Perennial from a scaly bulbous base; lvs glabrous, or the petioles sometimes hairy; peduncles erect, 1-2 dm, much surpassing the lvs, with an umbelliform cluster of pedicellate fls subtended by small bracts; pet commonly rose-violet (white), 10-18 mm, not retuse; sep callous-tipped; 2n=28. Dry upland woods and prairies; Mass. to N.D., s. to Fla. and Tex. Apr.-June. (Ionoxalis v.)
Gleason, Henry A. & Cronquist, Arthur J. 1991. Manual of vascular plants of northeastern United States and adjacent Canada. lxxv + 910 pp.