306 Key to the System of 



J ; : : : 



1385. Perennial 1386 



Annual ... ... ... ... 1402 



1386. Fruits black ... 1387 



Fruits brownish ... ... ... ... ... 1388 



1387. Leaves indented towards the summit, beset with 



minute glandule-bearing hairlets. 



Rather dwarf desert-plant ; leaves mostly elliptic-cuneate, 

 short-lobed towards the upper end ; fruit obovate, some- 

 what compressed, granular-rough, without any marginal 

 membrane ; pappus stellular. B. melanocarpa. 



Leaves dissected into narrow segments, glabrous. 



Much branched, generally glabrous ; leaves pinnatisected, 

 the segments often again divided ; headlets of flowers 

 small, on very slender stalks ; fruits narrow-ellipsoid, 

 slightly compressed, rough, without any membranous 

 margin ; pappus stellular. . B. multifida. 



1388. Pappus absent. 



Nearly glabrous, producing offshoots from the root, branch- 

 less or hardly branched ; leaves linear or the lower 

 lanceolar-linear, never numerous on the stem ; headlets 

 of flowers small, on long stalks ; fruits obovate, com- 

 pressed, with a thick margin, but without any membrane. 



B. graminea. 



Pappus present ... ... ... ... ... 1389 



1389. Stems reduced to leafless flowerstalks ... ... 1390 

 Stems bearing leaves 1391 



1390. Leaves doubly pinnatisected. 



Alpine, glabrous ; leaves all radical, slender-stalked, the 

 segments very narrow, entire or oftener subdivided ; 

 fruits much compressed, only the outer broad-mem- 

 branously margined. B. nivalis. 



Leaves only denticulated. 



Dwarf, nearly glabrous ; leaves all radical, crowded, from 

 obovate- to elliptical - cuneate, generally denticulated 

 towards the summit ; headlets of flowers short- and 

 strong-stalked, rather large ; involucral bracts purplish- 

 dark at the edge ; fruits flat, without any membranous 

 margin ; pappus stellular. " Native Daisy." 



B. decipiens. 



