Burke: Vaccinium myrtillus vs. Vaccinium scoparium

	Vaccinium myrtillus	Vaccinium scoparium
	dwarf blueberry, low blueberry	grouseberry
Habit	Deciduous, many-branched shrub 2-3 dm. tall, the branches strongly angled, greenish, usually puberulent.	Deciduous shrub, more or less matted, 1-2.5 dm. tall, the branches numerous, slender, broom-like, strongly angled, greenish or yellowish-green, usually glabrous.
Leaves	Leaves ovate to elliptic-lanceolate, 1-3 cm. long, light green, strongly serrulate, strongly veiny on the lower surface.	Leaves lanceolate to ovate-lanceolate, 8-15 mm. long, finely serrulate, light green, usually glabrous, conspicuously veiny on the lower surface.
Flowers	Flowers single in the axils on pedicels 2-3 mm. long; calyx shallowly 5-lobed; corolla entire, pinkish, broadly urn-shaped; anthers with dorsal awns and apical, pore-bearing tubes; ovary inferior.	Flowers solitary in the axils of the lowest leaves of the youngest shoots, short-petiolate; corolla entire, pinkish, broadly urn-shaped, about 4 mm. long; anthers with awns and terminal pore-bearing tubes; ovary inferior.
Fruits	Fruit a berry, dark red to bluish, 5-8 mm. long.	Fruit a bright red berry, globose, 3-5 mm. broad.

	Vaccinium myrtillus	Vaccinium scoparium
Flowering time	May-August	May-August
Habitat	Forest openings at middle elevations in the mountains	Open, dry forests, mid- to high elevations in the mountains.
Distribution	Occurring chiefly east of the Cascades crest in Washington; British Columbia to Oregon, east to the Rocky Mountains. [WildflowerSearch map] [BONAP county map]	Occurring on both sides of the Cascades crest in Washington; British Columbia to California, east to the Rocky Mountains and northern Great Plains. [WildflowerSearch map] [BONAP county map]
Origin	Native	Native
Conservation status	Not of concern	Not of concern
Sibling taxa	V. cespitosum, V. corymbosum, V. deliciosum, V. macrocarpon, V. membranaceum, V. myrtilloides, V. ovalifolium, V. ovatum, V. oxycoccos, V. parvifolium, V. scoparium, V. uliginosum	V. cespitosum, V. corymbosum, V. deliciosum, V. macrocarpon, V. membranaceum, V. myrtilloides, V. myrtillus, V. ovalifolium, V. ovatum, V. oxycoccos, V. parvifolium, 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, CA, OR, WA Local Web sites: CalFlora, CalPhotos, Flora NW, PNW Herbaria, Turner Photog. WildflowerSearch iNaturalist (observations) USDA Plants Database LBJ Wildflower Center SEINet Plants of the World Online Encyclopedia of Life Wikipedia Google Image Search

Vaccinium myrtillus

Vaccinium scoparium

dwarf blueberry, low blueberry

grouseberry

Habit

Deciduous, many-branched shrub 2-3 dm. tall, the branches strongly angled, greenish, usually puberulent.

Deciduous shrub, more or less matted, 1-2.5 dm. tall, the branches numerous, slender, broom-like, strongly angled, greenish or yellowish-green, usually glabrous.

Leaves

Leaves ovate to elliptic-lanceolate, 1-3 cm. long, light green, strongly serrulate, strongly veiny on the lower surface.

Leaves lanceolate to ovate-lanceolate, 8-15 mm. long, finely serrulate, light green, usually glabrous, conspicuously veiny on the lower surface.

Flowers

Flowers single in the axils on pedicels 2-3 mm. long;

calyx shallowly 5-lobed;

corolla entire, pinkish, broadly urn-shaped;

anthers with dorsal awns and apical, pore-bearing tubes;

ovary inferior.

Flowers solitary in the axils of the lowest leaves of the youngest shoots, short-petiolate;

corolla entire, pinkish, broadly urn-shaped, about 4 mm. long;

anthers with awns and terminal pore-bearing tubes;