Vaccinium uliginosum |
Vaccinium ovalifolium |
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airelle des marécages, alpine blueberry, blueberry, bog bilberry, bog blueberry |
airelle à feuilles ovées, Alaska blueberry, early blueberry, oval-leaf blueberry, oval-leaf huckleberry |
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Habit | Plants forming dense mats or open, extensive colonies; twigs of current season pale green, terete, glabrous or faintly puberulent, not verrucose. | Plants crown-forming, clumped, suckering when disturbed, rarely forming extensive colonies, 3–40 dm, not rhizomatous; twigs yellow-green or golden brown, glaucous, usually terete, sometimes somewhat angled, glabrous, sometimes hairy in lines. |
Leaf | blades usually glaucous abaxially, green to glaucous adaxially, orbiculate, ovate, or obovate to narrowly elliptic, 8–14 × 3–7 mm, membranous, margins entire, surfaces often faintly puberulent, sometimes hairy throughout. |
blades pale green or glaucous abaxially, slightly darker pale green adaxially, ovate to elliptic, rarely obovate, 25–39 × 16–20 mm, margins entire to obscurely serrate, abaxial surface glabrous, eglandular (sometimes hairy or glandular along midvein), adaxial surface usually glabrous (sometimes hairy and/or glandular). |
Flowers | sepals usually distinct; corolla white to pink, 3–4(–5) mm, lobes 0.3–0.4 mm; filaments glabrous. |
calyx pale green or glaucous, lobes vestigial or absent, glabrous; corolla pink, bronze-pink, or greenish white, globose, sometimes urceolate, 5–7 × 4–5 mm, thin, glaucous; filaments glabrous or pilose basally. |
Berries | blue, 6–8 mm diam., glaucous. |
blue, dull purplish black, or black, sometimes glaucous, 8–10 mm diam. |
Seeds | ca. 1 mm. |
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2n | = 24, 48, 72. |
= 24, 48. |
Vaccinium uliginosum |
Vaccinium ovalifolium |
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Phenology | Flowering Jun–Jul. | Flowering spring-mid summer(-late summer). |
Habitat | Wet or dry acidic sites in boreal taiga, tundras, and alpine thickets and krummholz | Moist or mesic coniferous woods, transitional habitats adjacent to these coniferous stands, cut-over coniferous woods, verges of road cuts, margins of coniferous woods, peaty slopes |
Elevation | 0-2200 m (0-7200 ft) | 0-2100 m (0-6900 ft) |
Distribution |
AK; CA; ID; ME; MI; MN; MT; NH; NV; NY; OR; UT; VT; WA; WY; AB; BC; MB; NB; NF; NS; NT; NU; ON; PE; QC; SK; YT; SPM; Greenland; n Eurasia
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AK; ID; MI; OR; SD; WA; AB; BC; NF; NS; ON; QC; YT; e Asia (c Japan, Kamchatka)
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Discussion | Vaccinium uliginosum is transcontinental in North America between 60° and 70° north latitude; farther north it is rare, especially in the Queen Elizabeth Islands. To the southwest, it is found as far as northern California and northwestern Utah. The summits of the White Mountains of New Hampshire form its southernmost limit in eastern North America. This wide-ranging plant shows considerable variation, notably in floral morphology. Subspecies have been recognized (cf. S. B. Young 1970); a review of morphological variation by H. J. Warr (1981) did not support the distinctiveness of infraspecific taxa. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
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Source | FNA vol. 8, p. 518. | FNA vol. 8, p. 524. |
Parent taxa | Ericaceae > subfam. Vaccinioideae > Vaccinium > sect. Vaccinium | Ericaceae > subfam. Vaccinioideae > Vaccinium > sect. Myrtillus |
Sibling taxa | ||
Synonyms | V. gaultherioides, V. occidentale, V. uliginosum subsp. alpinum, V. uliginosum var. alpinum, V. uliginosum subsp. gaultherioides, V. uliginosum subsp. microphyllum, V. uliginosum subsp. occidentale, V. uliginosum var. occidentale, V. uliginosum subsp. pedris, V. uliginosum subsp. pubescens, V. uliginosum var. salicinum | V. alaskaense |
Name authority | Linnaeus: Sp. Pl. 1: 350. 1753 , | Smith: in A. Rees, Cycl. 36: Vaccinium no. 2. (1817) |
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