of the Class Composites. 179 



constituting a distinct genus, to which, it is very probable, the 

 Hypocharis sonchoides of M. Kunth should also be referred. 

 From Hypochosris, which must now be limited to H. glabra and 

 minima, it will be necessary to separate H.radicata and maculata, 

 essentially distinguished by having the pappus uniformly stipi- 

 tate. This division, first proposed by Scopoli under the name 

 of Achyrophorus, has been very properly adopted by Gsertner. 

 The genus Seriola of Linnaeus, the Achyrophorus of Vaillant, 

 which also belongs to this family, is characterized by a simple 

 polyphyllous involucrum, and by the rays of the pappus being 

 dilated towards the base. 



Trib. 3. LACXUCEa;. Receptaculum epaleatum. Antherce basi 

 bidentatse. Fappus fugax, mollissimus, capillaceus. 



Chondrilla, L. 



Involucrum simplici ordine polyphyllum, connivens, basi squa- 

 mulis pluribus calyculatum. Receptaculum nudum. Achenia 

 fusiformia, tuberculata. Pappus stipitatus. 



Involucrum simplici ordine poly-(8 — 12)phyllum, cylindricum, 

 connivens, basi squamulis pluribus (8 — 10) calyculatum : 

 foliolis Eequalibus, margine invicem so imbricatis. Recep- 

 taculum nudum. Flosculi indefiniti. Antherce appendicuM 

 ligulata V. ovali diaphan^ coronatse, basi acute bidentatae. 

 Stylus hispidulus. Stigmata semicylindrica, obtusa, brevia, 

 crassiuscula, minutissira^ papillosa. Achenia fusiformia, 

 subtetragona, hinc convexa, inde sulcata, concaviuscula, 

 supern^ tuberculata, apice in stipitem longum filiformem 

 producta. Discus epigynus depresso-capitatus ! Pappus 

 fugax, tenuissim^ capillaceus : radiis duplici ordine copio- 

 sissimis, basi solutis. 



Herbae foliis radicalibus scepius runcinatis, floribus citriniSf pedun- 



culatis. 



Sect. 



