IPM1007, Revised November 2009
Summer annual broadleaf
A summer annual weed of cultivated agricultural crops that may reach as much as 6 feet in height. Seedlings have cotyledons that are rounded, much more so than the subsequent egg-shaped leaflets. Distinctive veins (3 to 5) also occur on the cotyledons. Stems are erect, branched, and without hairs. Mature plants have leaves that are arranged alternately along the stem, which consist of four to six leaflets that are arranged oppositely from one another. Individual leaflets are egg shaped, with the broadest end above the middle. Flowers are yellow and plants eventually produce long, slender curved seedpods that contain many brown, angular seeds.
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