x8 
Colorado Agricultural Collegh 
Fig-. 7. Longitudinal section of an 
achene (Sunflower) showing the seed 
free from the enclosing pericarp. 
Fig. 8. Cross-section of a nutlet 
(Motherwort) showing two flat sides 
(areas of cleavage where fruit split 
into nutlets) and relation of closely 
united pericarp and testa. 
showing the ioose, bladder-like calyx enclos- 
ing the pericarp which is not adherent to the 
testa. 
testa. 
