422 BICKNELL: FERNS AND FLOWERING PLANTS OF NANTUCKET 
V. angustifolium and V. vacillans that might readily be mistaken 
for V. Brittonii. It was collected on Long Island, east of Smith- 
town, Aug. 1, 1908, a single plant growing with an abundance of 
both the others, and appearing quite intermediate between them 
except in respect of the fruit, which was very dark, having only 
the faintest glaucescence. In other respects it differs from V. 
Brittonii in larger and relatively broader leaves of thinner texture, 
which are elliptic to obovate, mostly 3-3.5 cm. long and 1.5 cm. 
wide, distinctly pointed, not obviously paler beneath, and closely 
ciliate-serrulate. 
Since this was written I have seen in the herbarium of the New 
York Botanical Garden a specimen of Vaccinium Dobbini Burnham 
from Jackson, Washington County, New York, (Am. Bot. 12: 8. 
1907). It is in all respects the same as the Long Island hybrid 
and, like the latter, was found growing with both the parent species. 
* Vaccinium atlanticum sp. nov. 
A compact, often rounded shrub, commonly 6-9 dm. high, 
often close branched and leafy from the base; branches greenish, 
verrucose-puncticulate, glabrous or minutely crisp-puberulent in 
lines, branchlets more or less pubescent when young; leaves rather 
close and numerous, small for a high bush blueberry, 3-5 cm. long, 
1-2 cm. wide, or larger on the shoots, oblong- to elliptic-lanceolate, 
gradually narrowed to base and apex, acute, often attenuate, 
ciliolate-serrulate, dark green and more or less shining above, 
paler beneath, the midvein pubescent with spreading hairs, at 
least towards the base on the lower side, rarely quite glabrous; 
flowers opening with the unfolding leaves; inflorescence of short 
racemes clustered towards the ends of the branches or lateral; 
pedicels slender; corolla broadly cylindraceous to openly urceolate, 
the widest part often above the middle or towards the throat, 
angulate, 6-8 mm. long, 4-5 mm. wide, white or pink-tinged, 
calyx lobes round to triangular and subacute; fruit dark blue, 
glaucous, becoming 9 mm. in diameter, sweet. 
Rather common on Nantucket about the borders of low thickets 
or in open low grounds. Type, flowering, Millbrook Swamp; 
May 31, 1909; fruiting, Pocomo, July 11, 1912, deposited in the 
herbarium of the New York Botanical Garden. Also collected on 
Chappaquiddick Island, Marthas V ineyard, and at Lake Ronkon- 
koma, Long Island. 
