250 Key to the System of 



1150. Leaves hooked-pointed. 



Shrub, finally tall ; branchlets slender ; leaves rather long, 

 very narrow, linear-cylindrical, slightly channelled, 

 hardly spreading ; flowers small, generally solitary, their 

 stalk about as long as the stalklet ; petals white ; stamens 

 eight to fifteen ; fruit three-celled. B. Behrii. 



Leaves pointless or straight-pointed ... ... ... 1151 



1151. Leaves elongated ... ... ... ... ... 1152 



Leaves abbreviated ... ... ... ... ... 1154 



1152. Leaves very narrow. 



A rather tall shrub ; branchlets slender ; leaves narrowly 

 semicylindric-linear, straight-pointed ; flowers always 

 solitary, small, on short stalklets ; petals white ; fruit 

 two- celled. B. liiiifolia. 



Leaves broadish ... ... ... ... ... 1153 



1153. Leaves entire. 



A shrub, finally tall or even somewhat arborescent, but 

 flowering already in a dwarf state ; leaves flat or slightly 

 recurved at the margin, from linear- to elliptic-lanceolar ; 

 flowers in pedunculate umbels, from two to nine in each ; 

 petals white ; stamens eight to fifteen ; fruit three-celled. 



B. virgata. 



Leaves crenulated. 



Finally rather tall ; leaves flat, spreading, from obovate 

 and elliptical to almost orbicular ; flowers on very con- 

 spicuous stalks and stalklets, three or two together, 

 seldom solitary ; petals white ; stamens ten to fifteen ; 

 fruit three-celled. B. ereiiatifolia. 



1154. Leaves almost flat. 



A slender, glabrous shrub ; leaves quite small, from oval- to 

 lanceolar-elliptical ; flowers on very short stalklets or 

 sessile, solitary or two or three together ; flowers small ; 

 petals white ; stamens usually fifteen ; fruit three-celled. 



B. camphorata. 



Leaves trigonous or very turgid ... ... ... 1155 



