174 LXX. COMPOSIT®. 
22. FRESENIA, DC. 
Heads several-flowered, discoid. Involucral scales imbricate, 
linear, submembranous at margin, with 1-3 dorsal glands. 
Receptacle areolate, narrow. Corolla tubular, glabrous, 5- 
toothed, not wider at the throat. Anthers without tails. 
Achenes compressed, beakless, silky. Pappus double, the 
outer of short, narrow scales, inner of long, rough bristles — 
Fl. Cap. iii. p. 92. 
Glabrous halfshrubs, with linear, opposite or alternate, entire leaves, and 
l-headed peduncles. Flowers pale yellow.—2 species, both Western. 
23. CHRYSOCOMA, Cass. 
Heads many-flowered, discoid. Receptacle somewhat honey- 
combed. . Involucre campanulate, shorter than the flower, 
imbricate, of oblong-lanceolate scales. Achenes flattened, 
beakless, hispidulous. Pappus in 1 row, of slender, rough 
bristles —7. Cap. i. p. 93. 
South African small shrubs or rarely herbs, with linear, rarely pinnatifid 
leaves. Heads solitary or rarely corymbose, bright yellow.—9 species, 
dispersed. 
24. PTERONTIA, Linn. 
Heads discoid, homogamous, many-flowered, rarely 3+1- 
flowered. Receptacle honeycombed ; cells shallow or fringed. 
Involucre imbricated, in many rows. Achenes compressed or 
top-shaped, glabrous or villous, rarely shortly beaked. Pap- 
us in many rows, of thickish, straight and rigid, closely- 
barbed bristles, often concrete at base.—F7. Cap. ii. p. 95. 
A large Cape genus of small, dry or glutinous shrubs. Leaves opposite 
or rarely alternate, mostly entire, often ciliate. Heads solitary or corym- 
bose ; flowers yellow, rarely purple.—51 species, dispersed, the majority 
Western and North-Western. 
SUBTRIBE 2, BACCHARIDER. (Gen. 25-28.) 
25. LEPTOTHAMNUS, DC. 
Heads many-flowered, heterogamous ; marginal flowers fili- 
form, truncate or 2-dentate, female, in 1 row; disk-flowers 
tubular, perfect, 5-toothed. Receptacle flat, nude, somewhat 
honeycombed. Involucral scales imbricate, acuminate, in few 
rows. Pappus bristle-shaped, deciduous, of the ray 1-seriate, 
of the disk more copious. Achenes compressed, silky.—F. 
Cap. ii. p. 111. 
Slender undershrubs, with scattered, linear-subulate, rigidly-ciliate leaves, 
and terminal, 1-headed peduncles. Flowers yellow, tawny red above.— 
2 species, both Eastern. 
