VACCINIUM 177 



c. Buds ovoid or oblong, ascending 

 or appressed 



d. Low shrubs, 0. 5-9 dm. high 



e. Twigs nearly terete, 



very hairy 2. V. myrtilloides 



e. Twigs grooved above the 



buds or angular 



f. Twigs smooth 4.V. angustifolium 



f. Twigs granular -warty 3.V. vacillans 



d. Taller shrubs, up to 4 m. high 5. V. corymbosum 



c. Buds subglobose or ovoid, 



divergent l.V. stamineum 



a. Leaves evergreen; stems trailing 



b. Leaves very small, 4-10 mm. 



long,revolute 7. V. oxycoccos 



b. Leaves larger, 6-18 mm. long, 



not re volute 8. V. macrocarpon 



1. V. stamineum L. Deerberry . Buckberry. Squaw Huckle- 

 berry. A diffusely branched shrub 3-9 dm. high, with pubescent 

 twigs; buds subglobose. Dry thickets, Florida to Louisiana, north 

 to Massachusetts, Ontario, and Missouri (Fig. 267). 



2. V. myrtilloides Michx. Canada Blueberry . (V. canadense 

 Kalm). A low shrub 2-6 dm. high; twigs nearly terete, very hairy; 

 buds ovoid or oblong, scales several. Moist soil, Newfoundland 

 and Quebec to British Columbia, south to Virginia, Ohio, Iowa, 

 Saskatchewan and Montana (Fig. 268). 



3. V. vacillans Torr. Late Low Blueberry . Low shrub, 3-9 

 dm. high; twigs glabrous, yellowish-green, distinctly warty, 

 angled; buds ovoid or oblong. Dry soil, Georgia to Missouri, north 

 to Nova Scotia, Ohio, and Iowa(Fig. 269). 



4. V. angustifolium Ait. Low Sweet Blueberry . Early Low 

 Blueberry . A low shrub to 2 dm. high; twigs smooth. Open bar- 

 rens, Labrador and Quebec to Minnesota, south to Iowa, Illinois, 

 and West Virginia (Fig. 270). 



5. V. corymbosimi L. Highbush Blueberry. Shrub up to 

 4 m. high, forming compact or open clumps; twigs angled and 



