| Amaranthus retroflexus |
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| Scientific classification |
| Kingdom: |
Plantae |
| Clade: |
Tracheophytes |
| Clade: |
Angiosperms |
| Clade: |
Eudicots |
| Order: |
Caryophyllales |
| Family: |
Amaranthaceae |
| Genus: |
Amaranthus |
| Species: |
A. retroflexus |
| Binomial name |
Amaranthus retroflexus
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| Synonyms |
- Amaranthus bulgaricus Kov.
- Amaranthus bullatus Besser ex Spreng.
- Amaranthus chlorostachys Willk.
- Amaranthus curvifolius Spreng.
- Amaranthus delilei Richt. & Loret
- Amaranthus johnstonii Kov.
- Amaranthus recurvatus Desf.
- Amaranthus retroflexus var. delilei (Richt. & Loret) Thell.
- Amaranthus retroflexus subsp. delilei (Richt. & Loret) Tzvelev
- Amaranthus retroflexus var. genuinus (L.) Thell. ex Probst
- Amaranthus retroflexus var. rubricaulis Thell.
- Amaranthus retroflexus f. rubricaulis Thell. ex Probst
- Amaranthus retroflexus var. salicifolius lI.M.Johnst.
- Amaranthus rigidus Schult. ex Steud.
- Amaranthus spicatus Lam.
- Amaranthus strictus Ten.
- Amaranthus tricolor L.
- Galliaria retroflexa (L.) Nieuwl.
- Galliaria scabra Bubani
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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.