474 VACCINIACEAE 
6. V. atrococcum, (A. Gray) Heller. Brack Buiueperry. Differs 
from V. corymbosum in the absence of bloom on the berry, in the down on 
the under side of the leaf, which is dense, and in the form of the flower, 
which is smaller and more round. Leaf borders entire. Swamps and wet 
woods, throughout our area. May-June. 
7. V. simulatum, Small. SeRRULATE-LEAVED BLUEBERRY. Shrub, re- 
sembling the last two. Leaves elliptic to oblong-lance-shaped, acute at 
apex and usually at base, smooth, bright green above, somewhat downy 
beneath at least on the veins; margins notched with fine teeth. Berry 
with a bloom. New York and southward. 
8. V. pennsylvanicum, Lam. (Figs. 2 and 3, pl. 116.) Low-susn 
BLUEBERRY. A nearly prostrate shrub, with stems $ to 2 ft. long, found 
in dry rocky soil, mostly on high hills. Stem branching, the newer 
shoots light green, warty, the older stems reddish. Leaves elliptic-lance- 
shaped, green and smooth on both sides, the apex tapering to a hard tip. 
Flower bell-shaped, white, in few flowered, short clusters. Calyx 5-toothed. 
Fruit a round berry 3/8 in. in diameter, blue with a thick white bloom. 
The sweetest and earliest of the blueberries. May-June, Fruit ripe 
June-July. 
9. V. canadense, Richards. CANapiAN BLUEBERRY. Similar to last, 
but leaves somewhat broader and somewhat downy. The fruit ripens later 
and is the latest of the blueberries to appear in market. May-June. 
Fruit ripe July-Sept. 
10. V. nigrum, Britton. Low Brack Biueserry. Similar to No. 
8, often growing with it, but has a broader leaf, which is commonly more 
rounded at base, and rounder bell than the latter and the black berry has 
no bloom on its surface. 
11. V. vacillans, Kalm. (Fig. 1, pl. 116.) Biurz Huckieserry. A 
branching shrub, 4 to 4 ft. high, with oval leaves or with leaves some- 
times broadest toward apex, 1 to 24 in. long. Margins entire or finely 
serrated, sharp points at apex, terminated by a sharp bristle. Flowers 
pink or greenish-white, bells 4 in. long, cylindric, constricted at throat. 
Fruit a round blue berry with a bloom, A fine fruit. Dry, sandy soil. 
May-June. Fruit ripe July to Sept. 
3. CHIOGENES, Salisb. 
Our species a trailing evergreen, with delicate stem, scarcely woody, 
with small roundish oval, alternate leaves. Calyx adherent to the ovary 
except at the summit, 4-lobed; corolla bell-shaped rather broad at the 
throat. Fruit a white berry with many seeds. 
C. hispidula, L. (Fig. 4, pl. 117.) Creerrna Snowserry. Leaves 
1/4 to 1/3 in. long; flowers small, at the leaf-axils. Found in shady 
woods and on mountains, throughout our area. May-June. 
4. OXYCOCCUS, Hill 
Our species delicate creepers found in bogs. Stem extremely slender; 
leaves small, alternate, oval or ovate, with margins rolled back, Calyx 
adherent to the ovary to its summit, its border 4- or 5-cleft. Corolla 
deeply cleft, nearly divided into 4 petals, these turning outward and 
