Vascular Plants - Araliaceae - Oplopanax:
Oplopanax horridus
Page Author: David Giblin
devil's club 
Blooms: May-July
Habit: shrub
Duration: perennial
Origin: Native
Conservation Status: Abundant; of no concern.

Distribution: Widely distributed throughout the forested areas of Washington; Alaska south to Oregon, east to Ontario.
Habitat: Moist woods at mid-elevations, especially along streams.
Species Description:

General: Deciduous shrub 1-3 m. tall, the thick stems, petioles, and leaf veins densely armed with yellowish spines 5-10 mm. long.
Leaves: Leaves alternate, petiolate, the blades palmately 7- to 9-lobed, 1-3.5 dm. broad, cordate based, irregularly twice-serrate, about equaled by the petioles.
Flowers: Flowers 5-6 mm. long in sub-sessile, capitate umbels borne in elongate racemes or panicles up to 2.5 dm. long; sepals 5, tiny; petals 5, greenish-white; ovary inferior, 2 celled; styles 2, distinct; stamens 5, longer than the petals.
Fruits: Berry bright red, 5-8 mm. long, flattened.
Accepted Name:
Oplopanax horridus (Sm.) Miq.
Synonyms:
Echinopanax horridum (Sm.) Dcne. & Planch
Echinopanax horridus (Sm.) Dcne. & Planch. ex H.A.T. Harms
Fatsia horridum (Sm.) Benth & Hook. f. ex Brewer & S. Watson
Oplopanax horridum (Sm.) Miq.
Panax horridum (Sm.)
Ricinophyllum horridum Nelson & Macbride

Treated in Flora of the PNW as:
Oplopanax horridum
Additional Resources:

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

WTU Herbarium Specimens: View list of Oplopanax horridus specimens in the WTU Herbarium database.

Washington Flora Checklist: Oplopanax horridus treatment.

E-Flora BC: Oplopanax horridus atlas page.

CalPhotos: Oplopanax horridus images.

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

Clayton J. Antieau, 1999

Ben Legler, 2004

Ben Legler, 2004

Ben Legler, 2004

Ben Legler, 2004

Ben Legler, 2004

Ben Legler, 2004

Clayton J. Antieau, 2004

Clayton J. Antieau, 2004

M. R. Smith

H. Tim Gladwin, 1983

H. Tim Gladwin, 1983

H. Tim Gladwin, 1982

Bud Kovalchik

Bud Kovalchik

Bud Kovalchik

Ben Legler, 2006

Ben Legler, 2006

Ben Legler, 2006

Ben Legler, 2006

Tim Hagan, 2008

G. D. Carr, 1981

G. D. Carr, 1981

G. D. Carr, 2003

G. D. Carr, 2007

Rod Gilbert

Rod Gilbert , 2006

Natasha Lovell, 2010

Clayton J. Antieau, 2008

Clayton J. Antieau, 2006

Clayton J. Antieau, 2008

G. D. Carr, 2009

G. D. Carr, 2009

G. D. Carr, 2009

Paul Slichter, 2009

Ray Izumi, 2009

Ray Izumi, 2009

Susan McDougall, 2010

Don Jacobson, 2014

Brian Luther, 2012

Brian Luther, 2015

Brian Luther, 2015

Susan McDougall, 2014

Susan McDougall, 2014

Susan McDougall, 2014

Robert L. Carr, 2015

Robert L. Carr, 2015

Robert L. Carr, 2015
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