Annual, monoecious, leafy succulent grass, 1-5 m high. Leaves alternate at the nodes, 30-150 x 5-15 cm, glabrous or pubescent, linear-lanceolate, acuminate; male inflorescence, a large terminal panicle up to 40 cm long, female inflorescences in axillary sheath cobs, ca. 30 cm in length; fruit a grain or caryopsis white, yellow, reddish or purple.
Annual monoecious herb 70 cm high. Leaves alternate, 7-12 cm long including petiole, base cordate or reniform, apex acute, 3-5 lobed and dentate, blades, scabrous, with appressed golden glandular hairs, triangular- orbicular 7-12 x 6-12 cm; inflorescence racemose; male heads globose, numerous florets, female head burrlike with hooked bracts, 2 flowers; Achene, 0.9-1.5cm linear, compressed, beaked, smooth.
Perennial herb, with trailing or ascending branches rooting at thenodes. Leaves opposite, sessile, elliptical to obovate, 2-12 cm x 1-6 cm, apex acute,cuneate at the base, marginsserrate-dentate often lobed; inflorescence a capitulum on axillary or terminal peduncles; ray florets bright yellow; achenes 5mm long, oblong to obovoid, compressed.
Tufted perennial grass with aromatic roots. Culms 1-2 m high. Leaves linear, 30-100 cm x 4-10 mm, margins scabrous, blade glabrous. Panicles long-pyramidal up to 20-35 cm long with many branches in several whorls, spikelets awnless, 4-5 mm long no bristles.
