86 



23a. Leaves linear, white beneath, their margins strongly revolute 

 (shrub 3 8 dm. high; flowers white, late spri 



lI.'Tiiiar}. \nlnmnM':i trlaurophylla. 



23b. 1 urfy beneath with rusty scales (bog shrub 



4 10 dm. high; flowers white, in 



1. ratlirrl>af. ( lianiaedaHuif calyculata. 



23c. Leaves smooth, pubescent, or resinous beneath, but not scurfy 

 nor white - 



24a, Low shrubs 10 15 cm. high, erect from a creeping root- 

 stock; leaves with the taste of wintergreen (flowers white or 

 pink, summer) Wintergreen. (.aultheria procnmbens. 



24b. Bushy shrubs 3 8 dm. high; leaves dotted beneath with 

 yellowish resinous dots; ovary 10-celled (flowers greenish- 

 pink, spring) Huckleberry, da^lu^acia baccate, 



24c. Shrubs 1 dm. to 3 m. high; leaves not resinous-dotted be- 

 neath; ovary 5-celled (flowers white or greenish-pink, spring 

 or early summer) - - 



25a. Corolla bell-shape, the stamens projecting beyond it (5 15 dm. 



high) Deerberry, Vacrininm stain inenm. 



25b. Corolla cylindrical or urn-shape, the stamens not projecting 



26. 



26a, Filaments hairy (Blueberry) 27. 

 26b. Filaments glabrous (Bilberry) I 



27a, Low bushy shrubs, usually less than 5 dm. and never more than 



1 m. high 28. 

 Tall erect shrubs. 14 m. high 31. 



2Sa, Foliage pubescent Blueberry, Yaecininm ranadeii*'. 



28b. Foliage glabrous 29. 

 29a, Leaves pale-green and glaucous, entire or nearly so 



Blaeberry. Taceininm racillans 

 29b. Leaves bright-green, distinctly serrulate 30. 



30a. Fruit blue Blueberry, TaeeiniuB pennsylTanieura. 



30b. Fruit black 



Blueberry, Taeeinhm peimsylvai! Irani rmr. nisrum. 



31a, Leaves downy beneath; fruit black'- 



BlneberrT. TaecinraH atroeoeeum. 

 31b. Leaves smooth or minutely pubescent beneath; fruit blue 



Blueberry, Taeendn eoryvbosu. 



32a, Full-grown leaves less than 2.5 cm. long; low much- 

 branched shrubs, mostly less than 5 dm. high 33. 



32b. Full-grown leaves more than 2.5 cm. long; shrubs usually 

 a meter high or more 34. 



33a, Leaves entire; petals usually 4. 



Bilberry. Taeeiniun vli^iaosu. 

 S3b. Leaves finely serrulate; petals 5 



Bilberry. Taeeiun eaespftosvm. 



