TETRAD YXAMIA SILIQUOSA 381 



2. L. riRGixicux, L. Leaves linear-lanceolate, inciscd-scrrate ; sta- 

 mens often 2 ; silicles orbicular, emarginate ; cotyledons accumbent. 

 Beck, Bot. p. 27. 

 Virginian Lepidilw. Vulgo — Wild Pepper-grass. 



Root annual. Stem 9 to 15 inches high, subteretc, minutely roughish- pubescent, 

 corymbosely branched above. Leaves 1 to 2 inches long, aud 1 eighth to half an 

 inch wide, subsessile, or narrowed to a short petiole at base, smoothish, the lower 

 ones often pinnatifidly incised, the upper ones sometimes entire. Racemes cy- 

 Jindric; pedicels numerous, 1 fourth to 1 third of an inch long. Petals white, very 

 small. Silicles keeled, with a narrow wing at apex, emarginate ; style very 

 short. Seeds compressed, obliquely ovate, margined, with one groove on each side 

 (or cotyledons accumbent— "incumbent," DC), pale reddish brown. 



Hab. Fields, and roadsides: common. Fl. May— September. Fr. July— Octo. 



Obs. The flowers of this are often Diandrous, by abortion. One or two addi* 

 tional species (probably introduced) are enumerated in the U. States. 



Order 2. Siliquosa. 



a. Silique longitudinally dehiscent ; septum linear. 



315. BAR3AREA. Br. Mat. Gen. 559. 

 [So named, from the plant having been dedicated to St. Barbara.'] 



Calyx suboqual at base, erect. Petals unguiculate ; border entire. 

 Filaments without teeth- Silique 4-angled, and somewhat ancipital ; 

 valves concave, keeled. Seeds in a single series ; cotyledons accum- 

 bent. 



1. B. vulgaris, Br. Lower leaves lyrate, the terminal lobe rounded ; 

 upper leaves obovate, sinuate-dentate, often pinnatifid at base; siliques 

 acuminate. UecA:, Bot. p. 29. 



Erysimum Barbarea. mild. Sp. 3. p. 509. Pers. Sim. 2. ft. 199. 

 Muhl. Calal.p.dl. r 



Comxox Barbarea. Vxilgb— Scurvy-grass. Yellow Rocket. 



GW//« v -Velard de Ste. Barbe. Germanice.-Die Winter-kresse. 



Root perennial. Stem 1 to 2 feet high, sulcate-striate, smooth, branched above. 

 r"" 1 \° 3or 4 inches ,on S> and half an inch to an inch and half wide, smooth; 

 the radical ones petiolate, pinnate, with the lower segments oblone, and the term- 

 innl one large, orbicular, ovate, or oval, repand-dentate, the stem-Uaves pinnatifid 

 at base, on short petioles; the upper and branc h leaves obovate, and oval, nar- 

 rowed at base, sessile, deeply and coarsely sinuate-dentate. Pedicels 1 fourth of 

 an inch long. Petals yellow. Siliques about 3 fourths of an inch long, obliquely 

 erect, somewhat 4 sided, acuminate with the tapering style. • 



Hab. Moist, low grounds ; Brandywine: frequent. Fl. May. /V.July 



cur^rel™ "tTS^ ? I* *" imr ° dUCed P,ant ' bM k is » ute common al ™S 

 are no other CK in the U^. * * "" ^ " ** C ™'^ **» 



