MACLOSKIE : COMPOSITE. 765 



variously convex, naked or with chaff between the flowers. Seeds with 

 large, anatropous, erect embryo, and no endosperm. 



Species nearly 12,000, cosmopolitan. 



(Always secure open flower-heads and also ripe fruits. In the analyses, 

 references to the style-branches in most cases concern only fertile flowers ; 

 the style of sterile flowers being imperfectly developed.) 



PATAGONIAN COMPOSITE. 



I. ANALYSIS OF TRIBES. 



A. Flowers tubular, with or without a ray of ligulate flowers. Juice watery. 

 B. Heads homogamous, all the flowers tubular. 



c. Anthers basally sagittate, dorsifixed. Flowers never yellow. (Genus i.) 



I. VEKNONIE/E, p. 766. 



C2. Anthers basally subentire, apically appendaged or not. Styles long, obtuse. Invo- 

 lucral-scales oo -seriate, imbricate, only slightly unequal. Receptacle mostly naked. 

 Pappus mostly setose. Corollas 4-5 -cleft, never true yellow. Leaves mostly op- 

 posite. (Genera 2-4.) II. EUPATORIE^E, p. 766. 

 CT,. Anthers long-tailed, and apically long appendaged. Styles short, obtuse. Involu- 

 cral-scales oo -seriate, imbricate, and often spinescent. Receptacle with setae or 

 with cleft pales. Pappus setose or narrowly paleaceous, mostly oo -seriate. Co- 

 rollas all 5-merous. Leaves alternate, often spinose. (Genera 57-60.) 



X. CYNAROIDE.E, p. 771. 



B2. Heads heterogamous, radiate, or abortively homogamous and discoid. 

 c. Anthers basi-obtuse, apically appendaged. 

 d. Receptacle mostly naked. 



e. Involucral scales imbricated. 



f. Style-branches flat. Pappus setaceous, rarely poleaceous or none. Leaves 

 mostly alternate, rarely dissected. (Genera 5-21.) 



III. ASTERE.E, p. 766. 



/2. Style-branches truncate or hairy-tipped. Involucral scales i-2-seriate, 

 mostly herbaceous, subequal, rarely 3 -seriate, with short outer scales. 

 Pappus mostly paleaceous or awned. Leaves opposite or alternate. 

 Ray-flowers pistillate, fertile or neuter ; in ours not persisting on the 

 fruit, rarely none. (Genera 42-47.) VI. HELENIOIDE.E, p. 769. 



e2. Involucral scales i-2-seriate, subequal, little imbricated, sometimes with a 

 calyculus, rarely oo-seriate. Receptacle mostly naked. Styles pencilled, 

 truncate or appendaged. Hermaphrodite flowers usually fertile. Pappus 

 setose, rarely none. Leaves mostly alternate. Flowers, especially of ray, 

 usually all fertile. (Genera 53-55.) VIII. SENECIONE^:, p. 770. 



d2. Receptacle with chaff subtending the flowers. Involucral-scales i-oo-seriate, 

 mostly herbaceous. Style-branches truncate or appendaged. Pappus awn-like, 

 or paleaceous, or none. Leaves, at least the lower, often opposite. Disk 

 mostly yellow, and ray mostly homochromous. (Genera 33-41.) 



V. HELIANTHOIDE^E, p. 768. 



