SYNGENESIA, iEQUALIS. 
89 
pavements, and in turnpike-roads. In pastures, grass-plots, 
fields and road-sides, every where abundant. It is possessed 
of medicinal properties, among which its diuretic power is 
universally known. Perennial. All summer. 
330. PRENANTHES. Gen.pl. 1236. (Cichoracea^.) 
Flosculi definite^ 5 to §0. Calix caliculate. 
Receptacle naked. Pappus simple^ sub- 
sessile. 
1. P. radical leaves angolar-liastate, dentate, sub-aiba. 
lobate I those of the stem subrotund-ovate, den- 
tate, petiolate ; upper ones lanceolate ; panicle 
loose, fascicles terminal, nutant; calices 8-fid, 
9-10-flowered. — JfllkL and Fursh. 
P. suavis, Parad. Lond. 85. 
Icon. Bot. Mag. 1079. 
White iflowered Wild Lettuce^ or Ivy4eaf. 
From two to live feet high. Leaves thick; flowers yellow- 
ish-white; calices purple. On the edges of shady woods; not 
rare. Perennial. August, September. 
2. P. stem paniculate, above; leaves petiolate, ^or^ata 
cordate, dentate, ciliate; floral leaves sessile, 
oblong, very entire ; paipcle loose, raceme- 
flowered ; flowers nutant ; calices 6-clsft, 6-flow- 
ered.—Willd, hort. beroL £5, and Purslu 
From eighteen inches to two and a half feet high. Leaves 
thin, or semi-membranaceous. Flowers slender, whitish-yel- 
low. In shady woods ; rare. Perennial. August, September. 
3. P. leaves dentate, rough ; those of the root pal- serpemiuia. 
mate-sinuate, of the stem long, petiolate, sinu- 
ate-pinnatifid, nearly three lobed ; intermediate 
divisions three-parted, upper ones lanceolate ; 
racemes terminal, subpaniculate, short, nutant ; 
calices 8-cleft, l£-floWered.-.-Pitrsft. 
P. Serpentaria, Pursh. 
Icon. Pursh. FI. Am. Sep. vol. £. t. 24. 
VOL. II. 9 
