Meiogyne oligocarpa (Annonaceae), a new species from Yunnan, China

Bine Xue; Yun-Yun Shao; Chun-Fen Xiao; Ming-Fai Liu; Yongquan Li; Yun-Hong Tan

doi:10.7717/peerj.10999

Meiogyne oligocarpa (Annonaceae), a new species from Yunnan, China

PeerJ. 2021 Apr 14:9:e10999. doi: 10.7717/peerj.10999. eCollection 2021.

Authors

Bine Xue¹, Yun-Yun Shao², Chun-Fen Xiao³, Ming-Fai Liu⁴, Yongquan Li¹, Yun-Hong Tan^{5

6}

Affiliations

¹ College of Horticulture and Landscape Architecture, Zhongkai University of Agriculture and Engineering, Guangzhou, Guangdong, China.
² Guangdong Provincial Key Laboratory of Digital Botanical Garden, South China Botanical Garden, Guangzhou, Guangdong, China.
³ Horticulture Department, Xishuangbanna Tropical Botanical Garden, Chinese Academy of Sciences, Menglun, Mengla, Yunnan, China.
⁴ Division of Ecology and Biodiversity, School of Biological Sciences, The University of Hong Kong, Hong Kong, China.
⁵ Southeast Asia Biodiversity Research Institute, Chinese Academy of Sciences & Center for Integrative Conservation, Xishuangbanna Tropical Botanical Garden, Chinese Academy of Sciences, Menglun, Mengla, Yunnan, China.
⁶ Center of Conservation Biology, Core Botanical Gardens, Chinese Academy of Sciences, Menglun, Mengla, Yunnan, China.

Abstract

Meiogyne oligocarpa sp. nov. (Annonaceae) is described from Yunnan Province in Southwest China. It is easily distinguished from all previously described Meiogyne species by the possession of up to four carpels per flower, its bilobed, sparsely hairy stigma, biseriate ovules and cylindrical monocarps with a beaked apex. A phylogenetic analysis was conducted to confirm the placement of this new species within Meiogyne. Meiogyne oligocarpa represents the second species of Meiogyne in China: a key to the species of Meiogyne in China is provided to distinguish it from Meiogyne hainanensis. Paraffin sectioning was undertaken to study the anatomy of the corrugations on the inner petals of Meiogyne oligocarpa to verify whether they are glandular.

Keywords: China; Meiogyne; Molecular phylogeny; Taxonomy; Yunnan.

Grants and funding

This research was supported by the National Natural Science Foundation of China [Grant no. 31872646 awarded to Bine Xue and Grant no. 31970223 awarded to Yunhong Tan], Forestry Scientific Technology Innovation Project of Guangdong Province (No.2020KJCX010), the Foundation of Southeast Asia Biodiversity Research Institute, Chinese Academy of Sciences (Y4ZK111B01), a project of the Lancang-Mekong Cooperation (LMC) Special Fund (Biodiversity Monitoring and Network Construction along Lancang-Mekong River Basin project) and the CAS 135 program (No. 2017XTBG-F03). The funders had no role in study design, data collection and analysis, decision to publish, or preparation of the manuscript.