Distribution: Introduced in much of the United States; more common east of the Cascades in Washington.
Habitat: Grain fields and waste areas.
Flowers: June - August
Origin: Introduced from Europe
Conservation Status: Not of concern
Annual with 1-3 simple or branched stems, 2-6 dm. tall, stiff-hairy throughout and glandular-pubescent above.
Leaves opposite, ovate-lanceolate to elliptic-oblanceolate, 5-12 cm. long and up to 4 cm. broad, the lower ones long-petiolate, the upper sub-sessile.
Flowers few to several in an open inflorescence, the pedicels 3-30 mm. long; calyx 5u00e2u20acu201clobed, tubular, 15 mm. long at flowering, much enlarged in fruit, 10-nerved, the lobes lance-linear, 5-9 mm. long; petals 5, white to pinkish, glabrous, the claw 12-25 mm. long, auriculate above, the blade 7-10 mm. long, bi-lobed less than half the length; blade appendages 2, 0.5-1.5 mm. long and broad; stamens 10; styles 3. Flowers open at dusk.