MONOCOTYLEDONS AND DICOTYLEDONS 



269 



of the pollen-sacs by terminal pores, which are often pro- 

 longed into tubes (Fig. 255). 



Fig. 254. Characteristic heath plants: A, B. C. Lyonia, showing sympetalous flowers 

 and single style from the lobed syncarpous ovary; D. two forms of Ca&siope, 

 showing trailing habit, small overlapping leaves, and sympetalous flowers, but in 

 the smaller form the petals are almost distinct. — After Drude. 



Common representatives of the family are as follows : 



huckleberry (Gayhissacia), cranberry and blueberry ( Yac- 



cinium), bearberry (Arctostaphylos), trailing arbutus (Epi- 

 36 



