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Lysimachia fanii Y.Feng Huang, W.B.Xu & L.N.Dong
in Huang, Dong & Xu, 2019.
Revealing of the Plant Diversity in China’s Biodiversity Hotspots. PhytoKeys. 130 |
Abstract
Lysimachia fanii, a new species of Lysimachia (Subgen. Idiophyton, Primulaceae), is described and illustrated from Guangxi, China based on morphological and molecular data. Lysimachia fanii differs from L. verbascifolia, L. rupestris and L. alpestris mainly by the habit being nearly rosulate, leaves congested at the apex of the rhizome, leaf blades spatulate to narrowly oblanceolate and flowers solitary. Phylogenetic analyses supported L. verbascifolia as sister to L. fanii. This new species is endemic to limestone areas in Liucheng county of Guangxi, China.
Keywords: Lysimachia, subgen. Idiophyton, Primulaceae, taxonomy, limestone flora
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| Figure 2. Lysimachia fanii. A Habit B flower, frontal view C flower, back view (showing six calyx lobes) D corolla opened showing stamens E calyx and pistil F capsule. (Drawn by X.C. Qu from the holotype). |
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| Figure 3. Lysimachia fanii. A Habitat B habit C flower, frontal view D flower, back view E flower, lateral view F stamens. |
Lysimachia fanii Y.Feng Huang, W.B.Xu & L.N.Dong, sp. nov.
Diagnosis: Lysimachia fanii differs from congeneric species in subgen. Idiophyton mainly by the habit being nearly rosulate, leaves congested at the apex of the rhizome, leaf blades spatulate to narrowly oblanceolate and flowers being solitary.
Etymology: The new species is named after Mr. Li-Yong Fan, who first discovered and collected this rare species.
Distribution and habitat: Lysimachia fanii is known only from the type locality in Taiping Town, Liucheng County, Guangxi Zhuangzu Autonomous Region, China (Fig. 4). It grows on moist limestone rock surfaces at the entrance to caves.
Yun-Feng Huang, Li-Na Dong and Wei‑Bin Xu. 2019. Lysimachia fanii, A New Species of Primulaceae from Limestone Area of Guangxi, China. In: Jie Cai, Wen-Bin Yu, Ting Zhang, De-Zhu Li (Eds) Revealing of the Plant Diversity in China’s Biodiversity Hotspots. PhytoKeys. 130: 75-84. DOI: 10.3897/phytokeys.130.34655
