SYNGENESIA : POLYGAMIA i^QUALIS. 431 



this way it is faid to be much preferable to the 

 common diacodium^ and may given to tender con- 

 ftitutions with more fafety. 



PRENANTHES. Gen.pl.<)M. 



Recept. nudum. Cal. calyculatus. Pappus fimplex, 

 fubfefTilis. FIcfculi fimplici ferie. 



PRENANTHES fiofculis quinis, foliis runcinatis. 

 Sp. pi. II 21. {Ger. em. 293./. 5. Pet, herb. t. 15. 

 /. 5. Oed. 'Dan. t. 509. opt.) 



Wall Lettuce, Ivy-leav'd wild Lettuce. Jnglis. 



On fhady rocks, and on the walls of old caftlcs in 

 the lowlands. %. VII. 



The ftalk is two or three feet high, and greatly 

 branch'd at the top. The leaves have one or 

 two pair of haflate reverfed pinna, with a very 

 large triangular one at the end, flightly divided 

 into three acute lobes, which are dented on the 

 edges. They embrace the ftalk at the bafe, and 

 the middle rib on the under fide is acute and 

 ferratcd. The uppermoft; leaves are lanceolate. 

 The branches are naked, and form a lax panicle 

 of numerous fmall yellow pendulous flow- 

 ers. The calyx confifts of five fcalcs, with four 

 fmaller fupplcmentary ones at the bafe. The 

 flower has only five ligulated florets, which are 

 truncated and have four dents. The feeds are 

 bla.ck, ftreaked, of an oval-acute figure, and 

 crown'd with a fimple down, which ilands en a 

 fhort pedicle. 



LEONTODON. 



