CLASS VIII. ORDER I. 



161 



This is our common large bilberry. It differs from V. corym- 

 bosum of Pursh, ia having a glaucous fruit and some other marks 

 of less importance. As a variety it may be called glaucocarpvm. 

 The V. corymbosum of Elliott, with lanceolate leaves and awn- 

 less anthers, seems a different species. 



Vacinium disomorphum. Mx. Black Bilberry. 



Leaves oblong-oval, acute; clusters bracted with 

 scales; calyx obtuse; corolla ovate. 



Shrub about five feet high, its twigs reddish or ash colored. 

 The leaves, which hardly begin to unfold until flowering time, 

 are oval, acuminate, nearly entire, quite hairy underneath. 

 Flowers small, in very short racemes, with green or purplish 

 peduncles. Calyx segments obtuse. Corolla ovate, white with 

 a reddish cast, contracted at the mouth. Anthers included. 

 Style exserted. Berries small, polished black, crowned with the 

 erect cylindrical calyx. — Swamps. — May. 



This species resembles the preceding in its general habit, size, 

 and places of growth. Its flowers and fruit are about half the 

 size, and its calyx obtuse. In fruit the calyx becomes more 

 acute and remarkably long. I have preferred applying the name 

 of Michaux to the present species, rather than introduce new 

 names into this uncertain and variable genus. 



Vaccinium hirtellum. Ait. Hairy Whortleberry. 



Hairy ; leaves obovate oblong, entire ; racemes 

 long, bracted ; corollas angular, campanulate ; fruit 

 hispid. 



Leaves oblanceolate, or wedge shaped and acute, entire, mu- 

 cronate, ciliate, hairy, shining above, covered with resinous dots 

 underneath. Racemes long, hairy, erect. Each pedicel proceeds 

 from the axil of an oval leafet or bracte, and is furnished about 

 its middle with from one to three bracteolse. Calyx hairy with 

 half ovate segments. Corolla large, white, globular or bell- 

 shaped, remarkable for its distinct, five angled form, its segments 

 a little recurved. Anthers included. Style as long as the corolla. 

 Berry hairy, black, watery and insipid. — In the edge of Richards' 

 pond, Brookline. — June. 

 14* 



