Tumble Pigweed

Tumble pigweed has a waxy appearance, alternate wavy leaves and smooth stems.  

At maturity, the entire plant breaks at the soil surface and "tumbles," scattering seed and accumulating along fencerows and other barriers.

Seed.  Seed are round, distinctly flattened with a dark glossy shine.  Diameter is approximately 1.0 mm.

Life cycle: summer annual.