<= = 
‘ORD. XXII. Siliquosee. 403 
SINAPIS NIGRA. COMMON BLACK MUSTARD. 
——————— 
SYNONYMA. Sinapi. Pharm. Lond. & Edinb. Sinapi rapi 
folio. Bauh. Pin. p. 99. Sinapi sativum alterum. Gerard. 
Emac. p. 244. Sinapi sativum rapi folio. Park. Theat. p. 831. 
Sinapi sativum secundum, Raii Hist. p. 803. Synop. p. 295.. 
Sinapi siliquis tetragonis glabris. Hall. Stirp. Helv. n. 465. 
Sinapis nigra. Huds. Flor, Ang. p. 297. Lightf. Flor. Scot. p. 
361. Withering Bot. Arrang. p.713. 
Class Tetradynamia. Ord. Siliquosa. Lin. Gen. Plant. 821. 
' £ss, Gen. Ch. Cal. paténs. Cor. ungues recti. Glandula inter 
» stamina breviora et pistillum, interque longiora et 0 aia 
Sp. Ch siliquis glabris racemo appressis. 
THE root is annual: the stem erect, smooth towards the top, 
channelled at thé bottom, about three feet in height, divided and 
subdivided in numerous distant spreading branches: the leaves are 
variously shaped: those near the root are large, irregularly heart- 
shaped, and pinnatifid or lobed at the base; those on the upper 
branches are narrow, and more entire: the flowers are yellow, and 
terminate the branches in close spikes: the calyx consists of four 
expanding strap-shaped deciduous leaves: the corolla is composed 
of four petals, which at their extremities are roundish, flat, spread- 
ing, and stand in opposite directions upon upright narrow claws: 
the filaments are six, four long and two short; they are all erect, 
tapering, and furnished with simple anther: the germen is cylin- 
drical, terminated by «a style, which is crowned with a knobbed 
‘stigma: a small gland is placed’ between each of the short filaments 
and the germen, and between each pair of the long filaments and 
the calyx, the séed vessels. or pods stand nearly parallel with the 
