Amaranthaceae
Watson's amaranth
Amaranthus watsonii
- Family
- Amaranthaceae
- Genus
- Amaranthus
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Common names
By language (1)
- English
- Watson's amaranth, Torrey's amaranthus, Sarratia berlandieri var. emarginata
Synonyms
- Amaranthus torreyi (A.Gray) Benth. ex S.Watson
- Amaranthus torreyi f. prostratus Farw.
- Amaranthus torreyi var. suffruticosus Uline & W.L.Bray
- Amblogyna torreyi A.Gray
Characteristics
- Growth habit
- Forb/herb
- Lifespan
- Annual
- In the US and Canada
- Lower 48 states: native
Photos

FlowerPhoto: Jose Luis Leon de la Luz, CC BY 4.0, from iNaturalist 
LeavesPhoto: Adrian Bojorquez, CC BY-SA 4.0, from iNaturalist 
Photo: Sula Vanderplank, CC BY 4.0, from iNaturalist 
Photo: Sue Carnahan, CC BY 4.0, from iNaturalist 
Photo: Abraham Sánchez Romero, CC BY 4.0, from iNaturalist 
Photo: Sula Vanderplank, CC BY 4.0, from iNaturalist 
Photo: Sula Vanderplank, CC BY 4.0, from iNaturalist 
Photo: Erick Vélez Sánchez, CC BY 4.0, from iNaturalist 
Photo: Jose Luis Leon de la Luz, CC BY 4.0, from iNaturalist 
Photo: Abraham Sánchez Romero, CC BY 4.0, from iNaturalist
More in Amaranthus
- Common amaranthAmaranthus retroflexusAmaranthaceae
- Purple amaranthAmaranthus caudatusAmaranthaceae
- Spiny amaranthAmaranthus spinosusAmaranthaceae
- Purple amaranthAmaranthus blitumAmaranthaceae
- Slender amaranthAmaranthus viridisAmaranthaceae
- Red amaranthAmaranthus cruentusAmaranthaceae
- Prostrate pigweedAmaranthus albusAmaranthaceae
- Joseph's-coatAmaranthus tricolorAmaranthaceae
- Mat amaranthAmaranthus blitoidesAmaranthaceae
- Slim amaranthAmaranthus hybridusAmaranthaceae
- Prince-of-Wales featherAmaranthus hypochondriacusAmaranthaceae
- Spleen amaranthAmaranthus dubiusAmaranthaceae
Sources: classification, synonyms from World Flora Online Plant List (2026-06, CC0 1.0); common names, popularity from Wikidata (2026-10-26, CC0 1.0); common names, US characteristics from USDA PLANTS Database (2025-05-29, CC0 1.0). About our plant data.