Page authors: Ben Legler, David Giblin
Bellardia viscosa
yellow glandweed

Distribution: Occurring west of the Cascades crest in Washington; British Columbia to California; also in south-central U.S.

Habitat: Roadsides, fields, pastures, ditches, wastelots, and other disturbed open areas at low elevations.

Flowers: June-August

Origin: Introduced from Eurasia.

Growth Duration: Annual

Conservation Status: Not of concern

Pollination: Bumblebees, bees, flies


Erect annual from fibrous roots, the stem usually simple, 1-7 dm. tall; herbage with coarse, spreading hairs, these becoming glandular upward.


Leaves all cauline, ovate to lanceolate, with rounded teeth, 1-4 cm. long and up to 2 cm. wide, the lower opposite, the upper often alternate.


Inflorescence a terminal, leafy-bracteate, spike-like raceme; calyx 4-lobed; corolla bilabiate, yellow, 1.5-2 cm. long, surpassing the calyx, the upper lip hooded, enclosing the 4 stamens, the lower lip spreading, 3-lobed, about as long as the upper lip; stigma capitate, entire.


Capsule with numerous seeds.

Accepted Name:
Bellardia viscosa (L.) Fisch. & C.A. Mey.
Publication: Index Seminum [St. Petersburg] 2: 4. 1836.

Synonyms & Misapplications:
Parentucellia viscosa (L.) Caruel [HC]
Additional Resources:

PNW Herbaria: Specimen records of Bellardia viscosa in the Consortium of Pacific Northwest Herbaria database.

WA Flora Checklist: Bellardia viscosa checklist entry.

OregonFlora: Bellardia viscosa information.

E-Flora BC: Bellardia viscosa atlas page.

CalPhotos: Bellardia viscosa photos.

USDA Plants: Bellardia viscosa information.

30 photographs:
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