Euphorbia vermiculata Raf.
Gleason, Henry A. & Cronquist, Arthur J. 1991. Manual of vascular plants of northeastern United States and adjacent Canada. lxxv + 910 pp.
Species Description - Annual; stems prostrate to ascending, to 4 dm, hirsute ± uniformly from base to tip with spreading hairs 0.5–1.5 mm; lvs obliquely ovate-oblong to ovate, 0.5–2 cm, usually half to two-thirds as wide, serrate; fr 1.5–2 mm, strongly 3-lobed, glabrous; seeds gray or pale brown, 1–1.3 mm. Fields, roadsides, and waste ground; N.S. to Mich., s. to N.J., O., and Ind.; also Ariz., and N.M. July–Oct. (E. hirsuta; Chamaesyce p.)