HYPP-A Unité de Malherbologie & Agronomie
Weed Science & Agronomy

Bayer Code : amach

Scientific name: Amaranthus hybridus L.

Synonym(s) of Sc. name: Amaranthus hypochondriacus L., Amaranthus patulus Bertoloni , Amaranthus powelli S.

Classification: Amaranthaceae, Dicotyledonous

Common name: green amaranth

Synonym(s) of Common name:

Name per country: DE : Bastard-Amarant ; ES : amaranto hibrido ; FR : amarante hybride ; IT : amaranto a spiga verde ; PT : bredo ; EN : green amaranth ;

Biological type: Annual

Seed snapshot Seed:


Seedling snapshot Seedling:

- Cotyledons elliptical, with rounded tip, more or less petiolate.

- Entire leaves, elliptical to ovate, with entire margin.

Adult plant snapshotAdult plant snapshot Adult plant:

- Height: 15-100 cm.

- Stem erect, palmate, only the upper part is slightly hairy.

- Leaves ovate, rhomboid, with plain margin, more or less glabrous. Inflorescence in long spike, elongated, spiciform, often branched mucronate, sharp and pointed. Perianth formed of 5 oblong pieces, lanceolate and finely acuminate.

- Fruit slightly wrinkled and dehiscent

- Triazine resistant populations exist in France, U.S.A., Sweden, Hungary, Italy, Israel, Spain, Canada.

- Risk of confusion with Amaranthus cruentus L., Amaranthus bouchonii Thell.

- Biological type: annual.

Mistake with: Amaranthus cruentus , Amaranthus bouchonii

Ecological profile (click on flags): Germany   Rare     Spain  Present     France  Present     Italy  Present     Portugal  Present    

Return INRA  Return INRA-Dijon  Return Weed Science & Agronomy Unit  Return HYPP-A

Copyright © 2000-2001 INRA, all rights reserved ; J.-P. Lonchamp, Nov. 2000
http://www.dijon.inra.fr/bga/hyppa/hyppa-a/amach_ah.htm ,