Asteraceae
Whitestem paperflower
Psilostrophe cooperi
- Family
- Asteraceae
- Genus
- Psilostrophe
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Common names
By language (1)
- English
- Whitestem paperflower, Cooper's paper daisy
Synonyms
- Riddellia cooperi A.Gray
Characteristics
- Growth habit
- Forb/herb, Subshrub
- Lifespan
- Perennial
- In the US and Canada
- Lower 48 states: native
Photos

FlowerPhoto: Melanie J. Davis, CC BY 4.0, from iNaturalist 
FlowerPhoto: Stephanie Taylor, CC0, from iNaturalist 
FlowerPhoto: CK2AZ, CC BY 4.0, from iNaturalist 
FlowerPhoto: CK2AZ, CC BY 4.0, from iNaturalist 
Photo: Stan Shebs, CC BY-SA 3.0, from Wikimedia Commons 
Photo: Cindy Bell, CC BY 4.0, from iNaturalist 
Photo: Stan Shebs, CC BY-SA 3.0, from Wikimedia Commons Photo: paddy_28, CC BY-SA 4.0, from Pl@ntNet via GBIF 
Photo: Stan Shebs, CC BY-SA 3.0, from Wikimedia Commons Photo: Thomas Binder, CC BY-SA 4.0, from Pl@ntNet via GBIF 
Photo: Kate Crowell Walker, CC BY 4.0, from iNaturalist 
Photo: John Rusk from Berkeley, CA, United States of America, CC BY 2.0, from Wikimedia Commons
More in Psilostrophe
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.