556 226. COMPOSITAE 



Stem not winged. — Species 13. North Africa, Abyssinia, and Cape 

 Verde Islands. (Including Logfia Boiss. and Xerotium Bluff & Fing.) 



Filago L 



109. Leaves hairy. Heads in glomerules. Female flowers in several rows. 



Shrubs. — Species i. Island of Mauritius. , . Cylindrocline Cass. 



Leaves glabrous. Heads in compound heads or in spikes. Female 



flowers few. — Species 7. Central Africa. . Blepharispermum Wight 



no. (102.) Heads containing 3 — 6 female and i — 2 fertile hermaphrodite 



flowers and collected in dense cymes arranged in panicles. Undershrubs. 



— Species 9. Tropical and South-east Africa. . . Achyrocline Less. 



Heads containing fewer female than hermaphrodite flowers. . . .111 



111. Hermaphrodite flowers sterile, the inner not subtended by scales. Shrubs. 



112 

 Hermaphrodite flowers fertile 113 



112. Female flowers in the axils of the outer involucral bracts and separated 



from the hermaphrodite flowers by two rows of inner involucral bracts. — 



Species i. South Africa Petalactella N. E. Brown 



Female flowers in the axils of the inner involucral bracts. Pappus-bristles 

 thickened or penicillate at the apex. — Species i. South Africa. 



PetaJaete Don 



113. Scales between the flowers long, deciduous. Shrubs. — Species 3. Tropical 



and South-east Africa. (Including Rhynea DC.) Cassinia R. Br. 

 Scales between the flowers short, persistent. (See 84.) Helichrysum Gaertn. 



114. (78.) Flowers dioecious. Trees or shrubs. [Tribe INULEAE, subtribe 



TARCHONANTHINAE.] II5 



Flowers hermaphrodite, polygamous, or monoecious, rarely {Anaphalis) 

 subdioecious, but then herbs 117 



115. Involucral bracts of the male heads in one row, united below, of the 



female in two rows. Pappus none. — Species 3. South and Central 



Africa.. They yield timber and medicaments. Tarchonanthus L. 



Involucral bracts in several rows. Pappus of bristles 116 



116. Pappus-bristles in one row. Heads in fascicles. — Species 3. Mada- 



gascar Synchodendron Boj. 



Pappus-bristles in two rows. Heads in racemes or panicles. — Species lo. 

 Southern and Tropical Africa. Some species yield timber 



Brachylaena R. Br. 



117. Inner flowers hermaphrodite but sterile (male) ii8 



Inner flowers hermaphrodite and fertile 134 



118. Corolla of the outer flowers strap-shaped 119 



Corolla of the outer flowers thread-shaped 125 



119. Pappus consisting of bristles. Shrubs. — Species 3. South Africa. 



Macowania Ohv. 

 Pappus wanting 120 



120. Receptacle beset with many long bristles. Outer fruits compressed. 



Shrubs. Leaves pungent. (See 98.) .... Arrowsmithia DC. 



