226. COMPOSITAE 555 



98. Scales between the flowers bristle-like. Leaves small, pungent, neariy 



glabrous. — Species i. South Africa Arrowsmlthia DC. 



Scales between the flowers not bristle-like. Leaves glandular-hairy. — 

 Species 2. South Africa. Used medicinally. Osmitopsis Cass. 



99. Pappus of the inner fruits formed of scales sometimes united into a small 



crown. 100 



Pappus of the inner fruits formed of bristles or of scales and bristles loi 



100. Involucral bracts in few rows. Style-branches truncate. Undershrubs. — 



Species 8. South Africa. Some are used medicinally. . . Osmites L 

 Involucral bracts in many rows, — Species 20. South Africa. 



Relhania L'Hcr. 

 loi. Pappus of the inner fruits consisting of many scales and two awns. Shrubs. 



— Species 2. South Africa Rosenia Thunb. 



Pappus of the inner fruits consisting of feathery bristles sometimes 



intermingled with scales. Herbs or undershrubs. — Species 7. South, 

 North, and East Africa. Some are used medicinally. Leyssera L. 



102. (85.) Heads collected in glomerules, heads, or spikes. Female marginal 



flowers usually numerous. [Tribe INULEAE, subtribe filagininae.] 



103 

 Heads solitary or in cymes, corymbs, or panicles. Female marginal 

 flowers-few. Involucral bracts scarious or ending in a coloured append- 

 age. Pappus of the central fruits formed of bristles no 



103. Marginal or all fruits without a pappus. Herbs 104 



Marginal fruits, at least the inner ones, or all fruits provided with a pappus. 



106 



104. Scales on the receptacle tightly enclosing the marginal fruits. Corolla 



of the female flowers inserted laterally upon the ovary. Herbs. — 



Species 2. North Africa Micropus L. 



Scales on the receptacle not enclosing the fruits 105 



105. Central fruits without a pappus. Heads in compound heads. Herbs. — 



Species 7. North Africa. (Including Evacidium Pomel) 



Evax Gaertn. 



Central fruits with a pappus of feathery bristles. Heads in glomerules 



or in spikes. Leaves linear. — Species 10. South and North Africa. 



(Including Trichogyne Less.) Ifloga Cass. 



106. Pappus of the central fruits consisting of scales, that of the marginal ones 



of scales and bristles. Heads in glomerules. Glabrous lierbs. — 



Species i. North Africa Gymnarrhena Desf. 



Pappus of all fruits consisting of bristles 107 



107. Stem herbaceous, woolly or cottony 108 



Stem woody, at least at the base 109 



108. Stem winged. Pappus of all fruits formed of one or two rows of bristles. 



— Species i. Madagascar and Mauritius. {Monenteles Labi II.) 



Pterocaulon Ell. 



