Annual herb 10 cm - 1 m tall Stem: white-mealy to a varying degree. Leaves: alternate, stalked, 1.7 - 4 cm long, diamond-shaped or triangular, three-lobed, toothed above basal lobes, white-mealy to a varying degree. Inflorescence: a dense, irregularly rounded cluster of flowers (glomerule), which together form an upright spike with leafy bracts. Flowers: greenish, small, with five nearly distinct sepals and no petals. Sepals broadly wing-keeled, white-mealy. Stamens five. Styles with yellow at the base. Stigmas two. Fruit: one-seeded (achene or utricle), sometimes enclosed in the persistent, incurved sepals, light yellowish around style, depressed egg-shaped, thin-walled. Wall (pericarp) not closely fitting to the seed, honeycomb-like. Seed brown, 1 - 1.5 mm wide, round, round-margined, honeycomb-like.
Similar species: No information at this time.
Flowering: late June to mid-October
Habitat and ecology: Introduced from Europe. A weed of cultivated and waste ground.
Occurence in the Chicago region: non-native
Etymology: Chenopodium comes from the Greek words chen, meaning goose, and podion, meaning "little foot," referring to the leaf shape of some species. Berlandieri is named after Jean Louis Berlandier (1805-1851), the botanist who discovered the species.
Author: The Morton Arboretum
From Flora of Indiana (1940) by Charles C. Deam
This species and the following [Chenopodium bushianum] are characterized by the peculiar alveolar depressions of their seeds, distinguishing them well from other species. The whole group however is quite polymorphic.