J 18 TETRADYNAMIA SILIQUOSA. Sinopis, 



during- the cold season for its seed, from which they express 

 an oil, used by them for various purposes, chiefly to anoint 

 their bodies with. 



Root almost simple, annual. Stem dichotomous, round, 

 and smooth, height of the whole plant in a good soil from 

 two to four feet ; its duration about three months, being ge- 

 nerally sown in November, and the ripe seed gathered in Fe- 

 bruary. Leaves stem- clasping; the lower ones ly rate with 

 margins more or less scolloped ; the superior ones entire, of an 

 obtuse, triangular shape, with broad-cordate, stem-clasping 

 base, all are smooth on both sides, and somewhat fleshy, from 

 two to eight inches long. Racemes terminal. Flowers nu- 

 merous, pretty large, bright yellow. Petals round. Stamens 

 twice the length of the claws of the petals. Siliques spread- 

 ing, almost horizontal, sub-cylinchic, smooth, two-celled, 

 from two to three inches long, with a tapering acute beak of 

 from half an inch to an inch in length. Seeds small, smooth, 

 of a lijiht brown colour. 



2. S. glauca. R. 



Annual. Siliques long-pedicelled, erect, sub-cylindric, 

 smooth, with a long, somewhat clavate beak. Stem and 

 branches straight, smooth, glaucous. Leaves stem-clasping, 

 smooth in every part ; the lower ones lyrate, the superior ones 

 sub-lanceolate. 



Beng. Sliwet Rai, white mustard. 



Cultivated as a field crop in all the northern parts of India 

 during the cold season. 



Root very ramous, of three or four months duration. The 

 seed time being November, and harvest in February. 



Stem straight, with many straight scattered branches, all 

 are round, smooth and glaucous, height of the whole plant 

 from three to five feet. Leaves stem-clasping-, the lower and 

 cauline ones lyrate, with lobes sub-opposite, obtuse, and near- 

 ly triangular, the terminal one nearly round and more or less 

 scollop-toothed ; the superior or floral leaves sub-lanceolate, 



