FRUITS AND SEEDS AND THEIR USES 287 



Fig. 167. — Various devices for the scattering of fruits and seeds. 

 The following are carried by the wind : the seed of a Bignonia (a) ; the 

 fruit of Ailanthus {d) ; the seed of a willow {e) ; the fruit of the avens (^) ; 

 the fruits of the basswood (/), whose peduncle is united for a distance with 

 a bract-like leaf; the fruits of the dandelion (/) ; and maple fruits (»). 

 The fruits of the Spanish needles (c), of Hedysarum (b,j), and of the cockle- 

 bur (to) attach themselves to passing animals.' The sepals of Salvia glu- 

 linosa, surrounding the ripe fruits (/), bear sticky glandular hairs which 

 adhere to objects that they touch, as shown at k. When the germander 

 plant (b) is shaken, the fruits are discharged by a mechanism composed of 

 the sepals and the elastic pedicel. The fruits of Mgilops (0) and of Crupina 

 (p) creep by means of the hygroscopic movements of hairs and other parts. 

 After Kerner. 



