226. COMPOSITAE 569 



246. Outer involucral bracts longer than the inner. Corolla slightly irregular. 



Leaves linear, sessile, glabrous. — Species i. Southern West Africa 



(Angola) Omphalopappus O. Hoffm. 



Outer involucral bracts shorter than the inner. Corolla regular. Leaves 

 lanceolate, short-stalked, short-haired. — Species i. Southern West 

 Africa (Angola) Gossweilera S. Moore 



247. Heads in dense glomerules or heads, few-flowered. Involucral bracts in 



several rows of two bracts each. Corolla 5-cleft. Fruits lo-ribbed. 

 Pappus of I — 2 rows of bristles or narrow scales. Hcrl)s. Spt-ries 5. 



Tropics. Used medicinally Elephantopus L. 



Heads not in dense glomerules or heads. [Subtribe vernoninae.] 248 



248. Pappus wanting 249 



Pappus present. 251 



249. Heads i — 4-flowered, in corymbs. Involucre oblong. Fruits with an 



indistinctly cup-shaped border at the top. Shrubs. (Sec 136.) 



Apodocephala Bak. 

 Heads many-flowered. Involucre campanulate or hemispherical. Herbs. 



250 



250. Fruits truncate at the top, 4 — 5-ribbed. — Species 5. Tropical and 



South Africa and Egypt Ethulia L. 



Fruits rounded at the top. — Species 10. Central Africa. 



Gutenbergia Schultz 



251. Pappus ear- or cup-shaped, entire or nearly so. Herbs 252 



Pappus formed of scales or bristles 253 



252. Pappus auricle-like. Heads in cymes. Leaves linear. — Species r. 



East Africa Hoehnelia Schweinf. 



Pappus cup-shaped. Heads solitary or in facsicles. — Species i. Tropics. 



Sparganophorus Vaill. 



253. Pappus of one row of scales and sometimes some bristles within them. 254 

 Pappus only of bristles or of several rows of bristles with some small 



scales outside them 257 



254. Pappus-scales 5, long and narrow. Fruits 5-ribbed. Corolla white. 



Involucral bracts in two rows. Heads in panicles. Shrubs. — Species i. 



West Afiica (Congo) Msuata O. Hoffm. 



Pappus-scales short. Herbs 255 



255. Pappus-scales 5. Fruits 4-ribbed, glabrous. Corolla violet. Receptacle 



pitted; pits with toothed borders. Heads many-flowered, in glomerules. 



— Species 3. Central Africa Ageratina O. Hoffm. 



Pappus-scales more than 5. Receptacle not pitted 256 



256. Heads one-flowered, in corymbs. Involucral bracts in two rows. Fruits 



cyhndrical, hair}'. Pappus-scales united below. Leaves linear, with 

 parallel veins. — Species 10. South Africa. . . Corymbium L. 

 Heads several-flowered. Involucral bracts in several rows. Fruits 

 3 — 5-angled, glandular. Pappus-scales free or nearly so. — Species 

 4. Central Africa Herderia Cass. 



