Page author: David Giblin
Sisymbrium officinale
hedge mustard
WTU specimens
Other herbaria

Distribution: Occurring chiefly west of the Cascades crest in Washington; widely distributed throughout much of North America.

Habitat: Waste ground and other disturbed areas at low elevations.

Flowers: March-September

Origin: Introduced from Europe

Conservation Status: Not of concern

Description:
General:

Annual herb, the stem simple or loosely-branched, 3-8 dm. tall, strongly pubescent with spreading, stiff, pungent hairs.

Leaves:

Basal leaves lyrate-pinnatifid, petiolate, up to 2 dm. long, the terminal lobe ovate, with shallow, rounded lobes; cauline leaves alternate, sessile, much reduced, pinnatifid with 4-6 linear to narrowly-lanceolate lobes, the terminal lobe deltoid-lanceolate.

Flowers:

Inflorescence of bractless racemes, often elongate to 3.5 dm. in fruit; pedicles erect, stout, 2-3 mm. long, enlarged at the tip to the thickness of the silique; sepals 4, oblong-oblanceolate, 2 mm. long; petals 4, pale yellow, 3-4 mm. long; stamens 6; style lacking, stigma 2-lobed.

Fruits:

Siliques erect, tightly appressed, 8-15 mm. long, terete, linear but tapering to a beak-like tip; valves 3-nerved; seeds in 1 series.

Accepted Name:
Sisymbrium officinale (L.) Scop.
Publication: Fl. Carniol. ed. 2. 2: 26. 1772. 1772.

Synonyms & Misapplications:
Erysimum officinale L.
Sisymbrium officinale (L.) Scop. var. leiocarpum DC. [VPPNW2]
Sisymbrium officinale (L.) Scop. var. officinale [VPPNW2]
Additional Resources:

PNW Herbaria: Specimen records of Sisymbrium officinale in the Consortium of Pacific Northwest Herbaria database.

WA Flora Checklist: Sisymbrium officinale checklist entry.

E-Flora BC: Sisymbrium officinale atlas page.

CalPhotos: Sisymbrium officinale photos.

USDA Plants: Sisymbrium officinale information.

17 photographs:
Group by