222 TETllADYNAMIA— SILIQUOSA. Sinapis. 



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

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

 Pet. 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. alda. White Mustard. 



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

 two-edged beak. Leaves lyrate, 



S. alba. Linn. Sp. PL 933. Willd. v. 3. 555. Fl. Br. 72 1 . Engl. 

 Bot.v. 24. f.\C)77. Curt. Lond.fasc.5.t.46. Mart. Rust. t. 70. 

 Hook. Scot. 204. DeCand. Syst.v. 2. 620. Fl. Dan. t. 1393. 



Sinapin.466. Hall. Hist. v. \. 203. 



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

 Bauh.Hist.v.2.SDS.f. 



S. album. Ger. Em. 244. f. 



S. primum genus. Fuchs. Hist.53S.f. 



S. hortense. Fuchs. Ic. 307. f. 



S. secundum, Matth. Valgr. v. 1. 515./. Comer. 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-leaves Vme^r, 

 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 one-s -, 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 Mustard. 



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. FL Br.722. EngL 

 Bot. V. 14. t. 969. TVoodv. t. 151. Mart. Rust. t.5\. Hook. 

 Scot. 204. DeCand. Sijst. v. 2. 608. FL Dan. t. 1 582. 



