Vaccinium cespitosum |
Vaccinium ovalifolium |
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airelle gazonnante, dwarf bilberry, dwarf blueberry, dwarf huckleberry |
airelle à feuilles ovées, Alaska blueberry, early blueberry, oval-leaf blueberry, oval-leaf huckleberry |
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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 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 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 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 | 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. |
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 | usually blue, glaucous, rarely dull black, 5–9 mm diam. |
blue, dull purplish black, or black, sometimes glaucous, 8–10 mm diam. |
Seeds | ca. 1 mm. |
ca. 1 mm. |
2n | = 24. |
= 24, 48. |
Vaccinium cespitosum |
Vaccinium ovalifolium |
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Phenology | Flowering late spring-mid summer. | Flowering spring-mid summer(-late summer). |
Habitat | Open, usually dry habitats, from lowland to subalpine areas | 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 | 0-4500 m (0-14800 ft) | 0-2100 m (0-6900 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; ID; MI; OR; SD; WA; AB; BC; NF; NS; ON; QC; YT; e Asia (c Japan, Kamchatka)
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Source | FNA vol. 8, p. 524. | FNA vol. 8, p. 524. |
Parent taxa | Ericaceae > subfam. Vaccinioideae > Vaccinium > sect. Myrtillus | Ericaceae > subfam. Vaccinioideae > Vaccinium > sect. Myrtillus |
Sibling taxa | ||
Synonyms | V. arbuscula, V. caespitosum var. arbuscula, V. caespitosum var. paludicola, V. geminiflorum, V. nivictum, V. paludicola | V. alaskaense |
Name authority | Michaux: Fl. Bor.-Amer. 1: 234. 1803 , | Smith: in A. Rees, Cycl. 36: Vaccinium no. 2. (1817) |
Web links |
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