SYNGENESIA— POLYGAMIA-iEQU. Sonchus. 343 



Corn Sow-thistle. Petiv. H. Brit. t. 14./. 6. 



In corn fields and hedges, on a clay soil. 



Perennial. August. 



Root fleshy, milky, creeping widely, with oblong, tuberous, white 

 branches, which often render it very difficult of extirpation. Stem 

 3 or 4 feet high, not much branched, round, leafy, hollow, rough 

 towards the top, with viscid, black hairs. Leaves runcinate, heart- 

 shaped, rather than arrow-shaped, at the base, and bordered 

 with little sharp unequal teeth, not with bristly hairs like the pre- 

 ceding J the upper ones undivided and entire. Panicle cymose, 

 or imperfectly umbellate, rough with dark glandular hairs ; 

 sometimes it is compound and many-flowered. Cal. in like man- 

 ner hairy. Fl. deep yellow, often 2 inches wide, and very con- 

 spicuous ; frequently reddish underneath. Tube of each Jloret 

 hairy. Seed furrowed. Down smooth. 



4. S. oleraceus. Common Sow-thistle. 



Flower-stalks cottony. Calyx smooth. Leaves runcinate, 

 toothed. 



5. oleraceus. Linn. Sp. PI. 1116. Willd. v. 3. 1514. Fl. Br. 817. 

 Engl. Bot. V. 1 2. t. 843. Curt. Lond.fasc. 2. t. 58. Hook. Scot. 

 227. 



S. n. 21y. Hall. Hist. V. I. \0. 



S. Isevis. Raii Sijn. 162. Ger. Em. 292. f. Matth. Valgr. v. 1. 



452./. Corner. Epit. 279./. Dad. Pempt. 643./. 

 S. laevis vulgaris, foliis laciniosis. Lob. Ic. 235./. 

 S. laevis, laciniatis foliis. Dalech. Hist. 572./. 

 S. laciniatus non spinosus. Bauh. Hist. v. 2. 1016./. 

 Smooth Jagged Sow-thistle. Petiv. H. Brit. t. 14./. 9j also/. 10. 

 /3. Sonchus oleraceus. FL Dan. t. 682. 

 S. n. 21/3. Hall. Hist. v.\. 10. 

 S. laevis minor, paucioribus laciniis. Raii Syn. 163. Bauh. Pin. 



124. 

 S. Isevis latifolius. Ger. Em. 292./ Moris, sect. 7. t. 3./ 2. 

 Smooth Broad Sow-thistle. Petiv. H. Brit. t.\4./. 8. 

 y. Sonchus n. 22 /3. Hall. Hist. v.\.]0. 

 S. asper laciniatus. Raii Syn. 163. 



S. aspera. Matth. Valgr. v. 1 . 45 1 ./. Dalech. Hist. 572. /. 

 S. asperior. Ger. Em. 29 1 ./ 



Prickly Jagged Sow-thistle. Petiv. H. Brit. f. 14./ 5. 

 L Sonchus n. 22 a. Hall. Hist. v. 1.10. 

 S. asper non laciniatus. Raii Syn. 163. 

 S. asper dentatus. Dill, in Raii Syn. 163. n. 9. 

 S. asper. Ger. Em. 291./ Dod. Pempt. 643./. 

 S. asper laciniatus latifolius. Loes. Pruss. 257. t. 77 » 

 S. aspera. Loh. Ic. 234./ Fuchs. Hist. 674./. 

 S. tertius asperior. Dod. Pempt. 643./ 3. 



