6. CRUCIFEK.E. 25 



21. HUTCHINSIA. Pouch elliptic, entire; valves boat-shaped, 

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

 equal. Filaments simple. Cotyledons rarely incumbent. 



!22. TEKSDALIA. Pouch roundish, notched ; valves boat- 

 shaped, their back keeled below narrowly winged above. 

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

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



33. TBEBIS. 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 incumbent. 



24. LEPIDIUM. Pouch roundish or oblong, entire or notched ; 

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

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



2o. BURSA. Pouch triangular-obcordate ; valves compressed, 

 keeled but not winged. Seeds many. 



Tr. VII. SUBULARIEJG. 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. 



26. SUBULARIA. Pouch oval-oblong, laterally subcompressed ; 

 valves boatshaped, 



Tr. VIII. SENEBIERE&. Valves not separating. Cells 

 one-seeded. Cotyledons incumbent, long, linear,- curved 

 back above their base, as in Tr. VII. 



27. SENEBIERA. Pouch broader than Ions', somewhat kidney- 

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

 almost 2-lobed. 



Suborder IV. NUCUMENTACE^E. 



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

 absence of the septum. 



Tr. IK. ISATIDEJS. 



28, LSATIS. Pouch laterally compressed, 1-celled, 1-seeded, 

 valves keeled, eventually separating. Cotyledons incum- 

 bent. 



C 



