English: Sleeping combseed; Shortleaf combseed; Winged combseed; Northern pectocarya.
Region: western North America.
Botany: disturbed areas such as roadsides. This is an annual herb producing a slender, rough-haired stem, mostly decumbent in form, to a maximum length of about 25 centimeters. The small, pointed linear leaves are alternately arranged, widely spaced along the stem. The inflorescence is a series of flowers, each on a curved pedicel. The flower has small green sepals and tiny white petals. The fruit is an array of four nutlets each lined with comblike prickles.