THE FLOWER AND THE BEE 



The flowers of the alder are in catkins or anients. A cat- 

 kin is a cylindrical flower-cluster composed of many small, 



Fig. 4. Common Alder. AInus incana 

 A, fertile catkins ; B, starainate catkins ; a wind-pollinated shrub 



nearly sessile flowers, and numerous })rotecting scales. The 

 stamens and pistils are always in different catkins. In a 



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