204 TETRADYN. SlLIft. 



road leading from Leith to Queensferry, near Bangholm j and fields 



nficiFForfar, G. Don. Appin, Captain Carmichael. Fl. Aug. 0. 



Root fusiform, but slender. Stem hispid, below. Flowers yellow. " Pod 

 upright, cylindrical, or obscurely 4-angular, veiny, the seeds form- 

 ing slight prominences j the beak awl-shaped, striated, square at 

 its base." Stti. 



21. SINAPIS. 



1. S. arvensis (wild Mustard or Charlock), pods with many 

 angles turgid and knotty longer than the two-edged beak, 

 leaves ovate sublyrate. Light f. p. 360. E. B. t 1748. 



HAB. Corn-fields, too frequent. Fl. May, June. . 

 One to two feet high, rough. Flowers rather large, yellow. 



2. 8. alba (white Mustard), pods hispid turgid shorter than the 

 ensiform beak, leaves pinnatifid. Lightf. p. ,361. E. R. 

 t. 1677. 



HAB. Waste places, frequent. Corn-fields about Edinb., Maugh. 

 H.July. . 



Stem 1 1{ foot high, hairy. Lobes of the leaves variously cut and 

 toothed or erose. Flowers large, yellow. Well distinguished by 

 its long -beak. This plant it is, which, in a young state, is eaten 

 under the name of Mustard, with Cresses (Lepidium sativum). 



3. S. nigra (common Mustard), pods appressed glabrous letra- 

 gonous, style short subulate, upper leaves linear-lanceolate 

 entire glabrous* Lightf. p. 362. E. B. t. 969. 



HAB. Under hedges and waste places. Fl. June. 0. 



Three to four feet high. Lower leaves large, lyrate, rough. Flowers 

 yellow. Pod with a very short beak, or rather only the persistent 

 style and stigma at its summit, quadrangular, its surface scarcely 

 rugged. 



4. S. tenuifolia (jine-leaved Mustard), pods linear glabrous 

 shortly beaked erect, peduncles spreading, leaves lanceolate very 

 acute pinnatifid or bipinnatifid, stem glabrous. E. B. t. 525 

 ( Sisymbrium tenuif.). 



HAB. Coast of Fife at St. David's, Mr. P. Neill. Coast of Fife, be- 

 tween Burntisland and Queensferry, Mr. Greville. FL July, Aug. 



Root thick, woody. Stem one or one foot and a half Ligh. Leaves 

 with a very disagreeable smell. Flowers large, pale yellow. 



22. RAPHANUS. 



1. R. Raphanistrum (wild Radish ov jointed Charlock), leaves 

 simply lyrate, pods of one cell jointed striated. Br. Lightf. 

 p. 62. * E. B. t. 856. 



HAB. Corn-fields, frequent. Fl. June, July. 0. 

 One to one foot and a half high. Leaves petiolate, rough. Flowers 

 yellow, veined. 



2. R. maritiiHUs (Sea Radish), leaves interruptedly lyratCj pods 

 of one cell jointed striated. E. B. t. 



