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| Lysimachia speciosa Q.L.Gan, Z.Y.Li & S.Z.Xu, in S.-Z. Xu, H. Xu, Gan et Li, 2025. |
Abstract
A new species, Lysimachia speciosa, from western Hubei Province, Central China, is described and illustrated. The species is morphologically similar to L. deltoidea, especially var. cinerascens, but mainly differs from the latter by the recurved pubescence on the stem, petiole, and pedicel; the rhombic-ovate or ovate-lanceolate leaf blade; the longer petiole, calyx, corolla, stamens, and style; the erose lobes of the corolla; and the hairy ovary and capsule.
Key words: China, Hubei, Lysimachia, new species, taxonomy
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| Lysimachia speciosa sp. nov. A flowering plants B roots C stem and petioles D opposite leaves on lower stem E alternate leaves on mid- and distal stem F leaves G mid-vein and lateral veins H abaxial surface of leaf I adaxial view of corolla J dissected corolla showing stamens K pistil L capsule and persistent calyx M seeds. |
Lysimachia speciosa Q.L.Gan, Z.Y.Li & S.Z.Xu, sp. nov.
Diagnosis. Lysimachia speciosa is most similar to L. deltoidea var. cinerascens and L. grammica in having cespitose and ascending-erect stems, densely multicellular hairs on the plant, both opposite and alternate leaves, and solitary and axillary yellow flowers, but the new species can be easily distinguished from both by its recurved-pubescent indumentum on stems, petioles, and pedicels; shorter than subtending leaves pedicels; much longer calyx, corolla, filaments, and style; and pilose ovary and capsule. ...
Etymology. Lysimachia speciosa is a perennial herb with an attractive plant type and numerous cespitose, ascending-erect stems. Besides, the stem and petiole of the new species sometimes are flushed red. The flowers are yellow and showy. Thus, the specific epithet is derived from the aforementioned morphological characteristics.
Song-Zhi Xu, Han Xu, Qi-Liang Gan and Zhen-Yu Li. 2025. Lysimachia speciosa (Primulaceae), A New Species from Central China. PhytoKeys. 263: 209-214. DOI: doi.org/10.3897/phytokeys.263.139659
