308 CLASS XIX. ORDER I. 



generally elliptical or lanceolate. The rest are pinnatifid or ly- 

 rate, with scattered, irregular segments. Scapes erect, long and 

 slender, a little striated, smooth, with a few, fine, scattered hairs. 

 Flowers small, solitary. Calyx composed of a simple row of 

 smootlileafets. Corolla yellow. Seeds oblong, blackish, crowned 

 W'ith a border of five short, roundish, membranous scales, sepa- 

 rated by bristles several times their length. — On sandy hills and 

 road sides, flowering in June and July. — Annual. 



329. SONCHUS. 

 SoNCHUs oLERACEus. L. Commoti Sow-Thistlc. 



Peduncles downy; calyx smooth; leaves runci- 

 nate, toothed. Sm. 



Appears late in the season, in every species of waste ground 

 and rubbish. Stem erect, three feet high, round, smooth, brittle, 

 hollow. Leaves smooth, toothed and lobed in a runcinate man- 

 ner, clasping the stem, their lobes bordered with teeth or spines. 

 Peduncles axillary and terminal, covered with a white, fine, 

 deciduous down. Calyx smooth, swelling out at base. Corolla 

 yellow. Flowers about half the size of the dandelion. Down 

 fine and smooth. — September. — Annual. 



* SoNCHus spixuLosL's. Pfickly Sea Sonchus. 



S. FoUis canple-vlcaidibus, obloiigis, luidulatis spinu- 

 losis ; Jloribiis suhunihellatis. 



Leaves clasping, oblong, waved, prickly; flowers 

 somewhat umbel led. 



Stem smooth, few angled, two feet high. Leaves smooth, ob- 

 long, heart shaped at base, the lobes curling backward and clasp- 

 ing the stem, the edges waved, acutely toothed, the teeth ending 

 in short spines. Flower somewhat umbelled, small, yellow. 

 Peduncles smooth, sometimes furnished with very few glandular 

 hairs. Calyx swelling at base, smooth, its scales acuminate and 

 appressed. — Salt marshes. — August. — Annual. 



SONCHCS ACUMINATUS. TT7//f/. BluC SoflcJlUS. 



Peduncles somewhat scaly; flowers panicled ; lower 



