194 



FRUITS 



An achene is a one-celled, one-seeded, dry, indehiscent 

 fruit, as in the sunflower, hemp and anemone. 



6 



FIG. 123. Nuts. 1, Hickory (Hicoria alba); 2, acorns of Quercus sp.; 

 3, beaked hazelnut (Corylus rostrata); 4, hazelnut (Corylus americana); 

 5. chestnut (Castanea dentata); 6, butternut (Juglans cinerea). 



A utricle is a one-celled, one-seeded, dry, indehiscent fruit 

 with a thin inflated pericarp. 



A caryopsis or grain is a one-celled, one-seeded fruit in 

 which the seed is grown fast to the pericarp, as in wheat. 



