66 COMPOSITE. 



Tribe III. Asteroide^. Style of the perfect flowers cylindraceous; the branches 

 Unear, externally flattish, and minutely and equally pubescent above ; the stig- 

 matic'lines prominent, extending about to the origin of the exterior pubescence. 



Tribe IV. Senecionide^;. Style of the perfect flowers cylindraceous; the 

 branches linear, tmncate at the summit and penicillate, or often produced 

 into a conical or elongated hispid appendage ; the stigmatic lines rather 

 broad and prominent, extending to the commencement of the appendage or 

 hairy portion. 



Tribe V. Cynare;e. Style of the perfect flowers nodose-thickened and often 

 penicillate at the summit ; the stigmatic lines not prominent, reaching to and 

 confluent at the summit of the externally puberulent branches. 



Suborder II. LABIATIFLOR^.— Corolla of the perfect flowers bilabiate. 



Tribe VI. Mutisiace^:. Style of the perfect flowers cylindraceous or somewhat 

 nodose above ; the branches obtuse or truncate, externally very convex and 

 minutely pubescent above. 



Tribe VII. NassauviacEjE. Style of the perfect flowers not nodose-thickened 

 above ; the branches linear, rather long, truncate, penicillate at the summit. 



Suborder III. LIGULIFLOR^E.— Flowers all perfect and ligulate. 



Tribe VIII. Cichorace;e. Style cylindraceous above ; the branches rather 

 long and obtuse, equally pubescent ; the stigmatic lines terminating below 

 their middle.— Plants with milky juice. 



SubordebI. TUBULIFLOR^. DC. 



Corolla of the perfect flowers tubular, and regularly 5- (rarely 4-) 

 toothed or lobed. Pollen globose, echinulate, or (in Cynarea) rarely 

 smooth and elliptical. 



Tribe L VERNONIACE.J:. Less. 



Heads discoid, with the flowers all tubular and perfect (homoga- 

 mous), or rarely radiate ; the ray flowers ligulate and pistillate. Co- 

 rolla occasionally palmate or obscurely bilabiate. Style cyhndricat 

 above ; the branches subulate and elongated (rarely short and obtuse), 

 equally hispid ; the stigmatic lines terminating below or near their 

 middle, not confluent. 



CONSPECTUS OF THE GENERA* 



Subtribe 1. Vernonije. — Heads discoid, homogamous; 



1. Vernonia. Heads several-many-flowered. Pappus of hair-like bristles. 



2. Stokesia. Heads many-flowered. Pappus of 4-5 long bristly deciduous scales. 



3. Elephantopus. Heads 3-5-flowered, aggregated in glomerules. Pappus of 



several persistent chaffy bristles or awns. 



Subtribe 2. Pectide.e. — Heads radiate, heterogamous. 



4. Xanthisma. Corolla ofthe disk regular. Leaves glandless. 



5. Pectidopsis. Corolla regular. Leaves punctate. Pappus coroniform. 



6. Pectis. Corolla of the disk obscurely bilabiate. Leaves punctate with glands. 



Pappus chaffy and mostly awned. 



