Burke: Vaccinium uliginosum vs. Vaccinium corymbosum

	Vaccinium uliginosum	Vaccinium corymbosum
	bog bilberry, bog blueberry	high-bush blueberry
Habit	Deciduous, branching shrub, the stems 2-6 dm. tall, not angled, the young bark yellowish-green, becoming reddish-gray with age.	Deciduous shrubs, the stems 10-50 dm. tall; twigs green, angular to terete, hairy in lines.
Leaves	Leaves alternate, entire, oblanceolate 1-3 cm. long, glabrous or finely puberulent.	Leaves alternate, the blades dark green, ovate to narrowly elliptic, 15-70 mm. long and 10-25 mm. wide, entire to sharply serrate, usually glabrous, somewhat leathery.
Flowers	Flowers 1-4 in the leaf axils, pink, 5-6 mm. long, the sepals deltoid, persistent, the corolla broadly urn-shaped; anthers with awns and terminal pore-bearing tubes; ovary inferior.	Inflorescences axillary or terminal, 2- to 10-flowered racemes; calyx 5-lobed, green, glabrous; corolla white to pink, cylindric, 5-12 mm. long, 5-lobed; stamens 10, the filaments with hairs on the margins; anthers opening by pores; ovary inferior.
Fruits	Fruit a blue berry, glaucous, 5-7 mm. broad.	Berries dull black to blue, 4-12 mm. in diameter, glabrous and glaucous.

	Vaccinium uliginosum	Vaccinium corymbosum
Flowering time	June-August	May-June
Habitat	Bogs and fens from low elevation to subalpine.	Open swamps, sandy margins of ponds and lakes.
Distribution	Occurring on both sides of the Cascades crest in Washington; Alaska to California, east to Nevada, Utah, Wyoming and Montana, east across northern North America to the Atlantic. [WildflowerSearch map] [BONAP county map]	Occurring west of the Cascades crest in Washington; southwestern British Columbia to southwestern Oregon; native from southern Great Plains to eastern North America. [WildflowerSearch map] [BONAP county map]
Origin	Native	Introduced from central and eastern North Amercia
Conservation status	Not of concern	Not of concern
Sibling taxa	V. cespitosum, V. corymbosum, V. deliciosum, V. macrocarpon, V. membranaceum, V. myrtilloides, V. myrtillus, V. ovalifolium, V. ovatum, V. oxycoccos, V. parvifolium, V. scoparium	V. cespitosum, V. deliciosum, V. macrocarpon, V. membranaceum, V. myrtilloides, V. myrtillus, V. ovalifolium, V. ovatum, V. oxycoccos, V. parvifolium, V. scoparium, V. uliginosum
Web links	Local floras: BC, OR, WA Local Web sites: Flora NW, PNW Herbaria WildflowerSearch iNaturalist (observations) USDA Plants Database LBJ Wildflower Center SEINet Plants of the World Online Encyclopedia of Life Wikipedia Google Image Search	Local floras: BC, OR, WA Local Web sites: Flora NW, PNW Herbaria WildflowerSearch iNaturalist (observations) USDA Plants Database LBJ Wildflower Center SEINet Plants of the World Online Encyclopedia of Life Wikipedia Google Image Search

Vaccinium uliginosum

Vaccinium corymbosum

bog bilberry, bog blueberry

high-bush blueberry

Habit

Deciduous, branching shrub, the stems 2-6 dm. tall, not angled, the young bark yellowish-green, becoming reddish-gray with age.

Deciduous shrubs, the stems 10-50 dm. tall; twigs green, angular to terete, hairy in lines.

Leaves

Leaves alternate, entire, oblanceolate 1-3 cm. long, glabrous or finely puberulent.

Leaves alternate, the blades dark green, ovate to narrowly elliptic, 15-70 mm. long and 10-25 mm. wide, entire to sharply serrate, usually glabrous, somewhat leathery.

Flowers

Flowers 1-4 in the leaf axils, pink, 5-6 mm. long, the sepals deltoid, persistent, the corolla broadly urn-shaped;

anthers with awns and terminal pore-bearing tubes;

ovary inferior.

Inflorescences axillary or terminal, 2- to 10-flowered racemes;

calyx 5-lobed, green, glabrous;

corolla white to pink, cylindric, 5-12 mm. long, 5-lobed;

stamens 10, the filaments with hairs on the margins;

anthers opening by pores;

ovary inferior.

Fruits

Fruit a blue berry, glaucous, 5-7 mm. broad.

Berries dull black to blue, 4-12 mm. in diameter, glabrous and glaucous.

Vaccinium uliginosum

Vaccinium corymbosum

Flowering time

June-August

May-June

Habitat

Bogs and fens from low elevation to subalpine.

Open swamps, sandy margins of ponds and lakes.

Distribution

Occurring on both sides of the Cascades crest in Washington; Alaska to California, east to Nevada, Utah, Wyoming and Montana, east across northern North America to the Atlantic.

[WildflowerSearch map]

[BONAP county map]

Occurring west of the Cascades crest in Washington; southwestern British Columbia to southwestern Oregon; native from southern Great Plains to eastern North America.

[WildflowerSearch map]

[BONAP county map]

Origin

Native

Introduced from central and eastern North Amercia

Conservation status

Not of concern

Sibling taxa