Cotyledons are smooth, waxy and lanceolate and may be protruding from the bur. True leaves are alternate and triangular to ovate with a rough, sandpapery feel. To top Grass Key Top of page 20. Cotyledons smooth and lanceolate. Hypocotyl is often hairy.
True leaves are smooth and alternate with petioles.
Seedling has an unpleasant odor when crushed. To top Grass Key Top of page 21. Cotyledons linear and hairless. True leaves are opposite with each pair rotated around the stem 90 degrees from the previous pair. Leaves are wedge- shaped, tapering toward the base.