Cirsium kamtschaticum

Cirsium kamtschaticum, the Kamchatka thistle, is an Alaskan and East Asian species of plants in the thistle tribe within the sunflower family. The species is found in eastern Russia (Kamchatka Peninsula,[2] Sakhalin Island and the Kuril Islands), and on certain islands of the North Pacific: the Aleutian Islands of Alaska and Hokkaido Island in northern Japan.[3][4]

Cirsium kamtschaticum
Scientific classification
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Eudicots
Clade: Asterids
Order: Asterales
Family: Asteraceae
Genus: Cirsium
Species:
C. kamtschaticum
Binomial name
Cirsium kamtschaticum
Synonyms[1]
  • Cirsium boreale Kitam.
  • Cirsium weyrichii Maxim.
  • Cnicus kamtschaticus (Ledeb. ex DC.) Maxim.
  • Cnicus korsakoviensis (H.Lév. & Vaniot) H.Lév. & Vaniot
  • Cnicus weyrichii (Maxim.) Maxim.

Cirsium kamtschaticum is a biennial or perennial herb up to 200 cm (80 inches) tall, with a thick underground rhizome. Leaves are up to 40 cm (16 inches) long with thin, bristly spines along the edges. There are a few flower heads, each head with pink or purple disc florets but no ray florets.[3]

References
  1. The Plant List, Cirsium kamtschaticum Ledeb. ex DC.
  2. Candolle, Augustin Pyramus de 1838. Prodromus Systematis Naturalis Regni Vegetabilis 6: 644 in Latin
  3. Flora of North America, Kamchatka thistle, Cirsium kamtschaticum Ledebour ex de Candolle
  4. Biota of North America Program 2014 state-level distribution map


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