Research Paper

Lysimachia longiracemosa (Primulaceae: Lysimachieae), a new frutescent herb from Yunnan, China

Zhengxu Ma, Dongli Quan, Yun-Hong Tan

Published on: 04 January 2026

Page: 32 - 36

DOI: 10.6165/tai.2026.71.32

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    Abstract

    Lysimachia longiracemosa, a new species of Primulaceae, is described from the margin of highland subtropical broad-leaved forests in southeastern Yunnan, China. Based on morphological evidence, the new species is placed in Lysimachia subgenus Idiophyton and diagnosed against its closest congener, L. nutantiflora. A revised key is also provided to distinguish L. longiracemosa from the related frutescent species with racemose inflorescences of the Lysimachia subgenus Idiophyton.

    Keyword: Flora of China, Linnean, Lysimachia nutantiflora, Lysimachia subgenus Idiophyton, Yunnan

    Literature Cited

    Anderberg, A.A., Manns, U., K?llersj?, M. 2007 Phylogeny and floral evolution of the Lysimachieae (Ericales, Myrsinaceae): evidence from ndhF sequence data. Willdenowia 37(2): 407–421.
    DOI: 10.3372/wi.37.37202View Article Google Scholar

    Anderberg, A.A., St?hl, B. 1995 Phylogenetic interrelationships in the order Primulales, with special emphasis on the family circumscriptions. Can. J. Bot. 73(11): 1699–1730.
    DOI: 10.1139/b95-184View Article Google Scholar

    Bachman, S., Moat, J., Hill, A.W., de la Torre, J., Scott, B. 2011 Supporting Red List threat assessments with GeoCAT: geospatial conservation assessment tool. ZooKeys 150: 117–126.
    DOI: 10.3897/zookeys.150.2109View Article Google Scholar

    Chen, F.H., Hu, C.M. 1979 Taxonomic and phytogeographic studies on Chinese species of Lysimachia. Acta Phytotax. Sin. 17: 21–53.

    Hao, G., Yuan, Y.M., Hu, C.M., Ge, X.J., Zhao, N.X. 2004 Molecular phylogeny of Lysimachia (Myrsinaceae) based on chloroplast trnL–F and nuclear ribosomal ITS sequences. Mol. Phylogenet. Evol. 31(1): 323–339.
    DOI: 10.1016/S1055-7903(03)00286-0View Article Google Scholar

    Hu, C.M., Kelso, S. 1996 Primulaceae. In: Wu, Z.Y., Raven, P.H. (eds.), Flora of China, Vol. 15, pp. 99–185. Science Press and Missouri Botanical Garden Press.
    DOI: 10.2305/CJDF9122View Article

    IUCN 2024 Guidelines for Using the IUCN Red List Categories and Criteria, Version 16. International Union for Conservation of Nature. https://www.iucnredlist.org/resources/redlistguidelines

    Liu, T.J., Zhang, S.Y., Wei, L., Lin, W., Yan, H.F., Hao, G., Ge, X.J. 2023 Plastome evolution and phylogenomic insights into the evolution of Lysimachia (Primulaceae: Myrsinoideae). BMC Plant Biol. 23(1): 359.
    DOI: 10.1186/s12870-023-04363-zView Article Google Scholar

    Manns, U., Anderberg, A.A. 2005 Molecular phylogeny of Anagallis (Myrsinaceae) based on ITS, trnL–F, and ndhF sequence data. Int. J. Plant Sci. 166(6): 1019–1028.
    DOI: 10.1086/449318View Article Google Scholar

    Manns, U., Anderberg, A.A. 2009 New combinations and names in Lysimachia (Myrsinaceae) for species of Anagallis, Pelletiera and Trientalis. Willdenowia 39(1): 49–54.
    DOI: 10.3372/wi.39.39103View Article Google Scholar

    Manns, U., Anderberg, A.A. 2011 Biogeography of ‘tropical Anagallis’ (Myrsinaceae) inferred from nuclear and plastid DNA sequence data. J. Biogeogr. 38(5): 950–961.
    DOI: 10.1111/j.1365-2699.2010.02454.xView Article Google Scholar

    Nong, Y., Fang, Y., Xu, C.-G., Wei, G.-Y., Yan, K.-J., Hu, R.-C., Wen, Y.-G. 2023 Lysimachia cavicola (Primulaceae), a new species from Guangxi, China. PhytoKeys 235: 189–198.
    DOI: 10.3897/phytokeys.235.109528View Article Google Scholar

    Tong, Y., Xia, N., Hoang, V.S., Hu, C.M. 2017 Lysimachia gesnerioides, a new synonym of Lysimachia baviensis (Primulaceae). Phytotaxa 324(3): 298–300.
    DOI: 10.11646/phytotaxa.324.3.7View Article Google Scholar

    Xu, H., Xu, S.Z., Gan, Q.L., Li, Z.Y. 2024 Lysimachia pubiflora (Primulaceae), a new species from Hubei, China. PhytoKeys 249: 269–275.
    DOI: 10.3897/phytokeys.249.137900View Article Google Scholar

    Yan, H.F., Hao, G. 2024 Lysimachia ailaoshanensis (Primulaceae), a new species from Yunnan, China. PhytoKeys 246: 277–282.
    DOI: 10.3897/phytokeys.246.130838View Article Google Scholar

    Yan, H.F., Zhang, C.Y., Anderberg, A.A., Hao, G., Ge, X.J., Wiens, J.J. 2018 What explains high plant richness in East Asia? Time and diversification in the tribe Lysimachieae (Primulaceae). New Phytol. 219(1): 436–448.
    DOI: 10.1111/nph.15144View Article Google Scholar

    Zhang, X.Y., Dai, J.M., Fan, Q., Chen, Z.X., Tang, G.D., Liao, W.B. 2024 Lysimachia danxiashanensis, a new species of Primulaceae from Guangdong, China. PhytoKeys 237: 257–268.
    DOI: 10.3897/phytokeys.237.114484View Article Google Scholar