THE FLOWER AND THE BEE 



guests, others are mere robbers. I should never have dreamed 

 that the pretty, nodding pink blossoms of the twinflower 

 (Linncea borealis), with its sweet vanilla-like fragrance, are in 



Fig. 3. Bladderwort. Utricularia vulgaris 

 The two-lipped yellow flowers are pollinated by syrphid flies, both in Europe and America 





our northern woodlands attractive to gnats alone. One after- 

 noon a large bed of these delicate flowers was carefully observed, 

 and eight visitors were collected. On examination they were 



18 



