SEED-BEARING PLANTS 



48s 



Fig. 369. — Toad-flax (Linaria vulgaris). 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 ip), rubbed off from anthers onto the dorsal hairs of the thorax, 

 during successive visits. 



