Name: Prostrate Knotweed (Polygonum aviculare)
Other names: common knotgrass, birdweed, pigweed, and lowgrass
Higher classification: Knotweed
Clades: Angiosperms, Eudicots
Description: Common knotgrass is an annual herb with a semi-erect stem that may grow from 10 to 40 cm (4 to 16 in) high. The leaves are hairless and short-stalked. They are longish-elliptical with short stalks and rounded bases; the upper ones are few and are linear and stalkless. The stipules are fused into a stem-enclosing, translucent sheath known as an ochrea that is membranous and silvery. Prostrate Knotweed is an annual found in fields and wasteland, with white flowers from June to October. The flowers are regular, green with white or pink margins. Each has five perianth segments, overlapping at the base, five to eight stamens and three fused carpels. The fruit is a dark brown, three-edged nut. The seeds need light to germinate which is why this plant appears in disturbed soil in locations where its seeds may have lain dormant for years.
Distribution: It is widespread across many countries in temperate regions, apparently native to Eurasia and North America, naturalized in temperate parts of the Southern Hemisphere.
Usage: It formed a traditional ingredient in porridge consumed by Germanic peoples of western Europe, and has been found in numerous autopsies of peat bodies, including the Tollund Man. In Vietnam, where it is called rau đắng, it is widely used to prepare soup and hot pot, particularly in the southern region.
Dymadex's entries on plants, living organism of the kind exemplified by trees, shrubs, herbs, grasses, ferns, and mosses.
Hello \(^.^)/ Thank you for Visiting. Please check these out too: