Erysimum repandum |
Erysimum occidentale |
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spreading wallflower |
pale wallflower, western wallflower |
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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 |
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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.
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Occurring east of the Cascades crest in Washington; northern Washington to eastern Oregon.
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Origin | Introduced from Eurasia | Native |
Conservation status | Not of concern | Not of concern |
Sibling taxa | ||
Web links |
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