CRUCIFERiE. 39 



Tribe 2. — Cotyledons flat, radicle applied to back of one of them 

 (radicle dorsal). 



STKOPSIS OF THE GENEKA. 



Hespeeis. — Leaves simple, toothed. Lobes of the stigma converging. Pod 



nearly cylindrical. 

 Eetsimtjm. — Leaves entu'e, sinuate or toothed. Pod quadrangular. 

 SiSTMBEitTM. — Leaves entire, or pinnatifid or pinnate. Stigma entire. Pod 



cylindrical. 



HESPERIS;,Z/^/^. — Perennial plants, with round, leafy, erect stems 

 and simple leaves. Flowers corymbose. Sepals erect, tlie lateral 

 pair gibbous at the base. Stigma %-lobed, lobes oblong, connivent : 

 style short conical. Pod linear-cylindrical, dorsally compressed, 

 tapering at the base and apex ; valves convex, with a dorsal nerve 

 (with three faint nerves, Cos. et Ger.) , Seeds in one row, oblong 

 or angular, often winged at the apex (not bordered, Sm.). 



H. matronalis, Lin. Dame's Violet (Lady^s Violet) . — e.b.731. 



L.B.S. 112. 



Found in fourteen counties, but not " fairly established." — See Cy- 

 bele, vol. i. p. 157. About Paris it is only subspontaneous. In 

 the South of France its nativity is unquestioned. 

 Stems erect, rigid, hairy, leafy, simple or branched near the 

 summit. Boot-leaves oblong, tapering, and petiolate; stem- 

 Inavcs ovate-lanceolate, acuminate (a tapering point), toothed, 

 rough. Flowers large, in panicled clusters, lilac or white. Petals 

 obcordate, with a minute apiculus (a short point) . Pods ascend- 

 ing, slightly torulose, 8-10 times as long as the pedicels. 



Said to grow in shady places and in mountainous woods. 

 Scarc^y naturalizedj^JEiigland. In the environs of Paris it is 

 stated to be only subspontaneous. Bien ^ orjer^; May, June. 



Erysimum, Lin. — Annual or biennial plants, with entire, si- 

 nuate, or toothed leaves, and yeUow flowers. Sepals erect, equal, 

 or the lateral ones slightly enlarged at the base. Petals equal, 

 entire. Stigma entire or notched ; style cylmdrical. Pods linear, 

 four-angled, with convex keeled valves, and a strong dorsal nerve. 

 Seeds ovate-oblong, in one row. 



E. cheiranthoides, Lin. Treacle Mustard. — e.b. 942. l.b.s. 

 105. 



A. 4. C. 10. Lat. 50-53°. Alt. 0-100 yds., South of England. 

 Tern. 51-48°. 

 Stem round, erect, rigid, with shallow fm'rows and sharp ridges, 

 bristly, leafy. Leaves narrow-oblong, tapering at both ends, en- 



