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]
| Cirsium toyoshimae | |
|---|---|
Scientific classification  | |
| Kingdom: | Plantae |
| Clade: | Tracheophytes |
| Clade: | Angiosperms |
| Clade: | Eudicots |
| Clade: | Asterids |
| Order: | Asterales |
| Family: | Asteraceae |
| Genus: | Cirsium |
| Species: | †C. toyoshimae |
| Binomial name | |
| †Cirsium toyoshimae | |
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
- 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.
- Koidzumi, G. (1919). "Contributiones ad Floram Asiae Orientalis". The Botanical Magazine (in Latin). 33 (389): 110–122 [115]. ISSN 0006-808X.
- トヨシマアザミ [Cirsium toyoshimae] (in Japanese). National Museum of Nature and Science. Retrieved 7 May 2022.
- 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.
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