LXX. COMPOSITiE. l75 



2G. CONYZA, Less. 



Heads many-flowered, lieterogamous ; marginal flowers fe- 

 male, in many rows, with very slender, filiform, truncate or 

 2-3-tootlied corollas ; central flowers few, male, 5-tootlied. 

 E-eceptacle flat or convex, nude or fimbrilliferous. Involu- 

 cral scales in many rows. Anthers without tails. Achenes 

 flat, mostly glabrous. Pappus 1-seriate, of slender, scarcely 

 rough bristles. — Fl. Cap. iii. p. 111. 



Herbs or halfslirubs. Leaves various, often toothed or incised. Heads 

 peduncied corymbose or panicled. Flowers yellow. Pappus reddish. — 

 9 Cape species, dispersed. 



27. DICHROCEPHALA, DC. 



Heads many-flowered, heterogamous, discoid ; marginal 

 flowers female, in many rows, slender, filiform, 3-4-tootlied ; 

 central few, male, bell-shaped, 4-toothed. Eeceptacle nude, 

 conical. Involucre expanded, nearly 1-seriate ; scales ovate, 

 subequal. Style included. Achenes compressed, bealdess, 

 the marginal without pappus, central each with 1-2 bristles. — 

 Fl. Cap. iii. p. 114. 



Annual weeds of warm countries, with alternate, tootlied or lyrate leaves, 

 and globose, small, racemose or panicled heads. — i>. latifolia, DC, occurs 

 in the Eastern district and at Natal. 



28. SPH^RANTHUS, Yaill. 



Heads crowded into a globose glomerule (or compound 

 head), surrounded by a common involucre; each partial head 

 sessile in the axil of a bract, on a convex, common receptacle. 

 Partial heads few-flowered, monoecious, all the flowers tubular ; 

 female filiform, 3-toothed ; male swollen, 5-toothed. Partial 

 receptacle nude. Partial involucre of several, close-pressed, 

 imbricate scales. Anthers tailless. Pappus 0. — Fl. Cap. iii. 

 p. 115. 



Herbs of hot countries. Leaves decurrent, serrate or entire. — >S', pedim- 

 cularis, DC, occurs in Caffraria and at Natal. Flowers purplish. 



SuBTEiBE 3. Tarchoxanthe.e. (Gcn. 29-30.) 



29. BRACHYL^NA, E. Br. 



Heads many-flowered, dioecious. E-eceptacle nude. Invo- 

 lucral scales imbricated, dry, shorter than the flowers. Co- 

 rolla tubular, unequally 5-toothed. — Male : Anthers tailed at 

 base, connate, exserted. Style filiform, simple. Ovary hispid, 

 abortive, with few pappus-bristles. — Female : Anthers abor- 

 tive, separate. Style 2-fid, the arms short and broad. Achenes 



