THE NURSERY-LIST 303 



Dodecatheon (Shooting-Star). Primulacea. 



Propagated slowly by seeds. The roots may be divided in 

 spring or autumn. Cuttings of the whole root can be used effec- 

 tively, the root being taken off the crown, planted upright, and 

 covered with the sandy soil. 



Dolichos. Leguminosce. 



Increased readily by seeds, which should be handled same as 

 beans. Sometimes cuttage or layerage is employed for the more 

 woody kinds. See Pueraria for D. Thunbergianus. 



Doodia. Polypodiaceoe. 



Propagation by spores and division. See Ferns, page 312. 



Doronicum (Leopard's Bane). Composites 

 Multiplied by seeds and divisions. 



Dorstenia. Moracece. 



Propagated by seeds when procurable; division of the plant 

 when repotting. 



Doryanthes. Amaryllidacece. 



Propagated by suckers in pots ; they are produced after flower- 

 ing. 



Downingia (Clintonia of seedsmen). Lobeliacece. 



Annuals easily grown from seeds sown in the open or started 

 under glass. 



Draba (Whitlow-Grass). Cruciferce. 



By fall-sown or spring-sown seeds ; the perennials by division. 



Dracaena. Liliacece. 



Propagation as for cordyline, which see, page 288. 



Dracocephalum (Dragon's Head). Labiatce. 



The annuals are raised easily from seeds, sown in the open in 

 spring or started indoors. Perennials are handled by division or 

 by cuttings of growing wood in spring. 



Dracontium. Aracece. 



Propagation as for amorphophallus. See also Aracece, page 239. 



Dracunculus. Aracece. 



Propagation as for arum, by offsets of the tubers and sometimes 

 by seeds. See Aracece, page 239. 



