606 VIOLACE^E. 



BARBAREA, R. Br. 



Silique long, linear, terete or 4-sided, the valves keeled. Seeds in a single 

 row in eacli cell, marginless. Cotyledon thick, aecumbent. — Biennial or 

 perennial herbs, with pinnatifid clasping leaves, and yellow flowers. 



B. prsecox, R. Br. (Scurvy Grass ) Lower leaves lyrate, with the 

 terminal lobe obovate, the upper ones pinnatifid, with oblong-linear lobes ; 

 silique compressed, barely thicker than its pedicel ; style short and thick. — 

 Waste places, North Carolina. Introduced. 



ERYSIMUM, L. 



Silique linear, 4-angular, the valves keeled. Seeds in a single row in each 

 cell, oblong, marginless. Cotyledon flat, incumbent. — Chiefly biennial 

 herbs, with narrow leaves, and yellow flowers. 



E. cheiranthoides, L. (Wormseed Mustard.) Stem erect, branch- 

 ing above, closely pubescent ; leaves thin, lanceolate, acute, entire or slightly 

 toothed, roughish; flowers small; silique ascending, rather longer than the 

 slender pedicel, the angles rounded. — North Carolina (Curtis). July. — 

 Stem 1° - 2° high. Silique 8" - 10" long. 



CAKILE, Tourn. 



C. maritima, Scop., var. Cubensis. Stem and branches erect ; 

 leaves linear, obtuse, dentate-serrate, tapering into a petiole ; loment obo- 

 vate. (C. Americana, var. Cubensis, DC.) — Keys of South Florida. 



Order CAPPABIDACE.E. 

 POLANISIA, Raf. 



P. trachysperma, Torr. & Gray? Glandular-pubescent ; leaflets and 

 bracts ovate or oblong ; raceme loosely many-flowered ; petals bright-yellow 

 (Y long), the obovate notched limb as long as the capillary claw; stamens 

 20-30, 2-3 times as long as the petals ; style longer than the ovary ; capsule 

 stipitate. —Roadsides, Dadeville, Alabama (Charles Mohr). 



Order VIOLACE^E. 



VIOLA, Tourn. 



V. rostrata, Pursh. Stems numerous, ascending (3'- 6' long); leaves 

 cordate, serrulate ; stipules large, fringed ; spur straight, slender, longer than 

 the pale-purple beardless petals ; stigma beakless. — Mountains of Georgia 

 and Alabama, and northward. 



