Amaranth (scientific name: Portulaca oleracea L.) Annual herb, glabrous throughout. Stem procumbent, ambulatory spreading, branches light green or dark reddish. Leaves alternate, leaf blade flattened, plump, horse-toothed, dark green above, light green or dark reddish below; petiole stout and short. Flowers sessile, blooming at noon; bracts leaflike; sepals green, galeate; petals yellow, obovate; stamens anthers yellow; ovary glabrous. Capsule ovoid; seeds minute, obliquely spherical, black-brown, glossy. Fl. May-Aug, fr. June-Sep.

Produced all over north and south China. Prefer fertile soil, drought-resistant and flood-resistant, strong living force, born in vegetable gardens, farmland, roadsides, as a common weed in the field. It is a common weed in fields. It is widely distributed in temperate and tropical areas all over the world. The whole grass for medicinal purposes, there are heat and dampness, detoxification and swelling, anti-inflammatory, quenching thirst, diuretic effect; seeds for eyesight; can also be used as veterinary drugs and pesticides; young stems and leaves can be used as a vegetable, acidic, but also very good fodder.