WOOLLY CUPGRASS, Eriochloo villosa (Thunb.) Kunth. 1, entire plant; 2, portion of stem, leaf, and raceme; 3, spikelet; 4, seed. Annual, reproducing by seed. Root system fibrous. Stems 3 to 5 feet (0.9 to 1.5 m) tall, erect but sometimes decumbent at base, lower portion often purplish, especially in young plants. Leaves dark green, covered with a fine pubescence, one leaf margin often distinctly crinkled. Inflorescence of several racemes, the rachises and pedicels very woolly; rachis narrow, with spikelets in 2 rows on one side. Seed varies in color from tan to brown to green, with bulbous base, large (to 3/16 inch or 4.5 mm long). Found on moist soils in corn, soybean, small grain, and forage crops.