Vascular Plants - Caprifoliaceae - Lonicera:
Lonicera involucrata
Page Authors: Don Knoke, David Giblin
twinberry honeysuckle, black twin-berry, twinberry, bearberry 
Blooms: April-August
Habit: shrub
Duration: perennial
Origin: Native
Conservation Status: Abundant; of no concern.

Distribution: Both sides of the Cascades in Washington; Alaska south to California, east to Montana and New Mexico.
Habitat: Common in open woods at low to mid-elevations.
Species Description:

General: Deciduous, erect shrubs 0.5-4 m. tall, with gray, shaggy bark, the young twigs quadrangular.
Leaves: Leaves opposite, short-petiolate, elliptic-oblong to elliptic-ovate, pointed, 5-14 cm. long and 2-8 cm. wide, usually glabrous above and stiff-hairy below.
Flowers: Peduncles axillary with two pairs of conspicuous bracts at the summit, broad and green or purple-tinged, becoming purplish-red and spreading in fruit; flowers paired, closely subtended by the bracts; corolla yellow, sometimes tinged with red, glandular-pubescent, 1-2 cm. long, shortly and sub-equally lobed, with a short, thick spur at the base; stamens 5, ovary 3-celled, inferior.
Fruits: Fruit a shiny, black, globose berry 1 cm. thick.
Subspecies & Varieties:
Accepted Name:
Lonicera involucrata (Rich.) Banks
Synonyms:
(none)

Treated in Flora of the PNW as:
Lonicera involucrata
Additional Resources:

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

WTU Herbarium Specimens: View list of Lonicera involucrata specimens in the WTU Herbarium database.

Washington Flora Checklist: Lonicera involucrata treatment.

E-Flora BC: Lonicera involucrata atlas page.

CalPhotos: Lonicera involucrata images.

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

Clayton J. Antieau, 1985

Clayton J. Antieau, 1999

Ben Legler, 2004

Ben Legler, 2004

Ben Legler, 2004

Ben Legler, 2004

Ben Legler, 2004

Ben Legler, 2004

Jim Riley

Dana Visalli

Dana Visalli

H. Tim Gladwin, 1988

H. Tim Gladwin, 1987

Bud Kovalchik

Bud Kovalchik

Bud Kovalchik

Bud Kovalchik

Ben Legler, 2006

Ben Legler, 2006

Ben Legler, 2006

Ben Legler, 2006

Tim Hagan, 2006

Chris Wood, 2009

Chris Wood, 2009

Chris Wood, 2009

G. D. Carr, 2007

G. D. Carr, 2007

G. D. Carr, 2007

G. D. Carr, 2007

G. D. Carr, 2006

G. D. Carr, 2006

G. D. Carr, 2008

G. D. Carr, 2008

G. D. Carr, 2008

Rod Gilbert, 2005

Rod Gilbert, 2005

Susan McDougall, 2004

Ron Bockelman, 2011

Ron Bockelman, 2011

Ron Bockelman, 2012

Ron Bockelman, 2012

Ron Bockelman, 2012

Ron Bockelman, 2012

Ron Bockelman, 2012

Ron Bockelman, 2011

Ron Bockelman, 2011

Ron Bockelman, 2010

Ron Bockelman, 2010

Ron Bockelman, 2010

Susan McDougall, 2014

Brian Luther, 2015

Brian Luther, 2015

Brian Luther, 2015

Brian Luther, 2015

Brian Luther, 2015

Maria Yousoufian, 2016

Maria Yousoufian, 2016

Roger T. George, 2016

Roger T. George, 2016

Roger T. George, 2016

Roger T. George, 2016
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Washington Native Plant Society
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