An infrageneric taxonomic revision of the genus Osmanthus

doi:10.12302/j.issn.1000-2006.202404025

JOURNAL OF NANJING FORESTRY UNIVERSITY ›› 2024, Vol. 48 ›› Issue (3): 58-62.doi: 10.12302/j.issn.1000-2006.202404025

Special Issue: 郑万钧先生诞辰120周年纪念专题

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An infrageneric taxonomic revision of the genus Osmanthus

LI Yongfu¹^,²(), YANG Qinghua², CHEN Lin², ZHANG Min², XIANG Qibai², WANG Xianrong²^,^*(), DUAN Yifan²^,^*()

1. Jiangsu Key Laboratory for the Research and Utilization of Plant Resources, Institute of Botany, Jiangsu Province and Chinese Academy of Sciences, Nanjing Botanical Garden Mem. Sun Yat-Sen, Nanjing 210014, China
2. Nanjing Forestry University, International Cultivar Registration Center for Osmanthus, Nanjing 210037, China

Received:2024-04-21 Revised:2024-05-08 Online:2024-05-30 Published:2024-06-14

Abstract

Abstract:

【Objective】 The genus Osmanthus Lour. species represented by sweet osmanthus has high economic and research values. However, species relationships within the genus have been controversial due to the lack of distinct morphological characters among species, and there is an urgent need for a taxonomic revision of the sectional relationships within the genus. 【Method】 This study integrates multiple lines of evidence from morphological characters and molecular phylogeny to define section-level taxonomic units within the genus. Taxonomic treatments were provided based on taxonomic principles and nomenclatural codes. 【Result】 Here we propose to divide the genus Osmanthus into four sections, first retaining O. sect. Osmanthus and O. sect. Siphosmanthus Franch.; secondly, creating a new section with O. decorus (Boiss. & Balansa) Kasapligil; then creating a new section with O. yunnanensis (Franch.) P. S. Green and O. serrulatus Rehder; and finally, merging O. sect. linocieroides P. S. Green into O. sect. Osmanthus. These four sections are all strongly supported morphologically, phylogenetically and geographically. 【Conclusion】 The new revision ensures the phylogenetic relationships of each group are monophyletic and morphologically specific, which makes the species relationships more consistent with the evidence of systematic evolution, and provides an important reference for future scientific research and resource conservation and utilization.

Key words: sectional relationships, taxonomic revision, phylogenetic relationships, morphological characters, geographic distributions

CLC Number:

S718.4

LI Yongfu, YANG Qinghua, CHEN Lin, ZHANG Min, XIANG Qibai, WANG Xianrong, DUAN Yifan. An infrageneric taxonomic revision of the genus Osmanthus[J]. JOURNAL OF NANJING FORESTRY UNIVERSITY, 2024, 48(3): 58-62.

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References 20

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Green分类系统	分类处理taxonomic treatment
圆锥花序组O. sect. Leiolea(Spach)P. S. Green	已归并至Cartrema Raf.属、Chengiodendron C.B.Shang, X.R.Wang, Yi F.Duan & Yong F.Li属
离瓣木犀组O. sect. Linocieroides P. S. Green P. S. Green	建议将其归并至O. sect. Osmanthus
木犀组O. sect. Osmanthus	建议将O. serrulatus Rehder和O. yunnanensis(Franch.)P.S.Green分离出该组并建立新分组
管花木犀组O. sect. Siphosmanthus Franch.	建议以O. decorus建立新分组
南木犀组O. sect. Notosmanthus P. S. Green	已经归并至Notelaea Vent.属

An infrageneric taxonomic revision of the genus Osmanthus

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