothemium. Palmacea. 



Propagation is effected by seeds. 



Dirca. Thymelceacets . 



Increased by seeds or layers. 



* 



Disa. Orchidacecs. 



D. grandiflora and others of similar habit are propa- 

 gated by offsets. These are best taken off about Decem- 

 ber, and treated like the old plants. (See under Orchids.) 



Disporum, including Prosartes. Liliacece. 



Seeds may be used ; or the plant may be divided in 

 spring before active growth commences. 



