Common mallow – Malva neglecta

Common lambsquarters plant

Common lambsquarters plant

Common lambsquarters mature seedhead

Common lambsquarters mature seedhead

Common lambsquarters seedling

Common lambsquarters seedling

Common lambsquarters cotyledon

Common lambsquarters cotyledon

Common mallow

Malva neglecta Wallr.
Malvaceae (Mallow family)

Life cycle
Spreading annual or biennial.

Leaves
Cotyledons are heart-shaped with three main veins. Leaves are alternate,
rounded with a heart-shaped base, palmately veined, hairy and found on long,
slender, hairy petioles. Margins are round-toothed and obscurely lobed.

Stems
Spreading and partly erect stems are branched from the base and up to
1 foot tall.

Flowers and fruit
Flowers have five white and purple-tinged petals; flowers are formed on stalks in the leaf axils. Fruit are capsules that resemble a button or cheese wheel. Each capsule contains 12 to 15 compartments; each compartment has one reddish brown to black, flattened, rounded seed with a notch.

Reproduction
Seeds and stem fragments.

Similar weeds
Venice mallow (Hibiscus trionum L.)
Differs by having leaves with three distinct, coarsely toothed lobes that may be further divided into as many as seven lobes; and pale yellow flowers with a purple base.