220 TETRADYNAMIA— SILIQUOSA. Sinapis. 



very smooth. Pods cylindrical, smooth, veiny, without a beak, 

 crowned with the almost sessile stigma. Seeds large, globose. 

 From this plant our field and garden Cabbages, with their nume- 

 rous varieties, have originated. 



5. B. monensis. Isle of Man Cabbage. 



Leaves glaucous, deeply pinnatifid, nearly smooth ; lobes 

 oblong, unequally toothed. Stem simple, smooth. Pods 

 quadrangular; beak lodging two or three seeds. 



B. monensis. Hwrfs.291. With.h^'^. Com/?, ed. 4. 114. Br. in Ait. 

 H. Kew. V. 4. 124. Hook. Scot. 203. DeCand. Syst. v. 2. 599. 



Sisymbrium monense. Linn. Sp. PI. ed. 1 . 658. Fl. Br. 704. Engl. 

 Bot. V. 14. t. 9C2. Lightf. 353. t. 15./. 1 . Davies Botanol. 64. 

 Dicks. H. Sice. fasc. 17.13. Lam. ;. 565./. 2. 



Eruca monensis laciniata lutea. Raii Sijn. 297. 



E. monensis laciniata, flore luteo majore. Dill. Elth. 135. t. 111. 

 /. 135. 



Man Rocket. Petiv. H. Brit. t.46.f. 7. 



On the sandy sea coast, but not frequent. 



In the Isle of Man, between the landing place at Ramsey and the 

 town, plentifully : also on the coast of Cumberland, and in Wal- 

 ney island. Ray. In Anglesea. Dill. Near Abermeney ferry, 

 Anglesea, but now very scarce. Rev. H. Davies. On the shore 

 of the Mersey, near Liverpool. Mr. Robert Roscoe. In the isles 

 of Bute and Arran, and several parts of the western coast of 

 Scotland, Lightf. Between Dundee and Forfar. Mr. G. Don. 



Perennial. June, July. 



Root tapering, very long, woody, divided at the crown. Stems so- 

 litary from each division of the root, ascending, leafy, round, 

 smooth, generally quite simple, 6 or 8 inches high, but when very 

 luxuriant much taller, and sometimes branched. Leaves glau- 

 cous, somewhat lyrate, mostly radical, very deeply pinnatifid and 

 jagged, their lobes extremely varioiis in width, mostly acute, 

 sometimes blunt ; they are rather fleshy, rarely a little hairy. Fl. 

 corymbose, bright lemon-coloured, veined with purple, as large 

 as the last. Cal. converging, hairy at the summit. Pods nearly 

 upright, large, smooth, veiny, quadrangular j beak almost half 

 their length,''tapering, ribbed, tipped with the small stigma, and 

 containing the rudiments of 3 seeds, all which frequently come 

 to perfection. The seeds are numerous in each proper cell of the 

 pod. The Jierb when bruised has a pungent fetid scent. 



Sisymbrium monense of the 2d edition oi Linn. Sp. PI. is Diplotaxis 

 saxatilis cf DeCand. Syst. v. 2. 636, and is said by the latter to 

 be intermediate between that new genus and Brassica. 



343. SINAPIS. Mustard. 

 Linn.Gen.342. Juss.2'SS. Fl.Br.72\. Comp.ed. 4.109. Br. in 



