Asteraceae
Stemless thistle
Onopordum acaulon
- Family
- Asteraceae
- Genus
- Onopordum
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Common names
By language (2)
- Catalan
- Cardassa blanca
- English
- Stemless thistle
Synonyms
- Onopordum acaulon subsp. uniflorum (Cav.) Franco
- Onopordum acaulon var. acaulon
- Onopordum acaulon var. orbiculatum (Loscos) Pau
- Onopordum uniflorum Cav.
Characteristics
- Growth habit
- Forb/herb
- Lifespan
- Annual, Biennial
Photos
Photo: Isidre blanc, CC BY-SA 4.0, from Wikimedia Commons 
Photo: Isidre blanc, CC BY-SA 4.0, from Wikimedia Commons 
Photo: Dinkum, CC BY-SA 3.0, from Wikimedia Commons 
Photo: A. Dobignard, CC0, from Wikimedia Commons 
Photo: A. Dobignard, CC0, from Wikimedia Commons 
Photo: Leonora, CC BY-SA 4.0, from Wikimedia Commons
More in Onopordum
- Cotton thistleOnopordum acanthiumAsteraceae
- Illyrian cottonthistleOnopordum illyricumAsteraceae
- Bull cottonthistleOnopordum tauricumAsteraceae
- Onopordum macracanthumAsteraceae
- Onopordum nervosumAsteraceae
- Onopordum dissectumAsteraceae
- Onopordum bracteatumAsteraceae
- Onopordum corymbosumAsteraceae
- Onopordum algerienseAsteraceae
- Onopordum arenariumAsteraceae
- Onopordum armenumAsteraceae
- Onopordum blancheanumAsteraceae
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.