LXX. COMPOSITyE. 1C9 



leaves, decurrent as narrow wings along the stem. Heads small, corymbose 

 or tufted. — 2 species, from the Northern frontier. 



3. VERNONIA, Sclireb. 



Heads few- or maiiy-flowercd, lioinogamous. Involucre 

 imbricate, shorter than the flower ; scales not pungent. Re- 

 ceptacle nude or honeycombed. Corolla deeply 5-fid, with 

 narrow lobes. Filaments smooth ; anthers sagittate. Achenes 

 glabrous or silky, striate or ribbed. Pappus 2-seriate, the 

 inner of many, long, serrate bristles, outer of very narrow, 

 short scales ; rarely both series subequal. — Fl. Cap. iii. p. 48 ; 

 Thes. Cap. t. 15G, 157. 



A vast tropical and subtropical genus, various in habit. Leaves often 

 gland-dotted. Heads corymbose or solitary ; flowers rosy-purple or white. 

 — 15 South African species, all Eastern or beyond the Eastern fi'onticr. 



4. HOLOPHYLLUM, DC. 



Heads few-flowered, homogamous. Involucre ovate-oblong, 

 closely imbricate, the broad, rigid scales spinous-mucronate. 

 Receptacle narrow, fimbrilliferous. Corolla glabrous, tubular, 

 deeply 5-cleft ; lobes linear. Eilaments smooth ; anthers 

 linear, sagittate. Achenes thick, subtrigonous, densely hairy, 

 slightly narrowed under the pappus. Pappus in many rows, 

 persistent, scabrous, the outer bristle-shaped, the inner subu- 

 late-acuminate. — Fl. Cap. iii. p. 53. 



Eigid slnnibs, with pungent, linear or subulate loaves, and sessile, axil- 

 lary or terminal heads. — 2 species. Western and North-Eastern districts in 

 dry places. 



5. PLATYCABPHA, Less. 



Heads densely crowded, sessile, many-flowered, homoga- 

 mous. Involucral scales in many rows, lanceolate, scarious, 

 pungent-mucronate, the inner narrow, resembling paleae. Co- 

 rolla with a long, slender, hispid tube, and 5-parted limb ; the 

 lobes linear, with recurved, gland-tipped points. Pilaments 

 smooth ; anthers linear, obtuse, sagittate. Achenes glabrous, 

 oblong, bluntly 5-angled. Pappus persistent, of 7-9 wdiite, 

 linear-acuminate, entire, spreading scales. — Fl. Cap. iii. p. 51. 



P. glomerata, the only species, is a stemless pei'ennial, with many radical, 

 petioled, pinnate-parted leaves lying like a star on tlie ground. Heads 

 crowded over the crown of the root ; corolla pm-ple. — Found in Uitenhage, 

 by the Zwartkops river, in salt ground. 



G. CORYMBIUM, Linn. 



Heads 1-flowcred. Involucre cylindrical, of 2 opposite, 

 channelled scales, one clasping the other, with 2-3 very small, 



