Class XIX. SYNGENESIA. 



Anthers united into a tube. Flowers 



compound. 



Order I. POLYGAMIA JEQUALIS. Flo- 

 rets all perfect, each having 5 stamens and 

 1 pistil, and producing 1 seed. 



* CoroUa of eachjloret ligulate. Semiflosculosi of Tournefort. 



379. HYPOCH^RIS. Receptacle chaffy. Seed-domi 

 feathery. Calyx somewhat imbricated. 



381. CICHORIUM. i?ece/j^. slightly chaffy. Z)oton chaf- 

 fy, shorter than the seed. Cat. double. 



378. CREPIS. Recept. roughish. Down simple, partly 

 stalked. Cal. double; outermost lax, tumid, deci- 

 duous. 



377. HIERACIUM. i2ec^^^. almost naked, dotted. Down 

 simple, sessile. Cal. imbricated, ovate. 



376. APARGIA. Recept. naked, dotted. Dowi feathery, 

 sessile, unequal and various. Cal. double ; inner- 

 most imbricated. 



371. PICRIS. Recept. naked. Doxson feathery. Seeds 

 furrowed transversely. Cal. double ; innermost 

 equal ; outer lax. 



370. TRAGOPOGON. Recept. naked. Down stalked, 

 feathery. Cal. simple, of several equal scales, in 

 2 rows. 



375. LEONTODON. Recept. naked. Down stalked, 

 simple. Cal. imbricated, double; scales of the outer- 

 most lax. 



373. LACTUCA, Recept. naked. Down stalked, simple. 

 Cal. imbricated, simple, cylindrical ; scales membra- 

 nous at the margin. 



