Page author: David Giblin
Rhus glabra
smooth sumac

Distribution: Occurring east of the Cascades crest in Washington; British Columbia to Mexico, east to the Atlantic Coast.

Habitat: Dry hillsides and draws, low to moderate elevations.

Flowers: April-July

Origin: Native

Growth Duration: Perennial

Conservation Status: Not of concern

Pollination: Bumblebees, bees, beetles


Smooth-barked shrubs 1-3 m. tall, the branches glabrous, or sparsely pubescent in the inflorescence.


Leaves pinnate; leaflets 7-29, oblong-lanceolate to elliptic, serrate, 5-12 cm. long.


Flowers in large, dense, terminal, compound panicles, mostly imperfect and the plants dioecious; calyx 5-parted; petals 5, 1-2 mm. long, yellowish, acute; fertile stamens 5, attached at the edge of a flat, lobed, fleshy disk; ovary superior, style 1, stigmas 3.


Fruit drupe-like, 4-5 mm. long, thickly reddish-hairy.

Accepted Name:
Rhus glabra L.
Publication: Sp. Pl. 1: 265. 1753.

Synonyms & Misapplications:
(none provided)
Additional Resources:

PNW Herbaria: Specimen records of Rhus glabra in the Consortium of Pacific Northwest Herbaria database

WA Flora Checklist: Rhus glabra checklist entry

OregonFlora: Rhus glabra information

E-Flora BC: Rhus glabra atlas page

CalPhotos: Rhus glabra photos

51 photographs:
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