Northern Prairie Wildlife Research Center
Western Wetland Flora
Field Office Guide to Plant Species
Chenopodium ambrosioides L.
- Family: Goosefoot (Chenopodiaceae)
- Flowering: June-December
- Field Marks: This species is readily recognized by its strong-scented stems and leaves, the interrupted spikes of flowers, and the gland-dotted sepals.
- Habitat: Old fields, disturbed areas, particularly in low, moist areas.
- Habit: Annual or perennial herb with a taproot.
- Stems: Upright, much branched, up to 3 feet tall, glandular-hairy or nearly smooth, strongly scented.
- Leaves: Alternate, simple, lanceolate to oblong, up to 4 inches long, pointed at the tip, shallowly or coarsely toothed or not toothed at all, glandular-hairy or nearly smooth, strongly scented.
- Flowers: Many crowded into elongated or spherical spikes; spikes often interrupted, usually without bracts.
- Sepals: 5, green, united below, about 1/20 inch long, gland-dotted.
- Petals: 0.
- Stamens: 5.
- Pistils: Ovary superior; stigmas 2.
- Fruits: Flattened, enclosed by the sepals, 1-seeded; seed spherical, about 1/36 inch in diameter, dark brown.
- Notes: This species is native to tropical America. The plant has been used in the past medicinally.
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