Class XIX. SYNGENESIA, 



Anthers united into a tube. Flowers 

 compound. 



Order I. POLYGAMIA MQUALIS. Flo- 

 rets all perfect, each having 5 stamens and 

 1 pistil, and producing ] seed. 



* Corolla of eachjloret ligulate. Semiflosculosi of Tournefort. 



379. HYPOCHiERIS. Receptacle chaffy. Seed-dcwn 

 feathery. Calyx somewhat imbricated. 



381. CICHORIUM. T^ec^i?^. slightly chaffy. Z)ow« chaf- 

 fy, shorter than the seed. Cal. double. 



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

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

 duous. 

 377. HIERACIUM. Z2ec^;:>^. almost naked, dotted. Down 



simple, sessile. Cal. imbricated, ovate. 

 376. APARGIA. i^^c^/*/. naked, dotted. JDotow feathery, 

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

 most imbricated. 

 371. PICRIS. Recept. naked. Doiim feathery. Seeds 

 furrowed transversely. Cal. double; innermost 

 equal ; outer lax. 

 370. TRAGOPOGON. Recept. naked. Do\i)7i stalked, 

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

 2 rows. 

 375. LEONTODON. Recept. naked. Dowi stalked, 

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

 most lax. 

 373. LACTUCA. Recept. wakedi. Z>ott;w stalked, simple. 

 Cal. imbricated, simple, cylindrical ; scales membra- 

 nous at the maigin. 



