BLUEBERRY, HUCKLEBERRY AND CRANBERRY 217 



This family also includes the dandelion (Taraxacum 

 officinale), iron weed {Vernonia), fleabanc and meadow white 

 tap (Erigeron), thistle (Carduus), and many others that are 

 troublesome as weeds. 



HEATH FAINIILY ( VACCINIACE.e) 



The flowers of this very interesting family are four to five 

 parted ; calyx attached to am inferior ovary, the petals united ; 



Fig. 141. — Cranberries. 



stamens eight to ten ; ovary of several chambers and developing 

 into a true berry. 



Blueberry, Huckleberry and Cranberry. — The most im- 

 portant plants of this family are the blueberries and huckleber- 

 ries {Gaylussacia) and the cranberries (Oxycoccus) (Fig. 

 141), both of which are indigenous to America. 



Cranberry-growing is a highly specialized industry which is 



