420 BICKNELL: FERNS AND FLOWERING PLANTS OF NANTUCKET 
VACCINIUM VACILLANS Kalm. 
Common among the low woody growth of hillsides and dry 
open places. In full flower June 5, 1911; still some flowers June 
29, 1908, June 30, 1910; ripe fruit July 11, 1912. 
The common form has the leaves either entire or serrulate, 
and nearly or quite glabrous, varying from pale and glaucous to 
merely glaucescent, the branches often slightly puberulent. A 
taller form with larger and somewhat pubescent, pointed leaves, 
and soft pubescent branchlets, may be a cross with Vaccinium 
corymbosum. It was found only in a bushy tract on the plains 
west of the railroad at about the third milestone. 
VACCINIUM ANGUSTIFOLIUM Ait. 
V. pennsylvanicum Lam., not Mill. 
Abundant in dry open places and among open growths of low 
shrubbery. In full flower May 30, 1909, June 3, 1911; not many 
flowers left June 7, 1908; first ripe fruit June 7, 1912. 
Diminutive forms, sometimes only a few inches high, have very 
small and crowded oblong-lanceolate leaves narrowly tapering to 
the base and the very acute apex. Other forms have larger oval 
or elliptic less pointed leaves. The Nantucket plant seems to be 
never strictly glabrous, the branchlets and the midvein of the leaf, 
at least on its upper side, showing more or less pubescence. 
Growing with the common form near Tom Never’s Head and 
west of the railroad at about the third milestone occurs var. 
nigrum Wood, having dark green shining leaves and large black 
fruit either wholly without glaucescence or with the bloom so faint 
as to be barely perceptible. 
* Vaccinium Brittonii Porter, sp. nov. 
Vaccinium nigrum Britton, Man. 710. 1901. Not V. nigrum 
(Wood) Britton, Mem. Torrey Club 5: 252. 1894. 
Low, 1-4 dm. high, from stout horizontal or ascending root- 
stocks; stems clustered, the branches often fastigiate; bark pale 
green or violaceous, the shoots white glaucous; branchlets usually 
with traces of puberulence; leaves numerous, often crowded, 
oval to elliptic, obtuse or pointed, 1.5~3 cm. long, 7-12 mm. wide, 
or larger on the season’s shoots, pale bluish green and glaucous 
