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Montana Field Guide

Montana Field Guides

Winged Pigweed - Cycloloma atriplicifolium

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Undetermined Origin

Global Rank: G5
State Rank: SNR

Agency Status


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General Description
Annual herbs with tomentose to glabrous foliage. Stems branched, erect, 5–80 cm. Leaves short-petiolate; blades 2–7 cm long, lanceolate to narrowly oblong with toothed margins. Inflorescence of interrupted spikes in an open, leafy panicle. Flowers perfect or female; calyx lobes 5, united to above middle, 2–4 mm across; stamens 5. Fruit a subglobose achene, enclosed in the wing-like calyx; the seed flat, horizontal, smooth, 1.5 mm across (Lesica et al. 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX)..

Range Comments
In MT one collection from Richland County; most of temperate North America apart from the deep southeast and Pacific NW and NV (Lesica et al. 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).


  • Literature Cited AboveLegend:   View Online Publication
    • Lesica, P., M.T. Lavin, and P.F. Stickney. 2012. Manual of Montana Vascular Plants. Fort Worth, TX: BRIT Press. viii + 771 p.
  • Additional ReferencesLegend:   View Online Publication
    Do you know of a citation we're missing?
    • Boggs, K. W. 1984. Succession in riparian communities of the lower Yellowstone River, Montana. M.S. Thesis. Montana State University, Bozeman, 107 pp.
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Citation for data on this website:
Winged Pigweed — Cycloloma atriplicifolium.  Montana Field Guide.  .  Retrieved on , from