Cirsium toyoshimae
Appearance
Cirsium toyoshimae | |
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Scientific classification ![]() | |
Kingdom: | Plantae |
Clade: | Tracheophytes |
Clade: | Angiosperms |
Clade: | Eudicots |
Clade: | Asterids |
Order: | Asterales |
Family: | Asteraceae |
Genus: | Cirsium |
Species: | †C. toyoshimae
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Binomial name | |
†Cirsium toyoshimae |
Cirsium toyoshimae (トヨシマアザミ, Toyoshima-azami) is an extinct species of thistle in the family Asteraceae that was endemic to the Bonin Islands of Tōkyō Metropolis, Japan.[2][3]
Taxonomy
The species was first described by Japanese botanist Gen-ichi Koidzumi in 1919.[2]
Description
Cirsium toyoshimae had pale purple flowers and soft spines and was somewhat smaller than the extant Cirsium boninense.[3][4] It used to grow in wooded areas near the coast.[4]
Conservation status
Cirsium toyoshimae is classed as extinct on the Ministry of the Environment Red List.[1][5]
References
- ^ a b Ministry of the Environment, ed. (2015). レッドデータブック2014 —日本の絶滅のおそれのある野生生物— 8 植物I(維管束植物) [Red Data Book 2014 — Threatened Wildlife of Japan — Volume 8, Vascular Plants] (PDF) (in Japanese). Gyōsei Corporation. p. 8. ISBN 978-4-324-09902-5.
- ^ a b c Koidzumi, G. (1919). "Contributiones ad Floram Asiae Orientalis". The Botanical Magazine (in Latin). 33 (389): 110–122 [115]. ISSN 0006-808X.
- ^ a b トヨシマアザミ [Cirsium toyoshimae] (in Japanese). National Museum of Nature and Science. Retrieved 7 May 2022.
- ^ a b トヨシマアザミ [Cirsium toyoshimae] (in Japanese). Tokyo Metropolitan Government. Retrieved 7 May 2022.
- ^ 維管束植物 [Vascular Plants] (in Japanese). Ministry of the Environment. 27 March 2020. Retrieved 7 May 2022.