LXX. COMPOSIT®. 205 
obtuse, toothed at the apex.— Fl. Cap. i. p. 486 (incl. Apuleia, 
Less.). 
South African thistle-like herbs or undershrubs, with yellow flowers. 
Leaves very spiny, mostly pinnatisect.—43 (or 46) species, dispersed. 
1389. 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, spinous-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.—/1. Cap. iii. p. 501. 
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’ Hér. 
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 honeyecombed, the 
margins of the cells rigidly fimbrilliferous. Filaments smooth. 
Achenes wingless. Pappus 1-seriate, paleaceous, the scales 
fimbriate-plumose.— FV. Cap. i. p. 510. 
Small rigid shrubs or herbs, sometimes annual. Leaves opposite or 
alternate, entire or simuate-toothed, unarmed or spinous. Heads terminal, 
solitary ; flowers yellow.—5 species, dispersed. 
Susrripe 2, Murisiacem. (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. Inyolucral 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.— FV. Cap. i. p. 512. 
Very rigid, woody dwarf herbs or shrubs. Leaves leathery, 1-nerved, 
glabrous above, very hairy 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- 
