Vaccinium cespitosum |
Vaccinium vitis-idaea |
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airelle gazonnante, dwarf bilberry, dwarf blueberry, dwarf huckleberry |
airelle vigne-d'ida, cowberry, foxberry, lingonberry, mountain cranberry, northern mountain cranberry, partridgeberry |
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Habit | Plants forming dense colonies, 0.3–6 dm, superficially rhizomatous; twigs yellow-green, reddish green, or reddish brown, terete to somewhat angled, finely puberulent or, rarely, glabrous. | Plants densely colonial, frequently mat-forming; twigs of previous year green, terete, puberulent, not verrucose. |
Leaf | blades green, usually oblanceolate, sometimes obovate or narrowly elliptic, 10–30 × 3–12 mm, margins usually serrulate from apex to at least mid blade, surfaces usually glandular abaxially, usually glabrous adaxially. |
blades pale and glandular abaxially, bright green adaxially, elliptic to obovate, 5–18 × 3–9 mm, glaucous-coriaceous, margins entire, slightly revolute. |
Pedicels | 4–6 mm. |
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Flowers | calyx pale green, lobes vestigial, glabrous; corolla white, white with pink striping, or pink, cylindric-urceolate to globose, 4–7 × 3–5 mm, thin, glaucous; filaments glabrous. |
corolla pinkish white, 3–5 mm; filaments puberulent. |
Berries | usually blue, glaucous, rarely dull black, 5–9 mm diam. |
red, 8–10 mm diam. 2n = 24. |
Seeds | ca. 1 mm. |
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2n | = 24. |
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Vaccinium cespitosum |
Vaccinium vitis-idaea |
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Phenology | Flowering late spring-mid summer. | Flowering late spring–early summer. |
Habitat | Open, usually dry habitats, from lowland to subalpine areas | Boreal taiga in jack-pine stands, muskegs, raised bogs, dry, rocky barrens, lichen woodlands, exposed habitats, heaths, high moors, headlands, tundras, cliffs, mountain summits |
Elevation | 0-4500 m (0-14800 ft) | 0-1800 m (0-5900 ft) |
Distribution |
AK; CA; CO; ID; ME; MI; MN; MT; NH; NM; NY; OR; VT; WA; WI; WY; AB; BC; MB; NB; NL; NS; NT; NU; ON; QC; SK; YT; Mexico (Chihuahua, Durango, Hidalgo); Central America (Guatemala)
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AK; CT; MA; ME; MI; MN; NH; VT; WI; AB; BC; MB; NB; NL; NS; NT; NU; ON; PE; QC; SK; YT; SPM; Greenland; n Eurasia; circumboreal
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Discussion | The distribution of Vaccinium vitis-idaea in North America extends from northwestern Greenland at 77° north latitude, south to Connecticut at 42° north latitude, and from 45° west longitude (southern tip of Greenland) west to 170° west longitude (Aleutian Islands); it is rare in Connecticut (not collected since the late 1800s), Massachusetts, Vermont, and Wisconsin. This species has been erroneously reported from New York; it hybridizes with V. myrtillus in northern Europe, producing V. ×intermedium Ruthe. The hybrid might be anticipated in North America, but the two species are not known to occur together anywhere in the flora area. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
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Source | FNA vol. 8, p. 524. | FNA vol. 8, p. 520. |
Parent taxa | Ericaceae > subfam. Vaccinioideae > Vaccinium > sect. Myrtillus | Ericaceae > subfam. Vaccinioideae > Vaccinium > sect. Vitis-idaea |
Sibling taxa | ||
Synonyms | V. arbuscula, V. caespitosum var. arbuscula, V. caespitosum var. paludicola, V. geminiflorum, V. nivictum, V. paludicola | V. vitis-idaea subsp. minus, V. vitis-idaea var. minus |
Name authority | Michaux: Fl. Bor.-Amer. 1: 234. 1803 , | Linnaeus: Sp. Pl. 1: 351. (1753) |
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