or perennial succulent herbs. Leaves often alternate, sometimes opposite or
whorled, entire, exstipulate. Spikes terminal or axillary, solitary or
fascicled. Flowers minute, bisexual, sessile, or sunk in the rachis, often
whorled, bracteate. Sepals and petals absent. Stamens 2, very short. Ovary
obtuse, acute or beaked, 1-celled, stigmas usually penicillate. Fruit
indehiscent. Seeds minute, with membranous testa.