TiXX. COMPOS ITiE. 185 



G2. TANACETUM, Liun. 



Heads discoid, either lioinojTjamous or hcterogamous, liavini;- 

 a few marjriual, female, 2-3-4-tootlicd flowers. Involucre im- 

 bricate. Eeceptacle convex, nude. Corolla terete, 4-toothed. 

 Achenes sessile, angular, glabrous, \\ath a large epigynous disk. 

 Pappus either or minute and coroniform, entire or somewhat 

 toothed, often oblique. — Fl. Gap. iii. p. 1G7. 



A large genus in the Northern hemisphere, various in habit. Leaves 

 alternate. Heads corymbose or solitary. — 3 Cape species, all Eastern or 

 from Natal. 



G3. SCHISTOSTEPHIUM, Less. 



Heads discoid, heterogamous ; marginal flowers female, with 

 very short, bilabiate corollas ; disk-flowers bisexual, but com- 

 monly abortive, 4-toothed. Involucre imbricate. Heceptacle 

 convex, nude. Achenes sessile, of the disk glabrous, ovuli- 

 ferous, with 2-fid styles, of the margin silky, obovatc. Pap- 

 pus O.—Fl. Cap. iii. ij. 168. 



Shrubs or halfshrubs, silky or tomentose. Leaves alternate, flabelliform 

 and many-nerved, or pinnatisect. Heads corymbose; flowers yellow, — 3 

 species, all Eastern. 



64. ARTEMISIA, Linn. 



Heads discoid, homo- or heterogamous ; marginal flowers 

 in 1 row, often female, 3-toothed, with a long, exserted, 2-fid 

 style ; disk-flowers 5-tootlied, bisexual (sometimes abortive) 

 or male. Involucre imbricate ; scales membrane-edged. Ee- 

 ceptable nude or hairy-fimbrilliferous. Achenes obovate, with 

 a small, epigynous disk. Pappus 0. — Fl. Cap. iii. p. 169. 



A very large genus in the Northern hemisphere.— ^. Afra, the only 

 Cape species, is a leafy undershrub ; the leaves canous beneath, 2-pinnate- 

 parted, with linear, acute, entire or toothed pinuules ; heads racemoso- 

 paniculate, small. G-rows from Swellendam eastwards to Natal. " Worm- 

 wood," " Southernwood," and " Taragon," are familiar examples of culti- 

 vated species. 



65. HIPPIA, Linn. 



Heads discoid, heterogamous ; marginal flowers in 1 row, 

 female, filiform ; disk-ilowers male, 5-toothed. Involucral 

 scales subbiseriate, elliptical or ovate, membrane-edged. Re- 

 ceptacle nude, convex. Marginal achenes roundish, flattened, 

 with marginal ribs or wings ; of disk, abortive. Pappus 0. — 

 Fl. Cap. iii. p. 170. 



Herbs or imdershrubs, with the odour of Chamomile. Leaves alternate, 

 mostly ])innatisect, rarely entire. Heads small, yellow, corymbose. — 4 

 species, dispersed. 



