Research Paper

A taxonomic revision on Isotrema (Aristolochiaceae) in Taiwan, including one new species

Chang-Tse Lu, Chun-Lan Yang, Yu-long Hung, Po-Hao Chen, Jenn-Che Wang

Published on: 15 July 2022

Page: 391 - 407

DOI: 10.6165/tai.2022.67.391

PDF Download pdf | Appendix

2022 vol.67 no.3 pp.391-407


The genus Isotrema (Aristolochiaceae) in East Asia had been intensely revised in the recent decade. However, the classification of Taiwanese Isotrema has not been reviewed since 1996. In current study, we examine the habit, leaf shape, and flower morphology and conducted morphometrical analyses in order to revise the classification of Taiwanese Isotrema. As a result, we recognized five species in Taiwan, including one new species, I. pahsienshanianum. Additionally, I. hohuanense, an overlooked species, which was omitted from the Flora of Taiwan is recovered.

Keyword: Aristolochiaceae, Isotrema hohuanense, I. pahsienshanianum, Taiwan, taxonomy