148. COMPOSITAE. 2U. 



90. Stem woody, at least at base, or, if herbaceous, much branched 



from base. Pappus in 1 row, rarely in 2. Marginal 



flowers in 1 — 2 rows. 8 FELICIA. 



Stem herbaceous, not much branched from base. 91. 



91. Involucral bracts in 2 rows. Marginal flowers usually in 



several rows. (Weeds.) 9 ERIGERON. 



Involucral bracts in 3 or more rows. Marginal flowers in 1 — 2 



rows. 7 ASTER. 



92. Pappus of thin, hairlike, simple or toothed, but not feathery 



bristles, rarely outer fruits without a pappus. Receptacle 



without scales between the flowers. 93. 



Pappus of strong, awnlike or feathery bristles or of scales 



sometimes united, or wanting. 97. 



93. Involucral bracts in 1 row, united below. 68 EURYOPS. 

 Involucral bracts free, nearly or quite to the base. 9+ 



94. Involucral bracts with a leaf-like crest along the middle nerve. 



63 LOPHOLAENA. 

 Involucral bracts not crested and winged. 95. 



95. Style branches with an awl-shaped hairy appendage without a 



distinct crown of longer hairs. 64 GYNURA. 



Style branches truncate with a terminal tuft of hairs, or with 



a hairy appendage overtopping a crown of longer hairs. 96. 



96. Fruits, at least the outer, compressed dorsally. 



65 CINERARIA. 

 Fruits not compressed, 5—10 ribbed. 66 SENECIO. 



97. Involucral bracts (at least the inner ones) scarious at tips and 



edges. Pappus of minute scales or wanting. Style 

 branches truncate with a terminal crown of hairs. 98. 

 Involucral bracts rarely scarious at the edges, and if so, then 

 pappus of bristles or style branches ending in a hairy ap- 

 pendage. 110. 



98. Anthers arrow-shaped. Halves pointed at base. 



71 DIMORPHOTHECA. 



Anthers not arrow-shaped. Halves blunted or rounded at 



base. 99. 



99. Receptacle with scales between the flowers. 100. 

 Receptacle glabrous or hairy without scales. 101. 



100. Leaves opposite or whorled. Heads solitary at ends of 



branches. 55 EUMORPHIA. 



Leaves alternate. Heads usually in corymbs without ray 



flowers. 54 ATHANASIA. 



101. Marginal flowers with a strap-shaped corolla 102. 

 Marginal flowers not with a strap-shaped corolla. IO4. 



102. Involucral bracts in many rows imbricate, the outer much 



shorter. 56 CHRYSANTHEMUM. 



Involucral bracts in few rows, about equal. 103. 



