LXX. COMPOSIT.^. 159 



on aflat or convex receptacle. Calyx-tube actuate; limb (called 

 pappus) very mucli varied, either obsolete, annular, or coroni- 

 form, toothed, scaly, bristle-sha])ed or feathery, usually en- 

 larging as the ovary swells, and more or less persistent. 

 Corolla epigynous, tubular, Avith valvate aestivation, either re- 

 gular and 4-5-toothed, or 1-labiate and strap-shaped (ligulate), 

 or rarely 2-labiate. Stamens in the tube of the corolla, alter- 

 nate with its lobes ; anthers usually united by their edges into 

 a tube surrounding the style. Ovary with a single erect ovule ; 

 style filiform, 2-fid in the fertile flowers, mostly simple in the 

 abortive. Fruit a small dry nut or achene, usually crowned 

 with the pappus. Seed without albumen. — A vast and greatly 

 diversified Order, corresponding to the class Synrjenesia in the 

 Linnean system. 



TABLE OF THE TRIBES. 

 * DlsTc-Jiowers tiihidar ^regular ^^-tootlied. 



Tribe 1. Veenoniace^. Style-branches long, much exserted, filiform, 

 equally hispid or bristly on the outer surface. — Heads always discoid. 

 Leaves alternate. (Gren. 1-6.) 



Tribe 2. EupatoriacejE. Style-branches long, much exserted, obtuse or 

 thickened at the point, minutely granulated on the outer surface. — Heads 

 always discoid. Leaves opposite or alternate. (Gen. 7-10.) 



Tribe 3. AsTEEOiDEJi;. Style-branclies linear or lance-linear, flattish or 

 flattened upwards, mostly acute, minutely and equally downy on the outer 

 surface. — Habit various. (Gen. 11-38.) 



Tribe 4. Senecionide^. Style-branches linear, flattish, trvmcate, bristly 

 at the apex only or tipped witli a short, bristly cone. Habit various. (Gen. 

 39-124.) 



Tribe 5. Cynaee^. Style suddenly thickened below the apex, and often 

 hispid at the pomt of thickening ; its branches convex, partially cohering or 

 separate, minutely downy on the outer surface. — Habit various. (Gen. 125— 

 146.) ' 



** Floicers all strap-shaped and bisexual. 



Tribe 6. CiCHORACEJi. Style-branches long, filiform, equally pubescent 

 on the outer surface. — Juice milky, very bitter. (Gen. 147-154.) 



TABLE OF THE GENERA. 

 Tribe 1. Vernokiace^. (Geu. 1-6.) 

 Heads several-flowei'ed ; involucre of many imbri- 

 cating scales. 

 Pappus none, or a small, fleshy ring. 



All the flowers perfect, bisexual, with bell- 

 shaped corollas 1. Ethulia. 



Central-flowers male, funnel-shaped ; marginal 



female, filiform, in many rows 2. LiTOGTNE, 



Pappus of many bristles, in 2 or more i*ows. 



Involuci'e scales and leaves spinous-iiointed . 3. Hoplophyllum. 

 Involucre scales not spinous-pointed ... 4. Vernonia. 

 Pappus of 7-9 spreading, flat, white scales . . 5. Platycarpha. 

 Heads 1 -flowered, corymbose ; involucre of 2 op- 

 posite scales 6. Cory:mbhjm. 



