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spreading wallflower

pale wallflower, western wallflower

Habit Simple to freely-branched annual, the stem 2-5 dm. tall, somewhat grayish. Grayish biennial from a simple crown, the simple, single stem 2-4.5 dm. tall.
Leaves

Basal leaves several, lanceolate to oblanceolate, up to 15 cm. long and 12 mm. broad, wavy-toothed to wavy-margined;

cauline leaves similar, reduced upward, sometimes becoming entire.

Basal leaves many, rosette-forming, linear-oblanceolate, 4-8 cm. long and 2-4 mm. broad, mostly entire;

cauline leaves many, linear to linear-lanceolate, 1-3 mm. broad, not much reduced upward, usually entire.

Flowers

Flowers rather showy, in crowded, bractless racemes; pedicles stout, 2-4 mm. long, almost as thick as the siliques;

sepals 4, the outer 2 saccate at the base;

petals 4, light yellow, 6-9 mm. long, very slenderly clawed;

stamens 6;

style 1 mm. long, stigma bi-lobed.

Flowers rather showy, in crowded, bractless racemes; pedicles stout, ascending;

sepals 4, 8-10 mm. long, the outer 2 saccate at the base;

petals 4, bright yellow, the claw slightly exceeding the sepals, the obovate blade 6-10 mm. long;

stamens 6;

style 3-4 mm. long, stigma bi-lobed.

Fruits

Siliques spreading to ascending, curved, rigid, 6-8 cm. long and about 1.5 mm. thick, nearly quadrangular, constricted between the seeds;

seeds in 1 series, wingless.

Siliques ascending-erect, strongly flattened, 7-9 cm. long and about 2.5 mm. broad, the valves strongly nerved;

seeds in 1 series, narrowly wing-margined all the way around.

Erysimum repandum

Erysimum occidentale

Flowering time April-June March-May
Habitat Wasteland in dry areas, plains and lower mountains. Sagebrush hills and valleys.
Distribution
Occurring east of the Cascades crest and in the Columbia River Gorge in Washington; British Columbia to California, east across much of North America to the Atlantic Coast.
[WildflowerSearch map]
[BONAP county map]
Occurring east of the Cascades crest in Washington; northern Washington to eastern Oregon.
[WildflowerSearch map]
[BONAP county map]
Origin Introduced from Eurasia Native
Conservation status Not of concern Not of concern
Sibling taxa
E. arenicola, E. capitatum, E. cheiranthoides, E. cheiri, E. inconspicuum, E. occidentale
E. arenicola, E. capitatum, E. cheiranthoides, E. cheiri, E. inconspicuum, E. repandum
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