TETRADYNAMIA SILIQUOSA. 



141 



THLASPI. 



Silicula emargina- 

 ta, obcordata, poly- 



G 



EN. 



P 



L. 



1078. 



sperm a 



Valvulis na- 



vicularibiis, margina 

 to-carinatis. 



Pod e margin ate, 

 obcordate, many seed- 



ed. 



Valves boat sha 



pedj keeled. 



B 



URSA PASTORIS. 



T. hirsiitum 



? 



sill 



culis deltoideo-obcor 



datis 



foliis radicali- 



Hirsute; pods del 



toid, obcordate 



^ 



5 



root 



bus pinnatifidis. 



leaves pinnatifid. 



m long racemes. 



Sp. pL 3. p. 447. WaJt. p. 173. Pursh 2. p, 435. Nutt- 2. p. 6A. 



Root fusiform, annual. Radical Leaves long, lanceolate, deeply pin- 

 fiatifid, with a long naked base. Stem Leaves lanceolate, denticulate, sa- 

 gittate and amplexicaule at base, all hairy but scarcely hirsute. Flowers 



Calyx 4-leaved, leaflets lanceolate,deciduons, membra- 

 naceous along the margins. Petals obovate, white, longer than the calyx. 

 Stamens 6, about as long as the calyx, two a little shorter than the others. 

 Germ superior, obovate. Style very short. Stigvia glandular. Pod 

 triangular, deeply emarginate along the upper line, not distinctly keeled^ 

 2 celled. Seeds many in each cell, oval. 



Grows in cuhivated land. An exotic now completely naturalized. 



Flowers February — May. 



SILIQ UO SA . 



DENT ARIA. 



Siliqua elastice dis- 



sili 



ens. 



nervibus, 

 Xyi^sejnmentum 



Valvulis e 



revolutis. 



fungosum. 



sub 



Stigma 



Gen. 



L: 



1087. 





Pofl? opening elasti 



all> 



tition 

 gous. 



Valves without 

 revolute. Par- 

 somewhat fun- 



Siisi'ma emar- 



