214 
corymbosum, but is always more spreading, as are also its leaves. 
The fruit clusters are shorter and more open than in V. corym- 
bosum. Its berries are large, black and almost always shining, 
and ‘luscious. The occasional dull-berried forms may be hy- 
brids. The hairs are not straight as in all the others of the 
region, but are inclined to be fine, soft, and more or less curly 
or at least crooked. This pubescence is well denominated as 
“down.” 
Number 8 has the leaves hairy beneath, the margins entire, 
but softly hairy. Number 8 A has the leaves markedly pale 
beneath and appearing as though glaucous, although somewhat 
hairy, with the margins entire and softly hairy. The berry is 
dull-black. Number 8 B is low and slender. The leaves are 
small, narrow and thin, as in var. nigrum, hairy on the midrib 
beneath, with the margin entire. ‘The branches of the inflores- 
cence, calyx, etc., are bright-red. Number 8 C is similar, but 
very tall. Its twigs, petioles, and lower leaf surface are very 
hairy, and its leaves are markedly shiny on the upper surface. 
Number 9 is V. atrococcum, but with the leaves hairy on both 
surfaces and the margin entire. Number 10 is V. atrococcum, 
but with the leaf margin bristly-serrate. Number 11 is similar, 
but with the leaves very hairy beneath, shining above, and with 
bristly-serrate margin. 
V. ANGUSTIFOLIUM Ait. (V. pennsyluanicum Lam.). Both the 
typical plant and its numerous varieties are very common and 
abundant. The type has its twigs green and finely warty but 
glabrous, the leaves thickish and firm, lanceolate to oblong, 
acute at the summit and less so at the base, smooth and shining 
on both surfaces, the margin sharply serrate with bristle-pointed 
teeth, the berry large, blue, and sweet. The shrub is usually 
low and spreading, but presents many distinct forms as to habit. 
Of each of the forms described below there is a black-berried 
variety. 
Number 12 is the typical plant just described. Number 13 
differs in having the young twigs, petioles, and lower leaf sur- 
faces hairy, the hairs being straight and spreading. Number 
14 differs from the latter only in having the leaf margin entire. 
This may be a form of or a hybrid with V. canadense. 
