144 Key to the System of 



704. Leaflets small, revolute at the margin. 



A tall shrub ; leaflets from ovate to elliptical, densely beset 

 with short hairlets ; bracts leafy ; cymes very short, few- 

 flowered ; petals whitish. Z. cytisoides. 



Leaflets usually large, flat or slightly recurved at the 

 margin. 



Tall shrub or small tree, nearly glabrous or somewhat beset 

 with minute hairlets ; leaflets rather thin in texture, from 

 lanceolar to elliptical-ovate ; cymes usually ample and 

 many-flowered; petals whitish. Z. Smith.il. 



BORONXA. 



705. Petals bluish. 



A half-shrub or small shrubby plant ; leaves all simple, 

 small, usually linear- or elliptic-semicylindrical, blunt, 

 often glandular-rough beneath ; petals overlapping at the 

 margin before expansion ; filaments beset with hairlets ; 

 anthers terminated by a rather conspicuous appendage ; 

 seeds rough, without any lustre. 



B. coerulesceus. 



Petals pink or brightly red or whitish ... ... 706 



706. Petals contiguous at the margin before expansion. 



A dwarf, alpine shrub, always glabrous; leaflets generally 

 five, very small, from obcordate to ovate ; rhachis short ; 

 flowers small, solitary ; petals pink or reddish ; filaments 

 glabrous. B. algida. 



Petals overlapping at the margin before expansion ... 707 



707. Leaves or leaflets almost filiform or semicylindrical-.. 708 

 Leaves or leaflets almost or quite flat ... ... 709 



708. Anthers without any appendage. 



Half -shrub or almost herbaceous plant, dwarf and glabrous; 

 leaves very narrow and simple or consisting of three very 

 slender leaflets ; flowers solitary or three together ; petals 

 small, glabrous, pink ; filaments scarcely beset with hair- 

 lets, thickened upwards ; seeds shining, smooth. 



B. filifolia. 



