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| Common lambsquarters cotyledons do not have midveins. |
Common lamsquarters seedling. |
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| Mature seedhead of common lambsquarters. |
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| Common lambsquarter leaf. |
Common lambsquarter plant. |
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Life cycle: Erect summer annual.
Reproduction: Seeds.
Stems: Erect, moderately branched central stem up to 6 feet in height. Mature stems are vertically grooved with red, purple or light green stripes.
Flowers and fruit: Green, inconspicuous flowers are found in dense, granular clusters at the stem ends. Round to oval, somewhat flattened, black to brown, shiny seeds are enclosed by a star-shaped, papery covering.
Leaves: Cotyledons are oblong, narrow and linear with no midvein and a dull green to gray cast. The first one or two leaf pairs are opposite; all remaining leaves are alternate. Mature leaves are highly variable, being triangle-, diamond- or lance-shaped and light green above with gray, mealy undersides. Lower leaves have a petiole and irregular wavy to shallowly toothed margins. Young or newly emerged leaves often have a gray, mealy coating on both surfaces. |
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