6. CEUcrFEKa;. 23 



** Cotyledons usually incumbent. 



25. Lepidium. Poucli roimdisli or oUong, entire or notched ; 

 valves compressed, keeled or winged at the back. Seeds 1 

 in each cell. Pet. equal. Cotyledons rarely accumhent. 



26. Capsblla. Pouch triangular-ohcordate ; valves com- 

 pressed, keeled hut not winged. Seeds many. 



Tr. Vni. SUBULARIEM. Pouch with a rather broad dis- 

 sepiment. Cells many-seeded. Cotyledons incumbent, 

 long, linear, curved back above their base, thus appearing 

 like 4 in transverse section. 



27. SuBULABiA. Pouch oval-oblong, laterally subeompressed; 

 valves boatshaped. 



Tr. IX. SENEBIEREJE. Valves not separating. Cells one- 

 seeded. Cotyledons incumbent, long, linear, curved back 

 above their base, as in Tr. VIII. 



28. Sbnebiera. Pouch broader than long, somewhat kidney- 

 shaped, entire at the end, or notched above and below and 

 almost 2-lobed. 



Suborder IV. NUCUMBNTACEiE. 



Pouch (silicle) scarcely dehiscent, often 1-celled owing to the 

 absence of the septum. 



Tr. X. ISATIDE^. 



29. IsATis. Pouch laterally compressed, 1-celled, 1-seeded ; 

 valves keeled, eventually separating. Cotyledons incum- 

 bent. 



Suborder V. LOMENTACE^. 



Silicle or silique dividing transversely into 1-seeded cells ; the 

 true silique often barren, aU the seeds being in the heak. 



Tr. XI. CAXILINEM. Silicle 2-jointed. 



30. Cakile. Silicle angular, of two 1-seeded indehiscent 

 joints, upper joint deciduous with an erect seed, lower per- 

 sistent seedless or with a pendent seed. 



31. Ceambb. Silicle 2-jointed, upper joint globose with 1 

 seed pendent from a long curved seed-stalk springing from 

 the bottom of the cell, lower joint barren stalklike. 



Tr. XII. EAPKANEM. Silique linear or oblong, terete or 

 moniliform. 



