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| Lysimachia liujiangensis W.B. Xu, Z.C. Lu & L.N. Dong, in Lu, Yuan, Wei, Dong et Xu, 2021. |
Abstract
Lysimachia liujiangensis, a new species of Lysimachia subg. Idiophyton Hand.-Mazz. from central Guangxi, China, is described and illustrated based on morphological and molecular data. The phylogenetic analyses showed that Lysimachia liujiangensis belongs to subg. Idiophyton and closely related to L. millietii (H.Lév.) Hand.-Mazz.. However, Lysimachia liujiangensis can be distinguished from L. millietii by its stems densely dark purple-glandular at the top and terete in upper part, leaf blade oblanceolate, pedicel 1.3–2.2 cm long, dark purple-glandular, calyx lobes 5–7 mm long, dark purple-glandular on both sides and margin.
Keyword: Lysimachia subg. Idiophyton, Lysimachia millietii, limestone flora, Primulaceae
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| Lysimachia liujiangensis A. A part of plant, B. Lower surface of leaf, C. Calyx, D and E. Flower, frontal view, F. Flower, lateral view, G. Flower anatomy, H. Pistil, I. Stamens, J. Capsule. (Drawn by W.H. Lin from the holotype and paratype) |
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| Lysimachia liujiangensis A. Habitat, B. Habit, C. Stem, showing densely dark purple-glandular at the top, D and E. Flower, frontal view, F. Flower, lateral view, G. Calyx, H. Lower surface of leaf, I. Capsule, J. Stamens, K. Flower anatomy. |
Lysimachia liujiangensis W.B. Xu, Z.C. Lu & L.N. Dong, sp. nov.
柳江香草
Diagnosis: Lysimachia liujiangensis is related to Lysimachia millietii (H.Lév.) Hand.-Mazz. (in Brotherus et al. 1936) (Fig. 5B), but differs by the stems densely dark purple-glandular at the top and terete in upper part, leaf blade oblanceolate, pedicel 1.3–2.2 cm long, dark purple-glandular, calyx lobes 5–7 mm long, dark purple glandular on both sides and margin.
Etymology: The specific epithet ‘liujiangensis’ refers to the type locality of this new species.
Distribution and habitat: Lysimachia liujiangensis is known only from the type locality in Baipeng Town, Liujiang County, Guangxi Zhuang Autonomous Region, China (Fig. 6). It grows in shrub of slope of limestone hills.
Zhao-Cen Lu, Quan Yuan, Su-Juan Wei, Li-Na Dong and Wei-Bin Xu. 2021. Lysimachia liujiangensis (Primulaceae), A New Species from Limestone Area of central Guangxi, China. Taiwania. 66(1); 65-72. DOI: 10.6165/tai.2021.66.65
