170 LXX. COMPOSITE. 



outer bracts at base. Corolla salver-sLaped, deeply 5-cleft. 

 Antliers included, simple at base. Acbenes tapering at base, 

 silky. Pappus short, cro^vn-like, irregularly cleft or torn. — 

 Fl. Cap. iii. p. 55. 



Nearly stemless plants, with a thick, softlj-silky rootstock. Leaves ra- 

 dical, linear, parallel-nerved, rigid. Flower-stems nearly nude, with a few 

 clasping, scale-like leaves, corymbose at summit. Corymbs close or loose ; 

 flowers pink or white, rarely yellow. — 7 species, dispersed. 



Tribe 2. Eupatoriace^. (Gen. 7-10.) 



7. ANISOCH^TA, DC. 



Heads many-flowered, homogamous. Involucre ovate, im- 

 bricate, its scales lanceolate, appressed, shorter than disk. 

 E/eceptacle nude. Corolla tubular, deeply 5-cleft. Anthers 

 sagittate. Style shortly exserted; branches cylindrical, ob- 

 tuse, nearly smooth. Achenes oblong, striate, scarcely downy. 

 Pappus of 3-5, narrow-subulate, unequal scales. — Fl. Cap. iii. 

 p. 57. 



A. miJcanioides, DC, the only species, is a half-climbing or scrambling 

 plant, found near Natal. Leaves alternate, petioled, ovate, 3-5-uerved 

 at base, coarsely toothed, at length nearly glabrous. Panicle terminal, with 

 widely-spreading branches, many-headed. 



8. AGERATUM, Linn. 



Heads many-flowered, subglobose. Involucre loosely imbri- 

 cate ; scales acuminate. Eeceptacle nude. Corolla tubular, 

 5-fid. Achenes with a basal callus, 5-angled, narrowed at 

 base. Pappus of 5-10, lacerate or pectinate scales. — Fl. Cap. 

 iii. ^. 57. 



Herbs, chiefly American. — A. conyzoides, Linn., a common tropical plant, 

 often cultivated, occurs about Natal. Leaves ovate, rhomboid or cordate, 

 on longish petioles ; heads corymbose ; flowers lavender blue or white. 



9. ADENOSTEMMA, Forst. 



Heads many-flowered. Receptacle flat, nude, honeycombed. 

 Involucral scales short, in a single or double row, connate at 

 base, oblong, at length reflexed. Corolla funnel-shaped, 5- 

 toothed, villous externally. Style- arms much exserted, di- 

 lated. Achenes oblong, bluntly angular, crowned with 3-5 

 short, rigid, spreading, gland- tipped bristles. — Fl. Cap. in. p. 58. 



Herbs of hot countries. Leaves opposite, petioled, toothed, 3-nerved at 

 base. Heads panicled, pedicelled ; flowers white. — 2 Cape species, from 

 Caifraria and Natal. 



10. MIKANIA, AVilld. 

 Heads 4-flowered. lieceptacle nude. Involucre li-leaved, 



