SYNGENilSlA. .lit^UAl^IS. 123 



Scapes 1-flowered; leaves runcinalc. 

 Species. 1. L. Taraxacum. NutjruliiiC-d: introduced. — 

 A genus of 5 species, indigenous to Europe. 



528. PRENANTHES. L. 



Flostidi definite, 5 to 20. Calix calicniatc. 

 Heceptack luikctl. Fappus simple, subscssiie. 



A polymorphous, but natural genus, principally herba- 

 ceous, rarely alu'ubby, and 1 species s])i!iescenL; leaves lor 

 the most purt ang-ularly dentate, ])in!iauiid, or runcinatc, 

 rarely minute and subulate; fijwei's oiten paniculate, cyu- 

 glomeratc, subcorymbose or solitary and terminal, purj>- 

 i:sh, wiiite, ociiroieucous, or rarely yellow. Calix 4, 5; 8, 

 or 12-parted, souamose at the Ijase. Tappus somewhat 

 scabrous. 



SpiiciES. 1. P. cJ^l^dma. 2. cordrJa. 3. vlr^aia. 1\ 

 rtibicunda. Willd. 4. aimpltix. Ph. 5. crepidinea. 6. albiu 



7. Ssrpentaria. Ph. Scarcely distinct enough from P. alba. 



8. racemosa. 9. illinoends. 



lO.juucca. Ph. Dwarf and nearly leafless; stem numer- 

 ously and dichotomously branched, g-rooved; leaves subu- 

 late and sheathing, very short, brauchlets subfastig'atc, I- 

 Howered; calix S-cleft, 5 to 7-flowered. IIah. from tlx- 

 river Platte to the Mountains, in the alluvial sand-hills oi:' 

 the Aiissouri. Flowering in May. Plov.cra rcsuceous. 

 Obs. Root tuberous and brittle, \i:.vy deep and creepinir, 

 charged with an abundant milky sap. Stems about 12 

 inches high, appearing nearly leaRess. lladical leaves 

 none, those of the stem from 1 to 10 lines long and pun- 

 gently acute 



11. * aphylla. Dwarf and almost leafless; stem nearlv 

 simple, sparingly and virgately branclied, grooved; radical 

 leaves naiTow linear, entire, cauline minute, subulate, and 

 very reniote; branches 1-fiowered, elongated; calix 8-par- 

 ted 10 to 12-flowered. Hab. Near St. Mary's in West 

 I'lorida. — Dr. Baldwyn. Oi;s. lioot perennial. Stem 

 smooth, about 12 inches higii, with only 2 or 3 remarka- 

 bly naked virgate brancijes; leaves t;carcely visible; flow- 

 ers large, and pale rose-colour. Nearh' allied to the prece- 

 ding. 



A genus of near 40 species scattered over both hemis- 

 pheres; Japan aflbrds 10 species, India 4, Europe and the 

 Levant 9, Siberia 2, Caraccas 1, and 1 in t!ie island of 

 Tenerifle, a few others ure of uncertain localitv.— Several 

 of tlje Nurth American species, in common with other ge- 

 jiera of the Cicuorace-e, afford on incision an abundant 

 fruiky fluid, well ascertain.cd to be Opium in several spe- 



