Isoetes baodongii (Isoetaceae), a New Basic Diploid Quillwort from China

Yi-Jun Lu; Yu-Feng Gu; Yue-Hong Yan

doi:10.3417/2021680

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Yi-Jun Lu,^1,* Yu-Feng Gu,^2,3,* Yue-Hong Yan^2,**

¹Zhejiang University City College, Hangzhou, 310015, People's Republic of China.
²Key Laboratory of National Forestry and Grassland Administration for Orchid Conservation and Utilization, Shenzhen, 518114, People's Republic of China; The Orchid Conservation & Research Center of Shenzhen, Shenzhen, 518114, People's Republic of Chin
³College of Life Science and Technology, Harbin Normal University, Harbin, 150025, People's Republic of China.

^*These authors contributed equally to this study.
^**Author for correspondence: yhyan@sibs.ac.cn

Abstract

Isoetes baodongii Y. F. Gu, Y. H. Yan & Yi J. Lu (Isoetaceae) is here described as a newly discovered, rare and endangered species of quillwort from eastern China. It has a basic diploid chromosome count of 2n = 22. Isoetes baodongii is similar to I. sinensis T. C. Palmer in its overall appearance and was previously misidentified as such. It differs from I. sinensis in its chromosome number and in megaspore ornamentation. In I. baodongii, both the proximal surface and distal surface of the megaspore are echinato-cristate, whereas in I. sinensis the proximal surface is echinate and the distal surface echinato-cristate. Microspores of I. baodongii have echinate ornamentation.

Citation Download Citation

Yi-Jun Lu, Yu-Feng Gu, and Yue-Hong Yan "Isoetes baodongii (Isoetaceae), a New Basic Diploid Quillwort from China," Novon: A Journal for Botanical Nomenclature 29(1), 206-210, (5 October 2021). https://doi.org/10.3417/2021680

Published: 5 October 2021

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