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Nuclear phylogenomics of Caryodaphnopsis (Lauraceae) species in Asia with description of a new species from China

Hualong SuGuangxi Key Laboratory of Landscape Resources Conservation and Sustainable Utilization in Lijiang River Basin , Guangxi Normal University , Guilin 541004 , ChinaYang GuoGuangxi Key Laboratory of Landscape Resources Conservation and Sustainable Utilization in Lijiang River Basin , Guangxi Normal University , Guilin 541004 , ChinaMengyao FangGuangxi Key Laboratory of Landscape Resources Conservation and Sustainable Utilization in Lijiang River Basin , Guangxi Normal University , Guilin 541004 , China林建勇Guangxi Forestry Research Institute , Guangxi Key Laboratory of Superior Timber Trees Resource Cultivation , Key Laboratory of National Forestry and Grassland Administration on Cultivation of Fastgrowing Timber inHu ChenCentral South China , Guangxi Laboratory of Forestry , Nanning 530002 , ChinaZhangqi YangGuangxi Forestry Research Institute , Guangxi Key Laboratory of Superior Timber Trees Resource Cultivation , Key Laboratory of National Forestry and Grassland Administration on Cultivation of Fastgrowing Timber inThanh Son HoangSilviculture Research Institute , Vietnamese Academy of Forest Sciences , Hanoi 10000 , VietnamJianwu LiSoutheast Asia Biodiversity Research Institute , Chinese Academy of Sciences & Center for Integrative Conservation , Xishuangbanna Tropical Botanical Garden , Chinese Academy of Sciences , Mengla 666303 , ChinaYunhong TanSoutheast Asia Biodiversity Research Institute , Chinese Academy of Sciences & Center for Integrative Conservation , Xishuangbanna Tropical Botanical Garden , Chinese Academy of Sciences , Mengla 666303 , ChinaYu SongKey Laboratory of Ecology of Rare and Endangered Species and Environmental Protection (Ministry of Education) and University Engineering Research Center of Bioinformation and Genetic Improvement of Specialty Crops, Guangxi Normal University, Guilin 541004, China

2026

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Litsenziya: cc-by

ABI

Annotatsiya

A well-supported phylogeny is essential for understanding the evolutionary history and lineage of species. However, newly discovered species can challenge previous incomplete estimates, thereby refining infrageneric classification and species relationships. In this study, we reconstructed phylogenies using 344 nuclear single-copy orthologous genes from 48 individuals, covering at least 14 Caryodaphnopsis species currently recognized in Asia. Our phylogenies recovered four well-supported clades of Caryodaphnopsis in the family and identified one new Caryodaphnopsis species in the third clade, designated as C. minutiflora sp. nov., which was discovered in low-altitude karst terrain within the tropical forests of southwestern Guangxi, China. This new species shows molecular phylogenetic affinity with members of the fourth clade, including C. hekouensis, C. laotica, C. latifolia, C. malipoensis, C. tonkinensis, and C. rubrinervis from karst forest, while sharing morphological similarities with C. cangyuanensis and C. henryi from the early-diverging clade in Asia. Notably, C. minutiflora can be readily distinguished by its large inflorescences, minute flowers, and pyriform fruits. Describing new species is crucial for refining phylogenetic patterns, as demonstrated by this study, which resolves the uncertainty among Caryodaphnopsis species in Asia and identifies a new taxon, C. minutiflora. The discovery of this new taxon, in turn, underscores the importance of continued taxonomic exploration for evolutionary inference.

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DOI: 10.48130/gcomm-0026-0017

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