TETRADYN. SILia. 203 



Arthur's Seat, Mr. Arnott. Water of Leith, Mr. D. Stuart. Fl. 

 May, June. <^ , or 1/ . 

 One foot to two feet high, simple or a little branched, pubescent. 

 Flowers very pale purplish, sv/eet-scented, especially towards even- 

 ing. Cal. leaves coliering by their upper part. {Sni.) 



20. BRASSICA. 



1. Br. Napns {wild Nave w or Cole-seed), root caulescent fusi- 

 form, leaves smooth, upper ones cordato-lanceolate amplex- 

 icaul, low^r ones lyrate toothed. Light/, p. 359. E, B. 

 t. 2146. 



Hab. Corn-fields, frequent, and on banks. Rocks behind Edinb. 

 castle. Fl. June. ^ . 



One foot to two feet high. Lobes of the lower leaves crenate ; upper 

 ones entire, subglaucous. Petals yellow, rather small. Pods torulose. 

 — Cultivafed for the oil produced by the seeds ; and the seeds, by 

 pressure, are formed into cakes, which, after the extraction of the 

 oil, are useful for manure as well as for fattening cattle. 



2. Br. Rapa {Turnep), root caulescent orbicular depressed 

 fleshy, radical leaves lyrate scabrous those of the stem nearly 

 entire smooth. £.54^.2176. 



Hab. Borders of fields. F/. Apr., May. J. 



Varying exceedingly in height, according to the soil. Upper leaves 

 ainplexicauljOvato-acuminate, subglaucous ; all more or less tooth- 

 ed. Flowers yellow, rather large. 



3. Br. oleracea (Sea Cabhage), root caulescent rounded fleshy, 

 all the leaves glabrous glaucous waved and lobed. E.B.t. 637. 



Hab. Rocks by the sea- side, Inchkeith, G. Don. Inch Co\m, Maugh. 

 Fl. May, June. ^ . 



Various in height, 1 foot to 2 feet. Leaves thick, subcarnose, the upper- 

 most undivided but toothed. Flowers large, yellow. — ^I'he origin of 

 all our garden Cabbages. 



4. Br. Monensis {Isle of Man Cabbage), leaves pinnatifid, stem 

 nearly leafless glabrous, pods smooth, beak monospermous. 

 Br. Light/, p. 353. t. 15, and E. B. I. 962 {Sisymbrium 

 Mon.). 



Hab. Sea-shores in many places. Bute, S. of Mountstewart ; on the 

 W. side of Arran, and at Lamlash Bay ; in Can tire on the western 

 side. Light/. Shores of the Solway Firth, abundant, Maugh. 

 Mouth of the Clyde, about Largs, and on the coast thence to Ayr ; 

 also apposite the' shores of Bute and Arran, frequent, Mr. Murray. 

 — Confined, I believe, to the western shores. Fl. June, July. % . 



Eight to ten inches high, slightly hispid. Segments of the leaves 

 linear, more or less toothed. Flowers rather large, yellow. 



5. Br. campcstris {Field Cabbage), root and stem slender, leaves 

 cordate acuminate amplexicaul lower ones Ivrate dentate .sub- 

 hispid. E. B. t. 2234. 



Hab. Corn-fields in Bute and Arrt^n, Lightf. By the side of the 



