ERICACEAE. (HEATH FAMILY.) 219 



§ 4. EUVACCf NIUM. — Ovary 4 - 5-celled, with no trace of false partitions : co- 

 tolla urn-shaped or globular, 4- 5-toothed: anthers 2-awncd on the back: filaments 

 smooth : flowers axillary, solitary, or 2-3 together : berries blue or black : northern 

 alpine plants, with deciduous leaces. 



6. V. csespitostliii, Michx. (Dwarf Bilberry.) Dwarf (3'- 5' 

 high), tufted ; leaves ohovate, narrowed at the base, membranaceous, smooth 

 and shining, serrate ; flowers solitary on short peduncles ; corolla oblong, slightly 

 urn-shaped : stamens 10.— Alpine region of the White Mountains, New Hamp 

 shire ; and high northward. 



7. V. llligiiidsum, L. (Bog Bilberry.) Low and spreading (+'-8' 

 high), tufted; leaves entire, dull, obovate or oblong, pale and slightly pubes- 

 cent underneath; flowers single or 2-3 together from a scaly bud, almost 

 sessile; corolla short, urn-shaped; stamens chiefly 8.— Alpine tops of the high 

 mountains of New England and New York, and northward. (En.) 



§ 5. CYANOC6CCUS. — Ovary more or less completely \0-ccl!ed by false parti- 

 tions: corolla oblong-cylindrical or slightly urn-shaped, 5-toolhed : anthers 10, 

 awnless : filaments hairy : berries blue or black ivith a bloom (sweet) : flowers in 

 clusters or very short racemes from smly buds separate from and rather preceding 

 the leaves, on short pedicels, appearing in early spring. {Leaves deciduous in the 

 Northern species or proper Blueberries.) 



8. V. Pennsylvailicum, Lam. (Dwarf Blueberry.) Dwarf 

 (6' -15' high), smooth; leaves lanceolate or oblong, distinctly serrulate with bristle- 

 pointed teeth, smooth and shining both sides (or sometimes downy on the midnb 

 underneath); corolla short, cylindrical-bcll-shapcd. — Var. angustifolum is 

 a high mountain or boreal form, 3' -6' high, with narrower lanceolate leaves. 

 (V. angustifolium, Ait.) — Dry hills and woods ; common from Penn. far north- 

 ward. —Branches green, angled, warty. Berries abundant, large and sweet, 

 ripening early in July : the earliest blueberry or blue huckleberry in the market. 



9. V. CanatK'iise, Kalm. (Canada Blueberry.) Low (l°-2° 

 high) ; leaves oblong-lanceolate or elliptical, entire, downy both sides, as well as the 

 crowded branchlets; corolla shorter: otherwise as No. 8. —Swamps or moist 

 woods, Maine to Wisconsin, and northward. 



10. V. vacillans, Solandcr. (Low Blueberry.) Low (l°- 2£° high), 

 glabrous ; leaves obovate or oval, pale or dull, glaucous, at least underneath, minute- 

 ly ciliolatc-serrulatc or entire ; corolla between bell-shaped and cylindraceous, 

 the mouth somewhat contracted. — Dry woodlands, especially in sandy soil, 

 common from Massachusetts and Vermont to Pennsylvania. —Branches yellow- 

 ish-green. Berries ripening later than those of No. 8. 



11. V. covymbosum, L. (Common Swamp-Blufberry.) Tall 

 (5° -10° high) ; leaves ovate, oval, oblong, or elliptical-lanceolate; corolla varying 

 from turgid-ovate and cylindrical-urn-shaped to oblong-cylindrical. — Swamps 

 and low thickets, everywhere common. — This yields the common blueberry or 

 blue huckleberry at the latter part of the season. The typical form has the leaves 

 entire and more or less pubescent, at least when young, as also the branchlets. 

 The species exhibits the greatest variety of forms, - - of which the last here men- 



