LXX. COMPOSITE. 205 



obtuse, toothed at tlie apex. — Fl. Cap. iii. p. 48G (iuel. Apuleia, 

 Less.). 



South African thistle-like herbs or underslirubs, with yellow flowers. 

 Leaves very spiny, mostly pinnatiseet. — 43 (or 46) species, dispersed. 



139. BERKHEYA, Ehrh. 



Heads radiate, rarely discoid ; rays neuter ; disk-flowers bi- 

 sexual. Involucral scales free or more or less concrete, in few 

 or many rows, spiuous-pointed. Receptacle honeycombed or 

 deeply pitted. Filaments smooth, Achenes mostly silky 

 or pubescent, rarely glabrous. Pappus-scales 2-seriate, lan- 

 ceolate or subulate, acute or very much acuminate, serrate- 

 fimbriate, or ciliate-serrulate, or entire. — Fl. Cap. iii. p. 50L 



Herbs, often thistle-like, or small shrubs. Leaves rigid, alternate or 

 opposite, more or less ciliate or spinous-toothed. Heads solitary or ter- 

 minal. — 25 species, dispersed. 



140. DIDELTA, L'Her. 



Heads mostly radiate ; rays neuter ; disk-flowers 5-toothed, 

 bisexual. Involucral scales concrete at base, in 2 rows ; the 

 scales of the rows very unequal, sometimes the outer, some- 

 times the inner scales largest. Receptacle honeycombed, the 

 margins of the cells rigidly fimbrilliferous. Filaments smooth. 

 Achenes wingless. Pappus 1-seriate, paleaceous, the scales 

 fimbriate-plumose. — Fl. Gap. iii. p. 510. 



Small rigid shrubs or herbs, sometimes annual. Leaves opposite or 

 alternate, entire or sinuate-toothed, unarmed or spinous. Heads terminal 

 solitary ; flowers yellow. — 5 species, dispersed. 



SuBTEiBE 2. Mtjtisiace^. (Gen. 141-145.) 

 141. OLDENBURGIA, Less. 



Heads many-flowered, radiate, all the flowers bisexual ; 

 corollas of disk-flowers nearly regular, very deeply 5-fid ; of 

 the ray bilabiate, the outer lip long, strap-shaped ; the inner 

 minute, 2-fid. Involucral scales unarmed, linear, acuminate 

 or acute, several-nerved, the inner herbaceous. Receptacle 

 nude. Corolla glabrous ; filaments smooth ; anthers tailed. 

 Style glabrous, its arms very short, obtuse. Achenes turbi- 

 nate, beakless. Pappus of many, shortly plumose, equal 

 bristles. — Fl. Gap. iii. p. 512. 



Very rigid, woody dwarf herbs or shrubs. Leaves leathery, 1-nerved, 

 glabrous above, very liairy beneath. Heads large, purple. — 3 species^ 

 dispersed. 



142. PRINTZIA, Cass. 

 Heads radiate ; rays ligulate (rarely bilabiate), female ; 

 disk-flowers regular, deeply 5-lobed ; lobes revolute. Involu- 



