Euphorbia glyptosperma Engelm.
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Authority
Gleason, Henry A. & Cronquist, Arthur J. 1991. Manual of vascular plants of northeastern United States and adjacent Canada. lxxv + 910 pp.
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Family
Euphorbiaceae
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Scientific Name
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Description
Species Description - Glabrous annual; stems mostly prostrate, freely branched, 1–3 dm, often forming mats; lvs narrowly to broadly oblong or ovate, 4–15 mm, strongly inequilateral, minutely serrulate, especially on the rounded summit, varying to entire; appendages short but evident; stamens 1–5 (typically 4) per involucre; fr depressed-ovoid, sharply 3-angled, 1.5–2 mm; seeds 1–1.3 mm, sharply 4-angled, marked with several conspicuous transverse ridges. Dry sandy soil; Que. and N.B. to B.C., s. to N.Y., Ind., Mo., and Ariz. June–Oct. (Chamaesyce g.)
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Common Names
ridge-seed spurge