CHAPTER XX. 



Tab. XXXTV. — the capsule, pistil, stamina, nigella, 

 plumule, and radicle. 



Fig. 1. The capsule or seed-vessel of the poppy : (papaver 

 somnifeniin :) it is divided to exhibit its internal structure. 



Fig. 2. Is an instance of an erect flower, the agave Ame- 

 ricana ; in which the pistil is shorter than the stamina, a, 

 the pistil ; b, the stigma ; c, the stamina ; d, the antherae. 



Fig. 3. A flower of the crown-imperial. The relative length 

 of the parts is now inverted, a, the pistil ; 6, the stamina. 



Fig. 4. A blossom of the nigella. 



Fig. 5. A grain of barley, showing the plumule and radiclt 

 growing fnym it. 



