TETRADYN. SILI&. 203 



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

 May, June. ^ , or I/ . 



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

 Flowers very pale purplish, sweet-scented, especially towards even- 

 ing. Cat. leaves cohering by their upper part. (Sm.) 



20. BRASSICA. 



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

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

 icaul, lowe'r ones lyrate toothed. Lightf. p. 359. j. B. 

 t. 2146. 



H.vtt. 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. 

 : Cultivated 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. E. B. t. 2176. 



HAB. Borders of fields. Fl. Apr., May. $. 



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

 amplexicaul, ovato-acuminate, subglaucous ; all .more or less tooth- 

 ed. Flowers yellow, rather large. 



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

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



HAB. Rocks by the sea- side, Inchkeith, G. Don. Inch Colm, Maugl<. 

 Fl. May, June. # . 



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

 most undivided but toothed. Flowers large, yellow. The origin of 

 all our garden Cabbages. 



4. Br. Monensis (hie of' Man Callage) , leaves pinnatifid, stem 

 nearly leafless glabrous, pods smooth, beak monospermous. 

 Br. 'Lightf. p. 353. t. 15, and E. B. t. 962 (Sisymbrium 

 Mm.). 



HAB. Sea-shores in many places. Bute,, S. of Mountstewart j on the 

 W. side of Arran, and at Lamlash Bay j in Cantire on the western 

 vside, Lightf. 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. 7/ . 



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

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



5. Br. campcslr is (Field Cabbage), root and stem slender, leaves 

 cordate acuminate amplexicaul lower ones lyrate dentate sub- 

 hispid. E. B. /. 2234. 



HAB. Corn-fields in Bute and Arran, Lightf. By the side of the 



