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Two new species of Isoetes (Isoetaceae) from Jeju Island, South Korea

Publication Type:Journal Article
Year of Publication:2008
Authors:H. - K. Choi, Jung, J., Kim, C.
Journal:Journal of Plant Biology
Pagination:354 - 358
Date Published:2008///
Keywords:Isoetes, Isoetes hallasanensis, Isoetes jejuensis, Jeju Island, New species

We name and describe two new species, Isoetes jejuensis and I. hallasanensis, from Jeju Island, South Korea. These taxa are compared with related species in East Asia, including I. coreana and I. sinensis. The rugulate megaspore ornamentation of I. jejuensis differs from those other Isoetes species. Furthermore, I. hallasanensis varies from I. asiatica in its microspore ornamentation and chromosome number, although both species have an echinate megaspore ornamentation. These new species are tetraploid (2n = 44), whereas I. coreana is hexaploid (2n = 66).

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