414 THE NURSERY-MANUAL 



suckers are mostly employed. The seeds of R. deliciosus and prob- 

 ably others require two years for germination. See Blackberry, 

 Dewberry, Raspberry, Wineberry. 



Rudbeckia (Cone-Flower). Composite. 

 Handled by seeds, division or cuttings. 



Ruellia. Acanthaceoe. 



Propagated by cuttings, in light rich soil under glass, whenever 

 the shoots are firm enough. 



Ruscus. Liliacece. 



Increased by root suckers ; also by seeds, when obtainable. 



Russelia. Scrophulariacece. 



Green cuttings under glass is the common method of propagation ; 

 seeds may be used, if to be obtained. 



Ruta (Rue). Rutacece. 



Propagated readily by seeds ; also handled by division and cut- 

 tings. For meadow rue, see Thalictrum. 



Sabal (Palmetto). Palmaceoe. 



Handled by seeds ; also by suckers, which should be taken when 

 about one foot long. If suckers have no roots, they must be carefully 

 handled. See Palms, page 377. 



Sabatia (American Centaury). Gentianaceoe. 



Raised from seeds, which should be sown thinly in pans, or in a 

 shady border in fall or early spring ; also division of old plants. 



Saccharum : Sugar-Cane. 



Saccolabium. Orchidacece. 



Propagation as for serides. See also Orchids, page 372. 



Sage (Salma officinalis). Labiates. 



Grown from seeds, sown in spring where the plants are to stand ; 

 also by division or layers, but seeds give better plants. Plantations 

 of the common aromatic sweet-herb sage should be renewed every 

 two or three years. Good plants may be grown from cuttings. See 

 S alma. 



