SVNGENESIA. 453 



* Discoid, the florets of the marc'in bcino^ 

 obsolete or inconspicuous, from the smaUncss 

 or pccuhar form of the corolla ; as Arttwisia^ 

 Engl. Bot. L 338,978, 1230; Tamicctum, 

 f.1'220; Co;?^:y/, f. 1195 ; and GiiaphaliiDJi, 

 t. 267, llo7- In the last the marginal flo- 

 rets are mostly o-cleft and tubular like the 

 rest, only wanting stamens. Caution is re- 

 quisite to detect the difference between this 

 section and the preceding Order. 



** Ligidatc, 2-lippccI, of which Perdiciiim, 

 a rare exotic genus, is the only Distance. 



*** Radicuif, the marginal florets ligulate, 

 forming spreading conspicuous rays; as Bel- 

 lis the Daisy, t. 424; Jster, t. 87, a very 

 numerous genus in America ; Chri/santhemiun, 

 f, 601, 540; Inula, t. 1546, &c. This sec- 

 tion seems, at first sight, a combination of 

 the first and third sections of the former Or- 

 der, but this is chiefly in the form of its co- 

 rollas. It is rather an approach of that third 

 section towards M'hat is equivalent to becom- 

 ing double in other tribes. Accordingly, the 

 Chamomile, Anthemis nohilis, t. 980 ; Chrij- 

 santhcmiwi Leucanthemum, t. 601 ; and 



