222 TETRADYNAMIA— SILIQUOSA. Sinapis. 



partly ovate, partly lyrate or hastate ; the uppermost sessile. 

 Calyx-leaves linear-oblong, quite horizontal, pale, or yellowish. 

 Pel. obovate, or inversely heart-shaped, bright yellow, turning 

 white in decay. Pods angular, rough with reflexed bristles, and 

 each terminating in a smoother, awl-shaped, furrowed beak, not 

 half so long as the pod itself, compressed at the base. Seeds 

 brown, serving as an inferior sort of Mustard, or rather to adul- 

 terate that made of <S. nigra. 



2. S. cMa. White Mustard. 



Pods bristly, rugged, spreading, shorter tlian their own flat 

 two-edged beak. Leaves lyrate. 



S. alba. Limi. Sp. PL 933. M'illd. v. 3. 555. Fl. Br. 72 1 . Engl. 



Bot. V. 24. t. 1 fi77. Curt. Lond.fasc. 5. t. 46. Mart. Rust. t. 70. 



Hook. Scot. 204. DeCand. Sijsl. v. 2. 620. Fl. Dan. t. 1 393. 

 Sinapi n. 466. Hall. Hist. v. 1 . 203. 

 S. album, siliqiia hirsuta, semine albo vel ruffo. Raii Syn. 295. 



Bauh. Hist. V. 2. 853./. 

 S. album. Ger. Em. 244./. 

 S. primum genus. Fuchs. Hisf.53S.f. 

 S. hovtense. Fuchs. Ic. 307. f. 



S. secundum. Matth. Valgr. v. 1. 515. f. Camer. Epit. 333. f. 

 White Mustard. Petiv. H. Brit. t. 45./. 10. 



In cultivated as well as waste ground, by road sides, &c. 



Annual. June. 



Root tapering, small. Stem rough like the last, but with more 

 slender reflexed hairs. Leaves bright green, almost all lyrate, 

 toothed, roughish. Fl. numerous, yellow. Calyx- leavcslmear, 

 green, horizontal. Pods spreading, on nearly horizontal stalks, 

 short, two-edged, very tumid from the prominent seeds, rough 



. with numerous, minute, reflexed bristles, interspersed with se- 

 veral larger, more spreading, or upright ones ; beak longer than 

 the pod, bristly, but more sparingly, curved upwards, sword- 

 shaped, striated, terminated by the short, compressed style and 



■ cloven stigma. Seeds rather few, large, pale yellowish brown, 

 well known as a delicate kind of Mustard. The late Mr. G. Don 

 observed them occasionally to assume a blackish hue. 



The young herb is used in salads, for which purpose chiefly it is 

 cultivated. 



3. S. nigra. Common Mu.stard. 



Pods quadrangular, smooth, slightly beaked, close-pressed 

 to the stalk. Lower leaves lyrate ; upper linear-lanceo- 

 late, entire, smooth. 



S. nigra. Linn. Sp. PL 933. Willd. v. 3. 555. H. Br. 722. EngL 

 BoL V. 14. L 969. Woodv. t. 151. MarL RusL /. 51. Hook. 

 : Scot. 204. DeCand. Syst. v. 2. 608. FL Dnn. t. 1 582. 



