CicHORACE^. COMPOSITE. 465 



Tribe VIII. CICHORACE^. Vaill, Juss. 



Style cylindraceous above, the summit as well as the rather obtuse 

 branches uniformly pubescent ; the stigmatic lines terminating below 

 or near the middle of the branches. — Plants with a milky juice 1 

 Leaves alternate. 



CONSPECTUS OF THE GENERA. 



Subtribe 1. Lampsane^. — Pappus none. Receptacle not chaffy. ' 



177. Lampsana. Achenia obscurely striate. Involucre erect. Heads paniculate. 



178. Apogon. Achenia many-ribbed. Involucre connivent in fruit. Heads soli- 



tary or umbellate. Cauline leaves often opposite. 



Subtribe 2. HYosERiDE.a:. — Pappus either wholly or partly chaffy or squamellate. 

 Receptacle not chaffy. 



* Involucre simple, equal, scarcely in 2 series. 



179. Krigia. Pappus of 5 broad chaffy scales and 5 alternate bristles. 



180. Cynthia. Pappus of numerous short squamellae and capillary bristles. 



* * Involucre double or ivibricated. 



181. SooRzoNELLA. Pappus of 10 short chaffy scalcs, bearing long capillary awns. 



182. Calais. Pappus of 5 elongated and scarious (often bifid) awned scales. 



183. CicHORiuM. Pappus veiy small, multi-squamellate. Flowers blue ! 



Svibtribe 3. Scorzonere^. — Pappus setose, or plumose. Receptacle not chaffy. 



184. Stephanomeria. Achenia truncate. Pappus plumose. Heads 3-6-flowered. 



185. Rafinesquia. Achenia rostrate. Pappus plumose. Heads many- flowered. 



186. Leontodon. Achenia fusiform or slightly rostrate. Pappus plumose. 



Heads many-flowered. 



Subtribe 4. Lactuce^. — Pappus capillary, not plumose. Receptacle not chaffy. 

 * Pappus dirty white or tawny, fragile. Achcyiia not rostrate. 



187. Apargidium. Pappus barbellate, in a single series. Heads many-flowered. 



188. HiERACiuM. Pappus scabrous, in a single series. Heads 20-many-flow- 



ered (yellow). Achenia oblong or columnar. 



189. Nabalqs. Pappus scabrous, copious. Heads 5-30-flowered (ochroleucoua, 



whitish, or purplish), nodding. Achenia linear-oblong, cylindrical. 



190. Lyqodesmia. Pappus scarcely scabrous, very copious. Heads 5-10-flow- 



ered (rose-purple), erect. Achenia linear, elongated. 



* ♦ Pappus bright white (except in Pyrrhopappus and a single Mulgedium). 

 +■ Achenia terete or angled, not evidently compressed nor rostrate. 



191. MALACOTHRi.t. Pappus in a single series, soft ; the bristles sparingly bar- 



bellate near the base. Achenia short, truncate. 



VOL. II. — 59 



