CRUCIFER.E. 5 



Sub-Order 3. SILICULOS^E. Pouch compressed, not 3 times as 

 long as broad. 



A. Pouch dorsally compressed ; dissepiment in its broadest 

 diameter. 



Tribe 4. ALYSSINE^E. Valves flat or convex. Seeds compressed. 

 Cotyledons accumbent. 



15. COCHLEARIA. Pouch globose or elliptical; valves very convex, 

 with a prominent nerve. Seeds tuberculate. Cal. patent. 

 Fl. white. 



16. ARMORACIA. Cal. patent. Pouch nearly globose, nerveless, 

 valves swollen. 



17. DRABA. Valves flat or slightly convex; 1-nerved at the 

 base. Petals deeply cleft. Seeds numerous. Fl. white. 



Tribe 5. CAMELINE^. Valves concave, dissepiment oval or 

 oblong. Cotyledons incumbent. 



*18. CAMELINA. Pouch subovate or pyriform, with swollen 

 valves, and a prominent nerVe at the base. Fl. yellow. 



19. SUBULARIA. Pouch oval-oblong ; valves slightly swollen, 

 nerved at the base. Stigma sessile. A small submerged 

 plant. Fl. white. 



B. Pouch laterally compressed ; dissepiment in its narrowest 

 diameter. 



Tribe 6. THLASPIDE^E. Valves with narrow dissepiments, 

 keeled or winged. Cotyledons accumbent. 



*20. THLASPI. Pouch emarginate, valves winged, boat-shaped, 

 with a bordered keel. Seeds more than 2 in each cell. Pet. 

 equal, small, white. 



*21. IBERIS. Pet. unequal. Cells one-seeded, valves winged at 

 the back. Fl. white. 



22. TEESDALIA. Pet. unequal. Pouch emarginate, roundish ; 

 valves keeled ; cells two-seeded. Fl. very small, white. 



Tribe 7. LEPIDINE^E. Pouch with convex or keeled valves, 

 sometimes ventricose. Cotyledons incumbent, or accumbent in 

 Lepidium. 



23. CAPSELLA. Pouch triangular, notched, wedge-shaped at the 

 base ; valves keeled. Seeds numerous. Fl. white. 



24. LEPIDIUM. Pouch elliptical or ovate ; valves keeled ; cells 

 one-seeded. Fl. white. 



25. SEXEBIERA. Pouch broader than long, wrinkled on the back, 

 cells one-seeded. Fl. very small, white. 



