138 



TETRADYNAMIA SILIQUOSA. 



[CI. 15. 



5. A. hirsuta, T. hirs. 9. 587. (Hairy W.) Leaves toothed and 



bristly. Stem rough, with simple spreading hairs. Pods quite 

 erect, with slightly keeled valves. 

 Walls and rocks. 2£. 5. Stem \hf slightly branched. Fl. white. 



6. A. Turrita, 3. 178. (Tower W.) Leaves toothed, clasping the 



stem. Flower-stalks the length of the calyx, each with a leafy 



bractea. Pods linear, flat, thick-edged, recurved in one direction. 



Old walls, rare ; introduced. $ .5. If. Fl. pale sulphur-coloured. 



341. TURRlTIS. Tower-mustard. 



1. T. glabra, 11. 77. (Smooth T.) Radical leaves toothed, rough ; 

 the rest entire, clasping the stem, smooth. 

 Gravelly past. 0.5,6. Stem '2 — 3 f. wand-like. Pods slender, 

 close to the stem. 



342. BRaSSICA. Cabbage, Turnep, &c. 



1. B. Ndpus, 30. 2146. (Rape, or Cole-seed.) Root spindle-shaped. 



Leaves smooth ; upper ones lanceolate, heart-shaped at their 

 base, clasping the stem ; lower ones lyrate, toothed. 

 Fields and banks. $ . 5. L. glauc. beneath. Fl. yellow. 



2. B. Rdpa, 31. 2176. (Common Turnep.) Root stem-like, fleshy, 



orbicular, depressed. Radical leaves lyrate, rough ; those of the 

 stem smooth ; the uppermost entire. 

 Cult, fields. $ . 4. Radical leaves dark green. Fl. bright yellow. 



3. B. campestris, 32. 2234. (Wild Navew.) Root tapering. Radical 



leaves lyrate, rough ; stem-leaves smooth, clasping, oblong, 

 partly pinnatifid. 

 Fields. 0. 6, 7. Glaucous. Fl. yellow. 



4. B. olerdcea, 9. 637. (Sea Cabbage.) Root stem-like, cylindrical, 



fleshy. Leaves smooth, glaucous, waved, lobed, partly lyrate. 

 Pod without a beak. 

 Cliffs near the sea; rare. £ .5,6. Stem scarred below. Fl. lemon-col. 



5. B. monensis, Sisymbrium monense, 14. 982. (Isle of Man C.) 



Leaves glaucous, deeply pinnatifid, nearly smooth ; lobes oblong, 

 unequally toothed. Stem simple, smooth. Pods quadrangular ; 

 beak lodging two or three seeds. 

 Sandy sea-shores, rare. If. . 6, 7. Stem a span high. Fl, lemon-col. 

 veined. 



343. SINAPIS. Mustard. 



S. arvensis, 25. 1748. (Wild M. Charlock.) Pods with many 



angles, rugged, longer than their own awl-shaped beak. Leaves 



toothed, partly lyrate, or hastate. 



Fields. ©.5. Fl. yellow. Pods about 8-angled ; beak furrowed. 



S. alba, 24. 1677. (White M.) Pods bristly, rugged, spreading, 



shorter than their own flat two-edged beak. Leaves lyrate. 

 Fields. 0.6. Fl. numer. yellow. Beak very long, bristly, sword-sh. 

 3. S. nigra, 14. 969. (Common M.) Pods quadrangular, smooth, 



2. 



