54 



SOURCES OF NECTAR 



pollen never fails when the plant blooms, and the bees fairly revel 

 in it during its season of blossom. It comes just at the season 

 when the need of food for brood rearing is greatest, and is conse- 

 quently one of the most valuable. It is usually regarded as a 



Fig. 26. — Catkins of puasy willow. 



weed, and is especially obnoxious on the lawns. The bright 

 yellow flowers are not unattractive, and if it was as difficult to 

 grow as some of the cultivated plants, it would be much in 



