424 BICKNELL: FERNS AND FLOWERING PLANTS OF NANTUCKET 
VACCINIUM CORYMBOSUM L. 
An abundant shrub, mainly of low grounds, where it mixes 
with other shrubbery or groups itself into close thickets that form 
impassable barriers about pools and swampy spots. In full 
flower May 31, 1909; no flowers left June 5, 1910; first ripe fruit 
July 4, 1912. 
* VACCINIUM ANGUSTIFOLIUM X CORYMBOSUM? 
A very distinct appearing blueberry midway in size between the 
high bush and the low bush series, having bright green serrulate 
leaves, broadened like those of V. corymbosum, with the mem- 
branous and lucid character of those of V. angustifolium, and 
further noteworthy by reason of puberulent pedicels and ciliolate 
calyx lobes. 
From 5 to 9 dm. high; leaves ovate to elliptic, acute, mostly 
4 cm. long by 2 cm. wide, the largest 5.3 X 2.7 cm., firm and mem- 
branous, ciliolate, and bristly serrulate, on both sides bright green 
and shining, strictly glabrous beneath, the upper face puberulent 
along the principal veins; branches green, verrucose, puberulent; 
inflorescence mostly compound, consisting of short racemes OF — 
corymbiform clusters along naked terminal branchlets; fruit 
large, becoming 1 cm. in diameter, depressed-globose, deep blackish 
blue with a bloom; pedicels mostly curved, about 5 mm. long; 
crisp-puberulent; calyx lobes tomentulose-ciliolate.. 
On Coatue, near Third Point, July 13, 1912, a single colony. 
Specimens deposited in the herbarium of the New York Botanical 
Garden. 
If not a hybrid I do not see how this plant is to be accounted 
for except as a hitherto unrecognized species. Its membranous 
leaves bright shining green on both surfaces keep it sharply apart 
from all of the corymbosum series and seem to place it in relation- 
ship with V. angustifolium, but in size and habit and in breadth 
of leaf it is more of a high bush blueberry, appearing, indeed, quite 
intermediate between V. angustifolium and V. corymbosum. The 
puberulence of the pedicels is a character not shared with any 
northern species of the corymbosum group, although more or less 
evident on many examples of V. angustifolium; in the latter, also, 
obscurely ciliolate calyx lobes are sometimes seen. 
* VACCINIUM AUSTRALE Small. 
V. corymbosum var. glabrum A. Gray, Man. ed. 5, 292. 1867. 
V. caesariense Mackenzie, Torreya 10: 230. 1910. 
