Asteraceae
Threadleaf ragwort
Senecio flaccidus
- Family
- Asteraceae
- Genus
- Senecio
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Common names
By language (2)
- English
- Threadleaf ragwort
- nv
- Hosh bee yildéhé
Synonyms
- Senecio douglasii subsp. longilobus (Benth.) W.A.Weber
- Senecio douglasii var. jamesii (Torr. & A.Gray) Ediger ex Correll & M.C.Johnst.
- Senecio douglasii var. longilobus (Benth.) L.D.Benson
- Senecio filifolius Nutt.
- Senecio filifolius var. filifolius
- Senecio flaccidus var. flaccidus
- Senecio longilobus Benth.
Characteristics
- Growth habit
- Forb/herb, Subshrub
- Lifespan
- Perennial
- In the US and Canada
- Lower 48 states: native
Photos

Photo: User:Stan Shebs, CC BY-SA 3.0, from Wikimedia Commons 
Photo: User:Stan Shebs, CC BY-SA 3.0, from Wikimedia Commons Photo: Sue Schwab, CC BY-SA 4.0, from Pl@ntNet via GBIF Photo: elm1161, CC BY-SA 4.0, from Pl@ntNet via GBIF 
Photo: Patrick Alexander from Las Cruces, NM, CC0, from Wikimedia Commons Photo: Lyle Winterton, CC BY-SA 4.0, from Pl@ntNet via GBIF 
Photo: Patrick Alexander from Las Cruces, NM, CC0, from Wikimedia Commons Photo: LaRita Desimpel, CC BY-SA 4.0, from Pl@ntNet via GBIF 
Photo: Patrick Alexander from Las Cruces, NM, CC0, from Wikimedia Commons Photo: Riley L, CC BY-SA 4.0, from Pl@ntNet via GBIF 
Photo: Patrick Alexander from Las Cruces, NM, CC0, from Wikimedia Commons Photo: Hightower Melody, CC BY-SA 4.0, from Pl@ntNet via GBIF
More in Senecio
- String of pearlsSenecio rowleyanusAsteraceae
- GroundselSenecio vulgarisAsteraceae
- Woodland ragwortSenecio sylvaticusAsteraceae
- Narrow-leaved ragwortSenecio inaequidensAsteraceae
- Sticky ragwortSenecio viscosusAsteraceae
- Creeping groundselSenecio angulatusAsteraceae
- Wood ragwortSenecio ovatusAsteraceae
- Saracen's comfreySenecio sarracenicusAsteraceae
- Coastal ragwortSenecio leucanthemifoliusAsteraceae
- Senecio nemorensisAsteraceae
- Oxford ragwortSenecio squalidusAsteraceae
- French groundselSenecio gallicusAsteraceae
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.