226. COMPOSITAE 37I 



-265. Involucral bracts 4 — 5. Heads few-flowered, in panicles. Leaves opposite. 



— Species 10. Tropical and South Africa. Some are used medicinally. 

 {Willugbaeya Neck.) Mikania Willd. 



Involucral bracts 6 or more. — Species 6. Four species indigenous to 

 North and Central Africa, the other two naturalized in Madagascar and 

 the Mascarenes. Some are used as ornamental or medicinal plants. 



Eupatorium L. 



-266. (262.) Style-branches of the hermaphrodite flowers bearing in the lower 



part marginal, finally reflexed rows of stigmatic papillae, in the upper 



part on the outer, more rarely also the inner surface, short subequal 



hairs. [Tribe ASTEREAE.] 267 



Style-branches of the hermaphrodite flowers stigmatose at the margins 

 or on the inner surface, bearing in the upper part or at the top only a 

 crown of rather long hairs sometimes joined above or below or in both 



directions by shorter ones 301 



■267. Female or neuter marginal flowers with a bell-, tube-, thread-, or very 



shortly strap-shaped corolla not overtopping the involucre. . . . 268 



Female or neuter marginal flowers with a distinctly strap-shaped corolla 



overtopping the involucre, or wanting 276 



268. Pappus of scales or few short bristles, or wanting. Corolla of the marginal 

 flowers bell-, tube-, or thread-shaped. Herbs. [Subtribe grangeinae.] 



269 

 Pappus of long bristles. Corolla of the marginal flowers thread- or 



strap-shaped. [Subtribe conyzinae.] 272 



^269. Pappus wanting, rarely some minute bristles on the central fruits. Fruits 

 compressed. — Species 6. Tropical and South Africa. Some species 



yield condiments and medicaments Dichrocephala DC. 



Pappus present 270 



270. Pappus formed of bristles. Fruits subterete. — Species i. Central 



Africa Microtriehia DC. 



Pappus cup-shaped or consisting of scales 271 



271. Receptacle with scales between the flowers. — Species i. Central Africa 



and Egypt Ceruana Forsk. 



Receptacle without scales between the flowers. — Species 3. Tropics to 

 Egypt. Used medicinally Grangea Adans. 



272. Fruits turgid. Involucral bracts in many rows, membranous. Heads 



in panicles. Shrubs. — Species 13. Tropical and South Africa. Some 



species are used as vegetables or salad Microglossa DC. 



Fruits compressed 273 



273. Female flowers in one row. Pappus-bristles deciduous. Shrubs or 



undershrubs. Leaves linear. Heads solitary at the ends of the branches. 



— Species 6. South and North Africa. {Lepiothamnus DC.) 



Nolletia Cass. 

 Pemale flowers in two or mere rows 274 



