THE NURSERY LIST. 135 



Betonica. See Stachys. 



Betula (Birch). Cupuliferce. 



Increased by seeds, which must be sown as soon as gath- 

 ered, or else stratified. By grafting or budding upon seed- 

 ling stocks of the common kinds ; the former should be done 

 in spring or late winter, and the latter in summer when the 

 buds are ready. 



Bidens (Bur Marigold). Composite^. 



Propagated by seeds or by divisions of the plant. 

 Biebersteinia. Rutacece. 



Increased by seeds sown in April in a slight hot-bed. In 

 early summer by cuttings, placed under a hand-glass. 



Bigelovia. Composite. 



Propagated by cuttings. 

 Bignonia (Trumpet Flower). Bignoniacece. 



Increased by seeds or layering, or, in early spring, by cut- 

 tings made from good strong shoots with two or three joints. 

 Place cuttings of tender sorts in a well-drained pot of sandy 

 soil, under a bell-glass, in bottom heat. Also by seeds. B. 

 radicans propagates readily from root cuttings. 



Billardiera (Apple Berry). Pittosporece. 



Increased by seeds, and by cuttings placed in a pot of 

 sandy soil, under a bell-glass, in gentle heat. 



Billbergia. Bromeliacece. 



Propagated by suckers which are taken from the base of the 

 plant after flowering, when they have attained a good size. 

 The best method to adopt is as follows : Take the sucker in 

 the hand and gently twist it off the stem ; next, trim the base 

 by the removal of a few of the lower leaves, and then insert 

 each sucker separately in a small pot, in sharp soil. A bot- 

 tom heat of about 80 will greatly facilitate new root growth ; 

 failing this, they will root freely in the temperature of a 

 stove, if placed in a shaded position for two or three weeks, 

 after which they will bear increased light and sunshine dur- 

 ing the latter part of the day. 



Bilberry. See Vaccinium. 

 Bindweed. See Convolvulus. 

 Biophytum. Geraniacece. 



Propagated by seeds sown in spring on a hot-bed. 



