Page authors: Don Knoke, David Giblin
Atriplex rosea
red orach, tumbling orach

Distribution: Occurring east of the Cascades crest in Washington; British Columbia to California, east to the Rocky Mountains and Great Plains; also in scattered locations in central and eastern U.S.

Habitat: Weedy species of irrigated land and roadsides.

Flowers: July-September

Origin: Introduced from Eurasia

Growth Duration: Annual

Conservation Status: Not of concern

Pollination: Wind


Monoecious, erect, freely-branched to simple annual, 2-12 dm. tall, grayish with a mealy coating at least on the lower surface of the leaves.


Leaves alternate, petiolate or the upper sessile, lanceolate to ovate, 2-5 cm. long, the blades wavy-dentate and often slightly hastate, tapered or rounded at the base.


Flowers glomerate in the leaf axils and on short axillary and terminal spikes, the staminate above the pistillate; staminate flowers with a 5-parted perianth; pistillate flowers without a perianth, with 2 subtending bracts which are fused less than half their length, triangular or nearly orbicular, strongly flattened, 4-8 mm. long, acute at the tip, the margins dentate, the sides with sharp projections.



Accepted Name:
Atriplex rosea L.
Publication: Sp. Pl., ed. 2. 2: 1493. 1763.

Synonyms & Misapplications:
(none provided)
Additional Resources:

PNW Herbaria: Specimen records of Atriplex rosea in the Consortium of Pacific Northwest Herbaria database.

WA Flora Checklist: Atriplex rosea checklist entry.

OregonFlora: Atriplex rosea information.

E-Flora BC: Atriplex rosea atlas page.

CalPhotos: Atriplex rosea photos.

USDA Plants: Atriplex rosea information.

16 photographs:
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