408 THE NURSERY-MANUAL 



Ranunculus (Buttercup. Crowfoot). Ranunculacece. 



Propagated by seeds, and by division of the plants in spring. 

 The thick-rooted species are propagated by the natural division 

 of the tuberous parts. After flowering and the herbage dies down, 

 the tuberous roots may be taken up, dried, and kept cool and dry 

 until spring; or the plants may be left in the ground where the 

 winters are not too severe. 



Raphia. Palmacece. 



Propagated by seeds. See Palms, page 377. 



Raspberry (Rubus strigosus, R. occidentalis, etc.). Rosacece. 



New varieties are originated from seeds, which are washed from 

 the pulp and sown immediately, or stratified. Bearing plants should 

 be had the second growing season, or perhaps the third season far 

 North. 



The black-cap varieties are grown mostly from root-tips, as 

 described on page 71. If the ground is loose and mellow, the tips 

 will commonly take root themselves, but on hard ground the tip 

 may have to be held in place by a stone or clod. Some strong-grow- 

 ing varieties, as the Gregg, especially in windy localities, have to 

 be held down. Commercial growers commonly bury the tips in 

 early fall. Blackcaps may also be propagated by layers and by 

 root-cuttings. These cuttings are best handled in warm coldframes 

 or mild hotbeds, being planted very early in spring. By the time 

 the weather is settled, they will be large enough to plant in nursery 

 rows. 



The red varieties increase rapidly by means of suckers which 

 spring from the roots. Better plants are obtained by means of 

 root-cuttings, however, as described under blackberry (see also 

 Fig. 103). Commercial men propagate the reds by the sucker 

 method. 



Rehmannia. Scrophulariacece. 



Propagated by cuttings of growing wood ; also by seeds, giving 

 bloom the second season. 



Reinwardtia (Linum, in part, of gardeners). Linaceoe. 



Propagated by seeds, cuttings of strong shoots in heat and 

 divisions of old plants. 



Reseda : Mignonette, 



