CI/. XT.] TETRADYNAMIA SILIQTJOSA. 275 



Hastings, Sussex, but is not there wild. Eng. Bot. vol. xxvii. pi. 

 1935 : Cheircvnthus incanus. Eny. Fl. vol. iii. p. 205. 976. 



2. M. sinudta. Great Sea Stock. Stem herbaceous, with spread- 

 ing branches ; leaves sinuate, obtuse, downy ; those of the branches 



undivided ; pods rough, with prominent glands. The whole 



plant covered with dense starry hairs and short glandular prickles : 

 stem two feet high : flowers purple. Biennial : -flowers from May 

 to September : grows on sandy sea-shores in England : rare. Eng. 

 Bot. vol. vii. pi. 462 : Cheiranthus sinuatus. Eng. Fl. vol. iii. p. 206. 



977. 

 21. BARBARE'A. WINTER-CRESS. 



Calyx of four oblong, concave, erect, deciduous leaves. Pe- 

 tals inversely egg-shaped, undivided, their claws nearly as long 

 as the calyx. Filaments awl-shaped, erect, with a gland on 

 each side within the shorter ones. Germen oblong, four-sided. 

 Style short, cylindrical ; stigma obtuse. Pod linear, four-sided, 

 slightly compressed ; valves concave, keeled, even ; partition 

 membranous, thick-edged. Seeds egg-shaped, flattish, ar- 

 ranged alternately in one row. Name, from St. Barbara. 



334. 



1. B. vulgdris. Bitter Winter-cress. Yellow Rocket. Lower 

 leaves lyre-shaped, with the terminal lobe roundish ; upper leaves 



inversely egg-shaped, toothed. Stem about two feet high, stout, 



angular, furrowed : flowers small, bright- yellow, in corymbose 

 clusters. Bitter and sharp to the taste, used sometimes as a salad. 

 Perennial : flowers from May to August : grows on the banks of 

 ditches and rivers, and about hedges and walls : common. Eng. 

 Bot. vol. vii. pi. 443 : Erysimum Barbarea. Eng. Fl. vol. iii. p. 198. 



978. 



2. B.prcecox. Early Winter-cress. Lower leaves lyrate, upper 



deeply pinnatifid, with linear, entire segments. From one to 



two feet high : flowers yellow, very small. Biennial : flowers 

 from April to October : grows in waste places in various parts of 

 England, but is not indigenous. Eng. Bot. vol. xvi. pi. 1129 : Ery- 

 simum prcecox. Eng. Fl. vol. iii. p. 199. 979. 



22. EKY'SIMUM. TREACLE MUSTARD. 



Calyx of four oblong, concave, erect, deciduous leaves. Pe- 

 tals inversely egg-shaped, obtuse, spreading, their claws erect 

 and nearly as long as the calyx. Filaments thread-shaped, 

 erect, with a gland on each side within the shorter ones ; 

 anthers oblong. Germen oblong, four-sided ; style very short. 

 Stigma small, knobbed, notched. Pod four-sided, slender ; 

 valves concave, keeled, right-angled ; partition membranous. 

 Seeds egg-shaped, arranged in one row. Named from eryo, 

 to cure. 335. 



1. E. cheiranthoides. Treacle Mustard. Leaves lance-shaped, 

 obscurely toothed, covered wi&lbrked bristles ; pods nearly erect, 



on the horizontal stalks ; stigma neaily sessile. Stem erect, 



branched, two feet high : flowers numerous, small, yellow. The 

 seeds are used for destroying worms in children. Annual : flowers 

 in July : grows in corn-fields : frequent. Eng. Bot. vol. xiv. pi. 942. 

 Eng. FL vol. iii. p. 201. 980. 



