6. CETJCIFEE^. 21 



' * Stigma a disk or head. 



3. Nastyktium. Pod subcyKndrical ; vahes convex, vdnless. 

 Seeds irregularly in 2 rows. 



4. Baebaeea. Pod terete; valves convex mth apromnent 

 longitudinal rib. Seeds in a single ro-w. 



5. TuREiTis. Pod compressed ; valves slightly convex with 

 a prominent longitudinal rib. Seeds in 2 rows. 



6. Ab ABis. Pod compressed ; valves nearly flat with a pro- 

 minent longitudinal rib, or with numerous longitudinal 

 veins. Seeds in a singh row. 



7. Caedamini:. Pod compressed; valves fiat, veinless. Seeds 

 in 1 row ; seed-staUc simple, filiform. 



8. Dentaeia. Pod lanceolate, compressed ; valves flat, vein- 

 less. Seeds in a single row ; seed-stalk dilated, winged. 



Tr.|n. SISYMBRIBjE. Cotyledons incumbent (radicle dor- 

 sal), seed compressed. 



* Stigma of two closely converging erect ovate lobes, 



9. Hbspbbis, Pod quadrangular or subcompresaed ; valves 

 keeled, somewhat 3-veiaed. Seeds in a single row. 



** Stigma a disk with a thickened edge. 



10. SiSYMBEiUM. Pod terete or rarely 4-edged ; valves con- 

 vex, with 3 longitudinal veias. Seeds in a single row, 

 smooth ; seed-stalk filiform. — S. thalianum has a tetra- 

 gonous pod and valves with 1 strong conspicuous rib. 



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

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

 lateral slender and branching. Seeds in a single row, 

 striate ; seed-stalk fiattened, winged. 



12. Eeyshtom:. Pod 4-edged ; valves prominently keeled, with 

 1 longitudinal vein. Seeds in a single row ; seed-stalk fili- 

 form. 



Tr. in. BRASSICEM Cotyledons conduplicate (longitudi- 

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



13. Bbassica. Cal. erect. Pod terete or angular. Seeds 

 globose, in a single row. 



