554 ^26. COMPÜSITAE 



Style-branches of the hermaphrodite flowers usually truncate ; marginal 

 rows of stigmatic papillae not confluent at the tip 97 



87. Pappus absent 88 



Pappus present, at least upon the inner fruits 89 



88. Involucral bracts united at the base. Scales on the receptacle broad. 



(See 81.) Anvillea DC. 



Involucral bracts free. Scales of the receptacle very narrow. — Species 2. 

 Central Africa Astephania Oliv. 



89. Pappus cup-shaped, minutely toothed. — Species 12. Sphaeophyllum Boj. 

 Pappus of scales or bristles 90 



90. Inner fruits with a pappus of feathery bristles, outer without a pappus. 



Receptacle bearing scales at the margin only. — Species 3. North Africa. 



Rhanterium Desf. 

 Inner and outer fruits with d pappus of scales or of scales and bristles. 91 



91. Pappus of the central fruits consisting of outer scales and inner bristles. 



Receptacle bearing scales at the margin only. Fruits lo-ribbed. Shrubs. 



— Species i. South-west Africa (Kalahari). Philyrophyllum O. Hoffm. 

 Pappus of all fruits consisting of scales, rarely {Anisopappus) of scales 



intermingled with some bristles 92 



92. Involucral bracts with a large scarious appendage. Heads solitary. — 



Species i. German South-west Africa Ondetia Benth. 



Involucral bracts without a scarious appendage. ...;... 93 



93. Involucral bracts leathery. Corolla of the hermaphrodite flowers deeply 



5-cleft. Heads in c^^mes. — Species 20. South andCentral Africa. 



Geigeria Griesselich 



Involucral bracts herbaceous or membranous. Corolla of the hermaphrodite 



flowers 5-toothed 94 



94. Corolla-tube of the hermaphrodite flowers thickened, broader than the 



limb, corky. Marginal fruits winged. Flower-heads solitary, with an 

 outer involucre of mucronate leaves. — Species i. North Africa. 



Pallenis Cass. 



Corolla-tube of the hermaphrodite flowers not thickened, narrower than the 



limb 95 



95. Outer and inner fruits ahke, many-ribbed. Pappus-scales unequal. 



Heads in leafy corymbs. Herbs. — Species 6. Central Africa. 



Anisopappus Hook. & Am. 

 Outer and inner fruits dissimilar. Heads solitarv, terminal. ... 96 



96. Inner fruits conspicuously compressed. Pappus of a few very unequal 



scales. Herbs. — Species 5. South Africa. ... Callilepis DC. 

 Inner fruits scarcely compressed. Pappus of many subequal scales. — 



— Species 13. North and Central Africa. 0. pygmaeum O. Hotfm. 

 is one of the hygroscopic plants called "rose of Jericho." [Asterisctis 

 Moench) Odontospermum Neck. 



97. (86.) Pappus wanting. Shrubs 98 



Pappus present. 99 



