6. crucifekj:. 25 
21. Hutchinsia/ Foiich elliptic, entire ; values boat-shaped, 
keeled not ringed at the back. Seeds 2 in each cell. Pet. 
equal. Filaments simple. Cotyledons rarely incumbent. 
22. Teesdalia. Poach roundish, notched : valves boat- 
shaped, their back Iceeled helon- naiTovli/ irinffed ahorf. 
Seeds 2 in each cell. Pet. equal or two outer ones larger. 
Filaments >rith a little scale at the base of each within. 
23. IBE11I8. Pouch ovate or roundish, notched ; valves boat- 
shaped, winged at the back. Seeds 1 in each cell. Fi t. 
n.nequal, 2 outer ones much larger. Filaments simple. 
Coti/ledons nsiial';/ 1 iirianhent. 
24. Lepiditjm. Pouch roundish or ol )long, entire or notched ; 
valves compressed, keeled or winged at the back. Seeds 1 
in each cell. Pet. equal. Cotyledons rarely accumbent. 
25. Capsella. Pouch triangular-ol>cordate ; valves com- 
pressed, keeled but not fiw/ed. Seeds many. 
Tr. VII. SUBULARIEJ^. 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. SxJBULAEiA. Pouch oval-olilong, laterally subcompressed; 
valves boatshaped. 
Ti. VIII. COROXOPEJ:. ^'alves not separating. Cells 
one-seeded. Cotyledons incumbent, long, linear, curved 
back above their base, as in Tr. VII. 
27. CoEONOPUs. Pouch broader than long, somewhat kidney- 
shaped, entire at the end, or notched al)0\ e ai\d below and 
almost 2-lolied. 
Suborder IV. NUCrMEXTAl 'E.!-:. 
Pouch (silicle) scarcely dehiscent, often 1-ceiled owing to the 
absence of the septum. 
Tr. IX. isatidej:. 
28. IsATis. Pouch laterally compressed, 1-celled, i-seeded, 
valves keeled, eventually separating. Cotj^ledons incum 
bent. 
