BRISTLY FOXTAIL, Setaria verticillata (L.) Beauv. 1, lower part of plant; 2, seeds; 3, upper part of stem with panicle. Annual, reproducing by seeds. Stems 1 to 4 feet (0.3 to 1.2 m) tall, erect but branching more than those of other foxtails. Panicle dense, 2 to 4 inches (5 to 10 cm) long, with 1 bristle at the base of each spikelet, rarely 2 or 3. Bristles barbed, causing seed heads to be carried great distances by man and animals. Seed greenish, similar to that of green foxtail in shape and size. Found in gardens, orchards and other noncultivated areas as well as in some cultivated fields. Irritating to humans and animals because of sticky habit.