XIV. CEUCIFEEJi]. 



223 



Lunaria. 

 Seed, cut botb ways to show the accumbent cotyledons (mag.). 



Lunaria biennis. 



Lunaria. Seed (mag.)- 



Barharea, Diagram. 



JSrysimum. _ Barharea. 



Seed, entire, and cut both ways to show the inciimbent cotyledons. Seed, entire and cut yertically (mag.). 



Araiis. 



Seed 



cut transversely 



(mag.). 



cut transversely 

 (mag.). 



AraUs. 

 Wingocl seed, (ntire and cub vertically (mag.). 



Tetrapoma barharoefolia. 

 Transverse section of the 

 silicule, showing the four 

 placentas and the incom- 

 plete septa (mag.). 



Tetrapoma. 



Silicule with four 



valves. 



