SEED-BEARING PLANTS 



485 



FIG. 369. Toad-flax (Linaria vulgar is). Abnormal flowers (pelories), 

 having five or more spurs. Normal, one-spurred buds are shown in A . 



FIG. 370. Toad- flax (Linaria vulgaris). Flowers being visited by an 

 insect for nectar. B, longitudinal section, showing the insect's proboscis 

 extended down the spur toward the nectar-gland; C, insect with a mass of 

 pollen (/>), rubbed off from anthers onto the dorsal hairs of the thorax, 

 during successive visits. 



