Northern Prairie Wildlife Research Center
Winged Pigweed (Cycloloma atriplicifolium)
- Family: Goosefoot (Chenopodiaceae)
- Flowering: June-October.
- Field Marks: The distinguishing feature of this
sand-loving species is the fruits surrounded by circular wings.
- Habitat: Along major rivers, around large lakes,
often in sand.
- Habit: Annual herb often forming rounded tumbleweed-like mounds.
- Stems: Spreading, much branched, up to 2 feet long.
- Leaves: Alternate, simple, lanceolate to elliptic,
pointed at the tip, tapering to the base, smooth or hairy,
irregularly and coarsely toothed, up to 3 inches long, up to 3/4
- Flowers: Several in short, interrupted spikes, each
flower greenish, about 1/6 inch across, without a stalk.
- Sepals: 5, greenish.
- Petals: 0.
- Stamens: 5.
- Pistils: Ovary superior; styles 3.
- Fruits: 1-seeded, surrounded by a flat, circular,
nearly transparent wing about 1/6 inch across.
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