Finely glandular-hairy; stems 1-3 dm, simple or occasionally branched; lvs numerous, linear or rarely trifid, 1-2 cm; bracteal lvs trifid or rarely linear; fls bright yellow, 9-12 mm; 2n=28. Dry prairies and plains; Minn. to Alta. and B.C., s. to Nebr., N.M., and Calif. July-Sept.
Gleason, Henry A. & Cronquist, Arthur J. 1991. Manual of vascular plants of northeastern United States and adjacent Canada. lxxv + 910 pp.