amaranthus retroflexus

      Amaranthus retroflexus GudangMovies21 Rebahinxxi LK21

      Amaranthus retroflexus is a species of flowering plant in the family Amaranthaceae with several common names, including red-root amaranth, redroot pigweed, red-rooted pigweed, common amaranth, pigweed amaranth, and common tumbleweed.
      Outside of its native range, it is considered a weed. Although it may be toxic if eaten uncooked, or in excess by livestock, it can be consumed as a vegetable or as fodder.


      Description


      Amaranthus retroflexus, true to one of its common names, forms a tumbleweed. It is an erect, annual herb growing to 1 m (3+1⁄2 ft). The leaves are nearly 15 cm (6 in) long on large individuals, the ones higher on the stem having a lance shape and those lower on the plant diamond or oval in shape. The plant is monoecious, with individuals bearing both male and female flowers. The inflorescence is a large, dense cluster of flowers interspersed with spiny green bracts. The fruit is a capsule less than 2 mm (1⁄16 in) long with a "lid" which opens to reveal a tiny black seed.


      Distribution and habitat


      It may be native to the Neotropics or Central and Eastern North America, but is widespread as an introduced species on most continents in a great number of habitats.
      One common name is "pigweed" because it grows where hogs are pasture-fed.


      As a weed


      A. retroflexus is a weed outside its native range and has developed resistance against fomesafen in Northeast China.


      Potential toxicity


      No species of genus Amaranthus is known to be poisonous to humans, but the leaves of A. retroflexus contain oxalic acid and may contain nitrates if grown in nitrate-rich soils.
      Like many other species of Amaranthus, this plant may be harmful and even deadly when fed to cattle and pigs in large amounts over several days. Such forage may cause fatal nephrotoxicity, presumably because of its high oxalate content. Other symptoms, such as bloat or methylglobineamia in the most severe cases, might reflect its high nitrate content.


      Uses




      = Culinary

      =
      This plant is eaten as a vegetable in different places of the world. The water should be discarded after boiling due to the presence of oxalic acid and possibly nitrates. The young shoots and leaves can be eaten raw. The leaves are high in calcium, iron, protein, and phosphorus.
      A. retroflexus was used for a multitude of food and medicinal purposes by many Native American groups in the western United States. It is among the species consumed as a vegetable in Mexican markets as Quelite quintonil.
      It is used in the Indian state of Kerala to prepare a popular dish known as thoran by combining the finely cut leaves (cheera ) with grated coconut, chili peppers, garlic, turmeric and other ingredients.
      The seeds are edible raw or toasted, and can be ground into flour and used for bread, hot cereal, or as a thickener.


      = As fodder

      =
      When supplied in moderation (circumventing its toxicity to livestock), it is regarded as an exceptionally nutritious fodder.


      References




      External links



      Media related to Amaranthus retroflexus (category) at Wikimedia Commons
      Jepson Manual Treatment
      Amaranthus reflexus in the CalPhotos photo database, University of California, Berkeley
      Amaranthus retroflexus L. Medicinal Plant Images Database (School of Chinese Medicine, Hong Kong Baptist University) (in Chinese) (in English)
      "Amaranthus retroflexus". Plants for a Future.

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    Amaranthus retroflexus - Wikipedia

    Amaranthus retroflexus is a species of flowering plant in the family Amaranthaceae with several common names, including red-root amaranth, redroot pigweed, red-rooted pigweed, common amaranth, pigweed amaranth, and common tumbleweed.

    Redroot Pigweed, a Humble and Underrated Wild Edible

    Redroot pigweed (Amaranthus retroflexus), also known as pigweed amaranth, is a common summer annual herb. This plant is native to the tropical Americas, but it has been introduced to also every continent in the world.

    Amaranthus retroflexus (Redroot Pigweed) - Minnesota Wildflowers

    Tiny flowers are tightly packed in small clusters (glomerules) in a spike-like arrangement at the tips of branching stems and arising from leaf axils, with a few to several flowers in a glomerule. The spikes are thick, dense, relatively short, erect to …

    Amaranthus retroflexus - North Carolina Extension Gardener …

    Numerous, small, green monoecious flowers with prominent bracts that are longer than their tepals. Flowers clustered in spikes on panicles. The leaves are smaller in the upper portion of the central stem. Each leaf base is rounded, the tip can be acute, obtuse, emarginate, or rounded..

    Amaranthus retroflexus - US Forest Service

    SPECIES: Amaranthus retroflexus GENERAL DISTRIBUTION : Rough pigweed is found throughout North America, from Canada to Mexico, and from the Atlantic to the Pacific coasts. It is also found throughout much of the rest of the world, …

    Common Amaranth (Amaranthus Retroflexus) Growing & Care …

    Plant Characteristics: Amaranthus retroflexus is known for its upright, bushy growth and green, ovate leaves. It produces dense clusters of small green flowers in summer. Notable for its reddish taproot, it's often considered a weed in gardens and crops.

    Amaranthus retroflexus — red-rooted amaranth - Go Botany

    Red-rooted amaranth is native to North America and introduced nearly worldwide. In New England it is mainly found in human-disturbed, sandy soils. The young leaves and seeds are edible, and were used for food by many Native American tribes. Anthropogenic (man-made or disturbed habitats), meadows and fields, shores of rivers or lakes.

    Amaranthus retroflexus (redroot pigweed) | CABI Compendium

    Nov 16, 2021 · This datasheet on Amaranthus retroflexus covers Identity, Overview, Associated Diseases, Pests or Pathogens, Distribution, Hosts/Species Affected, Diagnosis, Biology & Ecology, Natural Enemies, Impacts, Uses, Prevention/Control, Management, Further Information.

    Weeds: Redroot pigweed (Rough pigweed) – Amaranthus retroflexus

    Jun 22, 2024 · Redroot pigweed is a coarse, erect plant, growing two to three feet tall. The lower stems and branches and the upper portion of the taproot are frequently red or striped with red. Leaves are alternate, with long petioles and distinct veins. Branches or small flower clusters typically occur in the leaf axils.

    Amaranthus retroflexus Pigweed, Redroot amaranth, Wild Beet …

    Amaranthus retroflexus is a ANNUAL growing to 0.9 m (3ft). See above for USDA hardiness. It is hardy to UK zone 4 and is frost tender. It is in flower from July to September, and the seeds ripen from August to October.