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bog bilberry, bog blueberry

bog cranberry, small cranberry, swamp cranberry, wild cranberry

Habit Shrubs deciduous, 0.2–0.7 m, in dense mats; stems round in cross section; twigs round in cross section to angled, green to grayish brown, glabrous to finely puberulent, older twigs slightly peeling; rhizomatous.
Leaves

ovate to elliptic, 9–29 × 4–18 mm; thin or thick at maturity;

margins entire;

tips rounded to acute;

surfaces abaxially glabrous or glaucous, adaxially glabrous.

ovate to elliptic, 3–10 × 1–5 mm, strongly glaucous abaxially, green to dark green adaxially; stiff;

margins entire;

tips rounded to subacute;

surfaces abaxially glaucous, adaxially glabrous.

Inflorescences

racemes, 2–4-flowered, occasionally 1-flowered.

solitary flowers in axils;

bracts < 1 mm wide.

Flowers

distinct;

sepals 4 or 5, usually glaucous;

corollas urceolate, 4–6 × 2–5 mm, white to pink, glaucous;

petals 4 or 5;

filaments ? anthers, glabrous.

sepals 4;

calyx lobes shallow, deltate, red, glaucous;

petals 4;

corollas 4.5–7.5 mm; whitish pink to pink, glabrous;

lobes deeply parted and reflexed;

filaments 50% as long as anthers, pubescent.

Fruits

4–9 mm in diameter, blue to bluish black, with a faint bloom.

4–10 mm in diameter, dark red to bluish black, with a bloom.

Vine-like creeping shrubs

evergreen, 1–5 dm;

twigs slender; round in cross section to angled, red to brown, puberulent or sometimes glabrous, often peeling, not rhizomatous.

2n

=24, 48, 72.

=24, 48, 72.

Vaccinium uliginosum

Vaccinium oxycoccos

Distribution
[WildflowerSearch map]
[BONAP county map]
[WildflowerSearch map]
[BONAP county map]
Discussion

Wet mid-elevation montane and coastal habitats. Flowering May–Sep. 0–2400 m. BW, Casc, ECas, Est, Sisk. CA, ID, NV, WA; northern US and Canada; Asia, Europe. Native.

Some authorities consider the coastal form of V. uliginosum a distinct species (V. occidentale). If recognized, this species would be identified by its distinctly reticulated leaf veins, thin leaves, and smaller fruits.

Wet mid- to higher elevation bogs and wetlands, often in sphagnum, occasionally coastal. Flowering Apr–Jul. 0–1400 m. Casc, Est. CA, ID, WA; north to AK, east across Canada to northeastern states; circumboreal. Native.

The vine-like habit and tiny reflexed flowers of V. oxycoccos readily distinguish it from all other Oregon Vaccinium species, with the exception of escaped populations of cultivated cranber­ry (V. macrocarpon). The latter, however, has larger leaves, flowers, and fruits as well as lighter-colored leaves.

Source Flora of Oregon, volume 2, page 642
Stephen Meyers
Flora of Oregon, volume 2, page 641
Stephen Meyers
Sibling taxa
V. caespitosum, V. corymbosum, V. deliciosum, V. macrocarpon, V. membranaceum, V. myrtillus, V. ovalifolium, V. ovatum, V. oxycoccos, V. parvifolium, V. scoparium
V. caespitosum, V. corymbosum, V. deliciosum, V. macrocarpon, V. membranaceum, V. myrtillus, V. ovalifolium, V. ovatum, V. parvifolium, V. scoparium, V. uliginosum
Synonyms Vaccinium occidentale, Vaccinium uliginosum ssp. occidentale, Vaccinium uliginosum var. alpinum, Vaccinium uliginosum var. uliginosum Oxycoccus palustris, Oxycoccus palustris var. intermedium, Vaccinium oxycoccos var. intermedium, Vaccinium oxycoccos var. oxycoccos
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