Distribution: Distributed east of the Cascades in Washington in the Columbia Basin and along the Snake River; north-central Oregon, southeastern Oregon and adjacent Idaho, southeastern Idaho and adjacent Wyoming.
Habitat: Dunes and sandy soil at low elevations.
Conservation Status: Not of concern
Herbaceous perennial from a woody taproot, somewhat glandular, finely puberulent to glabrous, with numerous decumbent but erect-tipped branches 2-7 dm. long.
Leaves opposite, pale greenish, rather fleshy, the blade lanceolate to deltoid, 2-5 cm. long, abruptly narrowed to a petiole slightly shorter to 3 times as long.
Flowers perfect, in heads on peduncles that exceed the leaves, subtended by 5 narrowly oblong to oblong-oblanceolate, membranous, whitish involucral bracts 1.5-4 mm. wide and 7-10 mm. long; perianth densely puberulent to glabrous, white, with a narrow tube 12-20 mm. long and 5 flaring, white lobes 7-10 mm. broad; corolla none; stamens 4-5, included; style 1, included.
Achene 8-11 mm. long, puberulent, wingless or with 5 thin, firm wings, the 2 sides closely appressed to each other, broader than the body of the fruit, narrowed to the base.