Asteraceae
Spearleaf agoseris
Agoseris retrorsa
- Family
- Asteraceae
- Genus
- Agoseris
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Common names
By language (1)
- English
- Spearleaf agoseris
Synonyms
- Macrorhynchus angustifolius Kellogg
- Macrorhynchus retrorsus Benth.
Flowers
- In flower
- April to May (from 138 flowering iNaturalist observations worldwide)
Characteristics
- Growth habit
- Forb/herb
- Lifespan
- Perennial
- In the US and Canada
- Lower 48 states: native
Photos
FlowerPhoto: desertnaturalist, CC BY 4.0, from iNaturalist 
FlowerPhoto: Matt Berger, CC BY 4.0, from iNaturalist 
FlowerPhoto: George Williams, CC BY 4.0, from iNaturalist 
FlowerPhoto: Arvel Hernandez, CC BY 4.0, from iNaturalist 
Photo: velodrome, CC BY 4.0, from iNaturalist 
Photo: tomhilton, CC BY 2.0, from Wikimedia Commons 
Photo: Steve Matson, CC BY 4.0, from iNaturalist 
Photo: Cricket Raspet, CC BY 4.0, from iNaturalist 
Photo: James Fowler, CC BY 4.0, from iNaturalist 
Photo: Bruce Homer-Smith, CC BY 4.0, from iNaturalist 
Photo: Dustin VanOverbeke, CC BY 4.0, from iNaturalist 
Photo: Tom Gulya, CC0, from iNaturalist
More in Agoseris
- Orange agoserisAgoseris aurantiacaAsteraceae
- Woolly goat chicoryAgoseris apargioidesAsteraceae
- Pale agoserisAgoseris glaucaAsteraceae
- Annual agoserisAgoseris heterophyllaAsteraceae
- Agoseris monticolaAsteraceae
- Steppe agoserisAgoseris parvifloraAsteraceae
- Spearleaf agoserisAgoseris retrorsaAsteraceae
- Bigflower agoserisAgoseris grandifloraAsteraceae
- Agoseris hirsutaAsteraceae
- Agoseris chilensisAsteraceae
- Patagonian agoserisAgoseris coronopifoliaAsteraceae
- Tall agoserisAgoseris elataAsteraceae
Sources: classification, synonyms from World Flora Online Plant List (2026-06, CC0 1.0); common names, US characteristics from USDA PLANTS Database (2025-05-29, CC0 1.0). About our plant data.