Vascular Plants - Ericaceae - Vaccinium:
Vaccinium membranaceum
Page Authors: Don Knoke, David Giblin
thin-leaved huckleberry, tall huckleberry, square-twig blueberry 
Blooms: May-July
Habit: shrub
Duration: perennial
Origin: Native
Conservation Status: Abundant; of no concern.

Distribution: Widely distributed throughout forested and mountainous areas of Washington; British Columbia south to California, east the Rocky Mountains; Ontario and Michigan.
Habitat: Common in dry to moist coniferous forests and open areas, moderate to mid-elevations in the mountains.
Species Description:

General: Deciduous spreading shrub 0.5-2 m. tall, the young twigs slightly angled, yellow-green, glabrous, the old bark grayish and shredding.
Leaves: Leaves alternate, thin, ovate to elliptic-obovate, tapered and pointed at the tip and rounded-acute at the base, 2-5 cm. long, finely serrulate nearly full length, sparsely glandular and paler on the lower surfaces.
Flowers: Flowers single in the axils on pedicels 5-10 mm. long, pale yellowish-pink, about 6 mm. long; calyx obscurely 5-lobed; corolla entire, broadly urn-shaped, longer than broad; anthers with dorsal awns and apical, pore-bearing tubes; ovary inferior.
Fruits: Fruit a berry, blackish-purple or dark purplish-reddish, not glaucous, 7-9 mm. broad, broader than high.
Accepted Name:
Vaccinium membranaceum Dougl. ex Torr.
Synonyms:
Vaccinium coccineum Piper
Vaccinium globulare Rydb.
Vaccinium macrophyllum Piper
Vaccinium membranaceum Douglas ex Torrey var. rigidum (Hooker) Fernald

Treated in Flora of the PNW as:
Vaccinium globulare, Vaccinium membranaceum
Additional Resources:

PNW Herbaria Specimens: View list of all Vaccinium membranaceum specimens in the Consortium of Pacific Northwest Herbaria database.

WTU Herbarium Specimens: View list of Vaccinium membranaceum specimens in the WTU Herbarium database.

Washington Flora Checklist: Vaccinium membranaceum treatment.

E-Flora BC: Vaccinium membranaceum atlas page.

CalPhotos: Vaccinium membranaceum images.

USDA Plants Database: Vaccinium membranaceum.
Additional photographs of Vaccinium membranaceum:
(click on a thumbnail to view larger photo)

Ben Legler, 2004

Ben Legler, 2004

Ben Legler, 2004

Ben Legler, 2004

Ben Legler, 2004

Ben Legler, 2004

Ben Legler, 2004

Ben Legler, 2004

H. Tim Gladwin, 1982

H. Tim Gladwin, 1994

H. Tim Gladwin, 1982

Bud Kovalchik

Bud Kovalchik

Bud Kovalchik

Bud Kovalchik

Bud Kovalchik

Bud Kovalchik

G. D. Carr, 2008

G. D. Carr, 2008

G. D. Carr, 2008

G. D. Carr, 2008

G. D. Carr, 2008

G. D. Carr, 2008

Craig Althen, 2010

Robert L. Carr, 2010

Robert L. Carr, 2003

Robert L. Carr, 2010

Robert L. Carr, 2010

Susan McDougall, 2006

Ron Bockelman, 2011

Ron Bockelman, 2012

Ron Bockelman, 2012

Ron Bockelman, 2012

Ron Bockelman, 2012

Ron Bockelman, 2012

Ron Bockelman, 2012

Susan McDougall, 2014

Robert L. Carr, 2013

Robert L. Carr, 2010
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Washington Native Plant Society
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