6. CRUCIFER.E. 19 



9. HESPERIS. Pod quadrangular or subcom pressed ; valves 

 keeled, somewhat 3-veined. Stigma of 2 closely converging 

 erect elliptical obtuse lobes. Seeds in a single row. 



10. SISYMBRIUM. Pod terete or rarely tetragonal; valves 

 convex, with 3 longitudinal veins. Stigma entire. Seeds 

 in a single row, smooth ; seed-stalk filiform. S. thalianum 

 has a tetragonal pod and valves with 1 strong conspicuous 

 rib. 



11. ALLIARIA. Pod terete; valves convex, with 3 longitu- 

 dinal veins, the middle one prominent and strong, the 2 

 lateral slender and branching. Stigma entire. Seeds in a 

 single row, striated; seed-stalk flattened, winged. 



12. ERYSIMUM. Pod tetragonal ; valves prominently keeled, 

 with 1 longitudinal vein. Stigma obtuse, entire or slightly 

 emarginate. Seeds in a single row ; seed-stalk filiform. 



Tr. III. BRAS SICE JE. Cotyledons conduplicate longitudi- 

 nally folded in the middle ; radicle dorsal, within the fold. 



13. BRASSICA. Cal. erect. Pod terete or angular. Seeds glo- 

 bose, in a single row. 



14. SINAPIS. Cal. patent. Pod terete or angular. Seeds in 

 a single row. 



15. DIPLOTAXIS. Cal. patent. Pod compressed. Seeds 

 oval or oblong, in 2 rows. 



Suborder II. LATISEPTVE. 



Pouch (silicic) short, opening with two valves : dissepiment in 

 its broadest diameter. 



Tr. IV. ALYSSINEJE. Cotyledons accumbent. 



16. ALYSSUM. Pouch roundish or oval, compressed. Seeds 

 2 4 in each cell. Filaments toothed or the shorter ones 

 with a gland or subulate process on each side at the base. 



17. KONIGA. Pouch oval, compressed. Seeds 1 2 in each 

 cell. Filaments simple. Hypogynous glands 8. Carpo- 

 phorum 0. 



18. DRABA. Pouch oval or oblong, slightly convex. Seeds 

 many in each cell, not margined, in two rows. Filaments 

 simple. 



19. COCHLEARIA. Pouch globose ; valves very convex, dorsal 

 vein prominent. Seeds many. Filaments simple. 



20. ARMORACIA. Pouch elliptical or globose ; valves very 

 convex, no vein. Seeds many. Filaments simple. 



