DISTRIBUTION OF SEEDS. 



159 



in how many puffs they can blow off all the feathery 

 fruits? (Fig. 138 #.) Try one now. First notice the 

 little fruits or inferior achenes (cypselas) with their 

 feathery tails (Fig. 138 b, e), and then start them on 

 their journey through the air, and watch how admirably 



Fig. 138. Dandelion (Leontodon} ; a, head of seeds ; b, head with all 

 seeds removed but one, showing reflexed involucre, pitted receptacle 

 and one fruit with pappus ; , one fruit with pappus magnified ; 

 c, receptacle with one floret left upon it ; d, floret magnified, showing 

 ovary'at base, the hairy calyx which becomes the pappus, the tubular 

 corolla with expanded limb (ligulate), the anthers of the stamens 

 being close around the style of the pistil, of which the stigma at 

 the top is notched. 



the plant has produced that which will bring about 

 what is desired, that its ripe seeds should be scattered 



