Taxonomic studies on the genus Isotrema (Aristolochiaceae) from China: II. I. brevilimbum (Aristolochiaceae), a new species from Guizhou, China

Jun Wang; Ji-Dong Ya; Cheng Liu; Guang Liu; Feng Cao; Jin-Shuang Ma; Xin-Xin Zhu

doi:10.3897/phytokeys.152.51760

Taxonomic studies on the genus Isotrema (Aristolochiaceae) from China: II. I. brevilimbum (Aristolochiaceae), a new species from Guizhou, China

PhytoKeys. 2020 Jul 3:152:15-25. doi: 10.3897/phytokeys.152.51760. eCollection 2020.

Authors

Jun Wang¹, Ji-Dong Ya², Cheng Liu², Guang Liu³, Feng Cao⁴, Jin-Shuang Ma⁵, Xin-Xin Zhu¹

Affiliations

¹ College of Life Sciences, Xinyang Normal University, Xinyang, 464000, Henan, China Xinyang Normal University Xinyang China.
² Germplasm Bank of Wild Species, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, Yunnan, China Haizhu District Experimental Primary School Guangzhou China.
³ Haizhu District Experimental Primary School, Guangzhou 510245, Guangdong, China none Weining China.
⁴ Weining 553100, Guizhou, China Shanghai Chenshan Botanical Garden Shanghai China.
⁵ Shanghai Chenshan Plant Science Research Center, Chinese Academy of Sciences, Shanghai Chenshan Botanical Garden, Shanghai 201602, Shanghai, China Kunming Institute of Botany, Chinese Academy of Sciences Kunming China.

Abstract

A new species of Isotrema was recently discovered from Guizhou, China and is here named as I. brevilimbum. It is most similar to I. ovatifolium and I. wardianum, but differs in the morphology of leaves and flowers. A detailed description for the new species, along with line drawings, photographs, as well as morphological comparisons with similar species, are provided. In addition, the distribution of I. wardianum in China is here confirmed.

Keywords: Aristolochia wardiana; morphology; subgenus Siphisia; taxonomy.

Jun Wang, Jidong Ya, Cheng Liu, Guang Liu, Feng Cao, Jinshuang Ma, XinXin Zhu.