Much like no. 28 [Euphorbia glyptosperma Engelm.]; stamens 5-12; seeds smooth or obscurely roughened or pitted. Dry, rocky soil; n. Mich., Minn., and Io., to B.C., Calif. and Mex.; and occasionally intr. eastward. July-Oct. (Chamaesyce s.)

Gleason, Henry A. & Cronquist, Arthur J. 1991. Manual of vascular plants of northeastern United States and adjacent Canada. lxxv + 910 pp.

©The New York Botanical Garden. All rights reserved. Used by permission.