DICOTYLEDONES— COKOLLIFLOR^ 373 



Tribe 1. Vernoniece. — Style cylindrical; its arms generally long 

 and subulate, sometimes short and blunt, always covered 

 all over with bristles. Illustrative Genera : — Vernonia, 

 Schreb. ; Elephantopus, Linn. 



Tribe 2. Eiqjatoriece. — Style cylindrical ; its arms long and 

 somewhat clavate, with a papillose surface on the outside 

 near the end. Illustrative Genera : — Eupatorium, Tourv. ; 

 Tussilago, Toiirn. 



Tribe 3. Asteroidece. — Style cylindrical ; its arms linear, flat 

 on the outside, equally and finely downy on the inside. 

 Illustrative Genera ;— Erigeron, Linn. ; Bellis, Linn. 



Tribe 4. SenecioidecE. — Style cylindrical, its arms linear, 

 fringed at the point, generally truncate, but sometimes 

 extended beyond the fringe into a short cone or appendage 

 of some kind. Illustrative Genera : — Anthemis, Linn. ; 

 Senecio, Linn. 



The above four tribes correspond to the sub-order 

 Corymbiferse of Jussieu; the next or fifth tribe to the 

 Cynarocephalae of the same author. 



Tribe 5. Cynarece. — Style thickened above, and often with a 

 bunch or fringe of hairs at the enlarged portion ; its 

 branches united or free. Illustrative Genera : — Arctium, 

 Linn. ; Centaurea, Linn. 



Sub-order 2. Labiatiflor.e. — Florets with bilabiate corollas, 

 perfect or unisexual. Juice watery. Of this sub-order we 

 have two tribes : — 



Tribe 6. Mutisiece. — Style cylindi'ical or somewhat swollen ; 

 its arms usually blunt or truncate, very convex on the 

 outside, and either covered at the upper part by a fine uni- 

 form hairiness, or absolutely free from hairs. Illustrative 

 Genera: — Mutisia, Linn.fil. ; Printzia, Cass. 



Tribe 7. Nassauviece. — Style never swollen ; its arms long, 

 linear, truncate, and fringed only at the point. Illustrative 

 Genera : — Nassauvia, Juss. ; Trixis, B. Br. 



Sub-order 3. Liguliflor^. — Florets all ligulate and perfect. 

 Juice milky. This corresponds to the Cichoracea of 

 Jussieu. 



Tribe 8. Cichorece. — Style cylindrical at the upper part ; its 

 arms somewhat obtuse, and equally pubescent. Illustrative 

 Genera : — Cichorium, Linti. ; Taraxacum, Haller. 



