Flora of North America species comparison

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Vaccinium deliciosum

Vaccinium boreale

blue-leaf huckleberry, Cascade bilberry, Cascade blueberry, Cascade huckleberry, Cascades blueberry, Rainier blueberry

bleuet boréal, northern blueberry, sweet hurts
Habit Plants forming small clumps to extensive open colonies, 0.5–15 dm, rhizomatous; twigs green, sometimes glaucous, ± terete, rarely angled, usually glabrous, rarely hairy along veins or puberulent. Plants forming small, dense colonies, 0.1–0.9 dm, (superficially rhizomatous); twigs green, (delicate), angled, (intricately branched), hairy in lines.
Leaves

blades usually glaucous, obovate, oblanceolate, or, rarely, elliptic, 17–35 × 9–17 mm, margins usually serrate for at least distal 2/3, surfaces usually glabrous, eglandular or, rarely, glandular throughout, often glandular-hairy along midvein.

deciduous;

blade bright green, narrowly elliptic, 8–21 × 2–6 mm, membranous, margins sharply, uniformly serrate, surfaces usually glabrous, eglandular abaxially.
Flowers

calyx glaucous, lobes indistinct or shallow, glabrous;

corolla pink, creamy pink, or red, globose to globular-urceolate, 4–6 × 5–7 mm, thin, glaucous;

filaments glabrous.

calyx green, glaucous, glabrous (sometimes ciliate);

corolla white to greenish white, cylindric, 3–4 mm;

filaments ciliate.
Berries

usually blue, glaucous, sometimes dull black, maroon, or red, 9–13 mm diam.

blue, glaucous, 3–5 mm diam., glabrous.
Seeds

ca. 1 mm.

10–30, ca. 1.1 mm.
2n

= 48.

= 24.

Vaccinium deliciosum

Vaccinium boreale
Phenology Flowering late spring–early summer. Flowering late spring–early summer.
Habitat Alpine meadows, subalpine coniferous woods, talus slopes Headlands, open, rocky uplands, alpine heaths and meadows, forest-tundra. 0-2000 m
Elevation 600-2000 m (2000-6600 ft)
Distribution
from FNA
CA; ID; OR; WA; BC
[WildflowerSearch map]
[BONAP county map]
from FNA
ME; NH; NY; VT; NB; NL; NS; QC
[WildflowerSearch map]
[BONAP county map]
Discussion

Vaccinium deliciosum produces especially flavorful berries. Research at the University of Idaho and Washington State University identified 31 aromatic flavor compounds in the fruits. Despite its outstanding flavor and large fruit size, it is harvested less than is V. membranaceum because it has a smaller range and is less abundant there than its black-fruited congener. Also, like V. membranaceum, V. deliciosum is native at higher elevations and can be difficult to grow at low elevations. Although rhizomatous, V. deliciosum has a dense root system and transplants easily.

(Discussion copyrighted by Flora of North America; reprinted with permission.)
Source FNA vol. 8, p. 523. FNA vol. 8, p. 528.
Parent taxa Ericaceae > subfam. Vaccinioideae > Vaccinium > sect. Myrtillus Ericaceae > subfam. Vaccinioideae > Vaccinium > sect. Cyanococcus
Sibling taxa
V. angustifolium, V. arboreum, V. boreale, V. cespitosum, V. corymbosum, V. crassifolium, V. darrowii, V. erythrocarpum, V. hirsutum, V. macrocarpon, V. membranaceum, V. myrsinites, V. myrtilloides, V. myrtillus, V. ovalifolium, V. ovatum, V. oxycoccos, V. pallidum, V. parvifolium, V. scoparium, V. stamineum, V. tenellum, V. uliginosum, V. vitis-idaea
V. angustifolium, V. arboreum, V. cespitosum, V. corymbosum, V. crassifolium, V. darrowii, V. deliciosum, V. erythrocarpum, V. hirsutum, V. macrocarpon, V. membranaceum, V. myrsinites, V. myrtilloides, V. myrtillus, V. ovalifolium, V. ovatum, V. oxycoccos, V. pallidum, V. parvifolium, V. scoparium, V. stamineum, V. tenellum, V. uliginosum, V. vitis-idaea
Name authority Piper: Mazama 2: 103. 1901 , I. V. Hall & Aalders: Amer. J. Bot. 48: 200. 1961 ,
Web links 
Unless otherwise noted, all data comes from the online version of the Flora of North America, who have made most of their content available via a Creative Commons license (CC BY 4.0).



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