Distribution: Widely distributed throughout Washington; widely distributed throughout North America.
Habitat: Variety of habitats, sea level to mid-elevations in the mountains.
Conservation Status: Not of concern
Scrambling annual, the weak stem 1-10 dm. tall, little branched, square with retrorse hooks on the angles.
Leaves mostly in whorls of 8, tipped with a sharp point, narrow, 1-nerved, 1-4 cm. long, with stiff, recurved hairs on the margins and mid-rib beneath.
Inflorescences of 3-5 flowers on peduncles in the leaf axils which surpass the whorl of leaves, usually with a whorl of small leaves at the summit, or the peduncles in threes at the ends of short, axillary branches; pedicels straight and ascending; calyx obsolete; corolla rotate, 1-2 mm. wide, greenish-white, the 4 lobes much longer than the tube; styles 2, short; ovary 2-celled, inferior.
Fruit dry, 2-4 mm. long, covered with hooked bristles.