332 



374. PRENANTHES. Recept. naked. Dmion nearly ses- 

 sile, simple. Cal. double. Florets in a single row. 



372. SONCHUS. Recept. naked. Down sessile, simple. 

 Cal. simple, imbricated, swelling at the base. 



380. LA PS ANA. Recept. nakeA. Down none. Cal. dou- 

 ble ; innermost of equal channelled scales. 



** Florets all tubular, lax and spreading in the limb. 

 Capitati. 



387. CARLINA. Calyx swelling; outer scales spinous ; 



inner coloui'cd, polished, radiant. Recept. chaffy. 

 Down feathery. 



382. ARCTIUM. Ca/. globose ; scales spinous, hooked, 



inflexed. 



384. CARDUUS. Cal. tumid, imbricated ; scales spi- 



nous. Recept. hairy. Down deciduous, capillary, 

 roughish. 



385. CNICUS. Cal. tumid, imbricated; scales spinous. 



Recept. hairy. Down deciduous, feathery. 



386. ONOPORDUM. Ca/. tumid; scales spinous, spread- 



ing. Recept. cellular, somewhat chaffy. 



383. SERRATULA. CaZ. nearly cylindrical, imbricated ; 



scales unarmed. Down permanent. 



Centaur ea. 1 . 



*** Florets all tubular, parallel, crowded, nearly on 

 a level at the top. Discoid. 



389. EUPATORIUM. Recept. naked. Down rough. 



Cal. imbricated, oblong. Style cloven halfway do^vn, 

 prominent. 



390. CHRYSOCOMA. Recept. naked. Down rough. 



Cal. imbricated, hemispherical. Style scarcely longer 

 than the florets. 



388. BIDENS. Recept. chaffy. Down rough with re- 



versed prickles. Cal. of many parallel, channelled 

 scales. Cor. occasionally radiated. 



391. DIOTIS. Recept. chaffy, with hairy-tipped scales. 



Down none. CaJ. imbricated, hemispherical. Flo- 

 rets with 2 spurs, which border the seed. 



Tanacetuln. Senecio 1, ylster]. Anthemis 2. 



