Asteraceae
Bigflower agoseris
Agoseris grandiflora
- Family
- Asteraceae
- Genus
- Agoseris
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Common names
By language (1)
- English
- Bigflower agoseris
Synonyms
- Agoseris cinerea Greene
- Agoseris grandiflora var. intermedia (Greene) Jeps.
- Agoseris grandiflora var. leptophylla G.I.Baird
- Agoseris intermedia Greene
- Agoseris marshallii Greene
- Agoseris obtusifolia (Suksd.) Rydb.
- Agoseris plebeia Greene
- Macrorhynchus grandiflorus (Nutt.) Torr. & A.Gray
- Stylopappus grandiflorus Nutt.
- Troximon grandiflorum (Nutt.) A.Gray
- Troximon grandiflorum var. grandiflorum
- Troximon grandiflorum var. obtusifolium Suksd.
- Troximon marshallii Greene
- Troximon plebeium Greene
Flowers
- Flower colour
- yellow (USDA PLANTS Database)
Characteristics
- Growth habit
- Forb/herb
- Lifespan
- Perennial
- In the US and Canada
- Canada: native, Lower 48 states: native
Photos
Photo: Stickpen, CC0, from Wikimedia Commons 
Photo: Stickpen, CC0, from Wikimedia Commons 
Photo: Jim Morefield from Nevada, USA, CC BY-SA 2.0, from Wikimedia Commons
More in Agoseris
- Orange agoserisAgoseris aurantiacaAsteraceae
- Woolly goat chicoryAgoseris apargioidesAsteraceae
- Pale agoserisAgoseris glaucaAsteraceae
- Annual agoserisAgoseris heterophyllaAsteraceae
- Agoseris monticolaAsteraceae
- Steppe agoserisAgoseris parvifloraAsteraceae
- Spearleaf agoserisAgoseris retrorsaAsteraceae
- Agoseris hirsutaAsteraceae
- Agoseris chilensisAsteraceae
- Patagonian agoserisAgoseris coronopifoliaAsteraceae
- Tall agoserisAgoseris elataAsteraceae
- Agoseris laevigataAsteraceae
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.