Flora of North America species comparison

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Vaccinium myrtilloides

Vaccinium hirsutum

bleuet fausse-myrtille, sour-top blueberry, sourtop, velvet-leaf blueberry, velvetleaf huckleberry

hairy blueberry, small cluster blueberry, woolly berry, wooly berry
Habit Plants forming ± open colonies, 1–11.5 dm; twigs greenish brown, terete, pilose or hairy. Plants forming open colonies, 2–5(–7.5) dm; twigs green, slightly angled, pilose or hairy.
Leaves

deciduous;

blade green, elliptic, 23–35 × 8–16 mm, membranous to subcoriaceous, margins entire, surfaces ± densely hairy (sometimes mostly on veins), eglandular, sometimes glabrescent.

deciduous;

blade green, elliptic, 23–62 × 10–36 mm, subcoriaceous, margins entire, surfaces densely hairy, eglandular abaxially.
Flowers

calyx green, glabrous, (eglandular);

corolla greenish white to pink, urceolate, 3–5 mm, (eglandular);

filaments usually hairy.

calyx green, glandular-hairy;

corolla white, cylindric, 5–9 mm, (glandular-hairy);

filaments hairy.
Berries

blue, glaucous, 6–8 mm diam., glabrous.

black, 7–9 mm diam., hairy.
Seeds

10–40, ca. 1 mm.

3–9, ca. 1 mm.
2n

= 24.

= 48.

Vaccinium myrtilloides

Vaccinium hirsutum
Phenology Flowering late spring–early summer. Flowering summer.
Habitat Open or disturbed sites in boreal forest, muskegs, bogs, barrens, headlands, outcrops, mountain meadows Dry oak-pine ridges and mountain meadows
Elevation 0-1700 m (0-5600 ft) 600-1500 m (2000-4900 ft)
Distribution
from FNA
CT; IA; IL; IN; MA; ME; MN; MT; NH; NY; OH; PA; VT; WI; WV; AB; BC; LB; MB; NB; NS; NT; ON; PE; QC; SK
[WildflowerSearch map]
[BONAP county map]
from FNA
GA; NC; TN
[WildflowerSearch map]
[BONAP county map]
Discussion

Vaccinium hirsutum is uncommon (but not threatened) in Tennessee, rare in North Carolina, and probably extirpated in Georgia.

(Discussion copyrighted by Flora of North America; reprinted with permission.)
Source FNA vol. 8, p. 529. FNA vol. 8, p. 529.
Parent taxa Ericaceae > subfam. Vaccinioideae > Vaccinium > sect. Cyanococcus Ericaceae > subfam. Vaccinioideae > Vaccinium > sect. Cyanococcus
Sibling taxa
V. angustifolium, V. arboreum, V. boreale, V. cespitosum, V. corymbosum, V. crassifolium, V. darrowii, V. deliciosum, V. erythrocarpum, V. hirsutum, V. macrocarpon, V. membranaceum, V. myrsinites, 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. boreale, V. cespitosum, V. corymbosum, V. crassifolium, V. darrowii, V. deliciosum, V. erythrocarpum, 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
Synonyms Cyanococcus canadensis, V. angustifolium var. myrtilloides, V. canadense Cyanococcus hirsutus
Name authority Michaux: Fl. Bor.-Amer. 1: 234. 1803 , Buckley: Amer. J. Sci. Arts 45: 175. 1843 ,
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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