Photo by] 



IE. Step. 



FIG. 551. HEATHER OK LING (Calluna vulgaris). 



The most conspicuous part of the flower is the rosy calyx, the corolla being quite small. The leaves are very minute 

 and like overlapping scales. They are specially adapted to resist cold. EUROPE, \v. SIBERIA, AZORES, GREENLAND, 



N. AMERICA. 



447 



