Euphorbia marginata Pursh

• Authority

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

• Family

  Euphorbiaceae

• Scientific Name

  Euphorbia marginata Pursh

• Description

  Species Description - Annual; stems erect, 3–8 dm, softly villous, especially above; cauline lvs alternate, sessile, broadly ovate to elliptic or obovate-oblong, 4–10 cm; lvs subtending the 3-rayed infl whorled or sometimes merely opposite, those within infl smaller, margined with white or wholly white; cymes crowded; involucres hairy, the 5 lobes deeply fimbriate, the 5 appendages white, conspicuous, reniform to broadly ovate; fr 3-lobed, 6–7 mm thick; seeds ovoid, 4 mm, tuberculate; 2n=56. Prairies and plains; Minn. to Mo., w. to Mont. and N.M., and escaped from cult. elsewhere. Summer. (Dichrophyllum m.; Lepadena m.)

• Common Names

  snow on the mountain