Asteraceae
Kamchatka thistle
Cirsium kamtschaticum
- Family
- Asteraceae
- Genus
- Cirsium
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Common names
By language (1)
- English
- Kamchatka thistle
Synonyms
- Cirsium kamtschaticum subsp. boreale (Kitam.) Kitam.
- Cirsium kamtschaticum subsp. kamtschaticum
- Cirsium kamtschaticum subsp. weyrichii (Maxim.) Vorosch.
- Cirsium kamtschaticum var. alpinum (Koidz. ex Kitam.) T.Shimizu & New Alp.Fl.Jap.
- Cirsium kamtschaticum var. boreale (Kitam.) Tatew.
- Cirsium kamtschaticum var. kamtschaticum
- Cirsium kamtschaticum var. weyrichii (Maxim.) Herder
- Cirsium pectinellum var. alpinum Koidz. ex Kitam.
- Cirsium weyrichii Maxim.
- Cnicus kamtschaticus Maxim.
- Cnicus kamtschaticus var. kamtschaticus
- Cnicus korsakoviensis H.Lév. & Vaniot
- Cnicus weyrichii Maxim.
Flowers
- In flower
- July to August (from 16 flowering iNaturalist observations worldwide)
Characteristics
- Growth habit
- Forb/herb
- Lifespan
- Perennial
- In the US and Canada
- Alaska: native
Photos
Photo: Pavel Smirnov, CC BY 4.0, from Wikimedia Commons 
Photo: Георгий Виноградов, CC BY 4.0, from Wikimedia Commons
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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.