308 Key to the System of 



1396. Leaves from obovate- to elliptic-cuneate. 



Often rather tall ; leaves mostly radical, bluntly short- 

 lobed or merely indented at the upper end, the stem-leaves 

 distant, sessile and narrower ; headlets of flowers rather 

 large ; involucral bracts comparatively narrow, acute ; 

 fruits flat, their membranous margin usually entire ; 

 pappus-bristlets very short, but somewhat dilated down- 

 ward. B. scapiformis. 



Leaves linear. 



Relatively tall; leaves nearly all radical, tufted, much 

 elongated, entire ; headlets of flowers comparatively 

 large ; fruits flat, their membranous margin usually 

 entire ; pappus very conspicuous. B. cardiocarpa. 



1397. Roots producing offshoots ... ... ... ... 1398 



Roots without any offshoots ... ... ... ... 1399 



1398. Pappus conspicuous. 



Quite glabrous ; stems slender, branchless ; leaves nearly 

 all radical, linear, entire or rarely few-lobed ; headlets of 

 flowers rather large ; involucral bracts broadish, blunt ; 

 fruits obovate, hardly compressed, few-streaked, thick- 

 margined ; pappus stellular. B. radicans. 



Pappus very minute. 



Creeping, somewhat beset with short glandule-bearing hair- 

 lets ; leaves from linear- to narrow-lanceolar, entire, the 

 carinular venule prominent ; headlets of flowers rather 

 small ; involucral bracts acute ; fruits almost elliptical, 

 distinctly compressed, granular-rough, thick-margined. 



B. angustifolia. 



1399. Leaves all lobed or indented. 



A rather tall and robust herb, generally beset with jointed 

 hairlets ; lower leaves from obovate to elliptical, mostly 

 pinnatifid and with broadish incised or indented or entire 

 lobes ; upper leaves less divided and somewhat clasping 

 with a dilated base ; headlets of flowers large ; fruits 

 oblique-ellipsoid, hardly compressed, somewhat angular ; 

 pappus conspicuous. B. diversifolia. 



Leaves all or mostly entire ... ... ... ... 1400 



1400. Fruits smooth. 



Glabrous ; leaves nearly all radical, from linear- to elliptic- 

 lanceolar, long-stalked, entire ; headlets of flowers rather 

 small ; fruits compressed, blunt-edged ; pappus minute. 



B. scapigera. 



