Isoetes sinensis Palmer (1927:111 or 112)

Narrow quillwort

Taxonomy & Nomenclature

Conservation Status

Erroneously listed as possibly extinct (China Plant Specialist Group, 2004)

IUCN RedList status: Critically Endangered (Possibly Extinct)

The IUCN RedList assessment for this species stated that it is endemic to China and "thought by some to possibly even be extinct". In actuality it comprises two subspecies, the nominate and I. s. coreana, and ranges from China (Kang et al., 2005) to Korea (Takamiya, 2001) to Japan (Takamiya et al., 1994).

Distribution

China (Jiangsu, Anhui, Zhejiang), Korea & Japan

Biology & Ecology

Hypodigm

Media

References

Original scientific description:

Palmer, T. Chalkley. (1927). A Chinese Isoetes. American Fern Journal 17(4): 111-113. https://doi.org/10.2307/1544551

Other references:

China Plant Specialist Group. (2004). Isoetes sinensis. The IUCN Red List of Threatened Species 2004: e.T46615A11070430. https://dx.doi.org/10.2305/IUCN.UK.2004.RLTS.T46615A11070430.en. Accessed on 07 July 2022.

Dong, S., Zuo, Z., Yan, Y. and Xiang, J. (2017). Red list assessment of lycophytes and ferns in China. Biodiversity Science 25(7): 765-773.

Ebihara, Atsushi, Fraser-Jenkins, Christopher Roy, Parris, Barbara S., Zhang, Xian-Chun, Yang, Yue-Hong, Chiou, Wen-Liang, Chang, Ho-Ming, Lindsay, Stuart, Middleton, David, Kato, Masahiro, Praptosuwiryo, Titien Ngatinem, Amoroso, Victor B., Barcelona, Julie F., Ranil, Rajapaksha Haddokara Gedara, Park, Chan-Ho, Murakami, Noriaki and Hoya, Akihiko (2012). Rare and Threatened Pteridophytes of Asia 1. An Enumeration of Narrowly Distributed Taxa. Bulletin of the National Museum of Nature and Science, Series B. 38(3): 93-119.

Hassler, Michael. (2004-2023). World Ferns. Synonymic Checklist and Distribution of Ferns and Lycophytes of the World. Version 17.2; last update Oct. 18th, 2023. Available at: https://www.worldplants.de/ferns/ [Accessed 21 October 2023]

Kang, Ming, Ye, Qiang and Huang, Hongwen (2005). Genetic consequence of restricted habitat and population decline in endangered Isoetes sinensis (Isoetaceae). Annals of Botany 96(7): 1265-1274. https://doi.org/10.1093%2Faob%2Fmci277

Yanqing Li, Xi Chen, Xiaoyan Lin, Yufeng Gu, Baodong Liu and Rongjing Zhang. (2023). Complete chloroplast genome of Isoetes orientalis (Isoetaceae), an endangered quillwort from China. Mitochondrial DNA Part B 8(3): 342-346. https://doi.org/10.1080/23802359.2023.2183070

Takamiya, M. (2001). Isoetes sinensis var. sinensis in Korea (Isoetaceae: Pteridophyta). Fern Gazette 16: 169-177.

Takamiya, M., Watanabe, M. and Ono, K. (1994). Biosystematic studies on the genus Isoetes (Isoetaceae) in Japan. I. Variation of somatic chromosome numbers. Journal of Plant Research 107: 289-297.

Troìa, Angelo. (2001). The genus Isoëtes L. (Lycophyta, Isoetaceae): synthesis of karyological data / Il genere Isoëtes L. (Lycophyta, Isoëtaceae): sintesi dei dati cariologia. Webbia 56(1): 201-218. https://doi.org/10.1080/00837792.2001.10670712

Troìa, Angelo, Pereira, Jovani B .S., Kim, Changkyun and Taylor, W. Carl. (2016). The genus Isoetes (Isoetaceae): a provisional checklist of the accepted and unresolved taxa. Phytotaxa 277(2): 101-145. https://doi.org/10.11646/phytotaxa.277.2.1

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