24 6. CETTCIFBR*. 



22. HuTCHiNSiA. Pouch elliptic, entire ; valves boatshaped, 

 keeled not winged at the back. Seeds 2 in each cell. Pet. 

 equal. Filaments simple. Cotyledons rarely incumbent. 



23. Teesdalia. Poucb: roundish, notched ; valves boat- 

 shaped, their back heeled below narrowly loinged above. 

 Seeds 2 in each cell. Pet. equal or two outer ones larger. 

 Filaments with a little scale at the base of each within. 



24. Ibbbis. Pouch ovate or roundish, notched ; valves boat- 

 shaped, winged at the back. Seeds 1 in each cell. Pet. 

 unequal, 2 outer ones much larger. Filaments simple. 



** Cotyledons usually inc umbent 



25. Lbpidium. Pouch roundish or oblong, entire or notched ; 

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

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



26. Capsblla. Pouch triangular-obcordate ; vahes com- 

 pressed, Jceeled but not winged. Seeds many. 



Tr. Vin. SUBULABIJEJE. 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. SuBULAKiA. Pouch oval-oblong, laterally subcompressed; 

 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. Sbnebieea. Pouch broader than long, somewhat kidney- 

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

 almost 2-lobed. 



Suborder IV. NUOUMENTACEJE. 



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. 



