CRUCIFERjE, .44 CAMELINA. 



Tribe 2, NOTORHIZE.E. 



Cotyledons incumbent ( o|| ). Railidc dorsal. Seeds ovate, never margined. 

 15. ERl'SYMUM. 



Silique columnar, 4 cornered 5 stigma capitate; seeds in a 

 single row ; cotyledons oblong, calyx closed. 



Gr. £gv4», to cure ; on account of its salutary effects in medicine. 



E. CHEIRANTHOI'DF.S. 



Pubescence minute, appressed ; leaves lanceolate, denticulate or entire; sili- 

 que erect, twice as long as the pedicels ; stioina small. By streams and in 

 wet grounds. Stem often branched, 1 or '2 feet liigh. Flowers small, yellow. 

 Siliques an mch in length. July, Aug. Ann. 



1 G . S Y S 1' M B R I U M . 

 Siliques cylindrical ; cotyledons incumbent, sometimes ob- 

 lique, flat; calyx mostly spreading, equal at the base. 



The ancient Greek name of some unknown plant. Stigmas 2, somewhat 

 distinct or connate. 



1. S. OFFICINA'LE. Erysimum. L. 



Siliques close pressed to the rachis of the spike. Leaves runcinate. In 

 cultivated fields, among rubbish, »fcc. Stem 18 inches high, round, branched, 

 more or less hairy. Leaves lyrate, toothed, the lower segments lanceolate, 

 and placed at right angles to the petiole or pointing backwards; upper leaves 

 in 3 narrow segments, placed at right angles. Flowers small, yellow, termi- 

 nating the spike, which becomes long and environed with the appressed, 

 sessile pods. June,— Oct. Ann. Medicinal. Hedge Mustard. 



2. S. Sophi'a. 



Leaves bipinnate; segments oblong-linear, incised ; petals shorter than ca- 

 lyx ; calijx half as long as pedicel. In sandy fields. Stem 2 feet high. Flow- 

 ers yellow. April. Ann. Flax-icecd. 



3. S. THALIA'NA. Gray. Arabis thaliana. L. 



Leaucs hairy, subdentate ; radical ones petiolate, oblong; stein branched, 

 hairy at the base ; siliques ascending, twice as long as the pedicels ; calyx 

 much shorter than the pedicels. Rocks and dry hills. Stem G inches high, 

 erect, with slender branches. Flowers very small. Siliques slender, | incii 

 in length. April, May. Ann. Mouse-car Wall Cress. 



17. CAM EL I'M A. 



Silicle obovate, or suhglobose, with vcntricose valves and 

 many-seeded cells; style filiform; cotyledons incumbent. 



A conU-action Cot chajnne-l ilium, dwarf flax. Style rather long. Stamens 

 not toothed. Seeds oblong, striate, not membrane-winged. 



C. SATi'VA. 



S«7tc/e obovate, pyriform, margined, tipped with the pointed style; leaves 

 subentire, lanceolate, sagittate. Grows in fields. Stem straight, erect, Id 



