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| Jasminum parceflorum Kai Zhang & D.X. Zhang
in Zhang, Wu, Pan, Zhou & Zhang, 2020.
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Abstract
Jasminum parceflorum (Oleaceae), a new species from tropical limestone habitats in Yunnan, China, is described and illustrated here. The new species is similar to J. pierreanum and J. rarum, but can be distinguished by its linear calyx lobes, dry calyces without ridges, terminal 1 (or 3)-flowered cymes and axillary solitary flowers.
Keywords: Jasminum, limestone forest, Xishuangbanna
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| Figure 1. Jasminum parceflorum. A flowering branch B branchlet C leaves (adaxial view and abaxial view) D vein axils with hair tufts (abaxial view) E stamens F pin flower G thrum flower H peduncle with bracts I calyx J pistil of pin flower K pistil of thrum flower L stigma. Drawn by Yunxiao Liu. |
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| Figure 2. Jasminum parceflorum. A habitat B habit C branch with a thrum flower D branchlet E dissected corolla tubes, thrum flower (upper) and pin flower (lower) F fruiting branch G branches with pin flowers H calyx.
Scale bars: 0.5 mm (D), 1 cm (E, F), 1 mm (H). Photos by Kai Zhang.
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Jasminum parceflorum Kai Zhang & D.X. Zhang, sp. nov.
Diagnosis: Jasminum parceflorum is morphologically similar to J. pierreanum Gagnep. and J. rarum Kerr, but can be distinguished by its linear calyx lobes, dry calyces without ridges, terminal 1 (or 3)-flowered cymes and axillary solitary flowers.
Distribution and habitat: Jasminum parceflorum is currently found in Mengla County and Jinghong City, Xishuangbanna Prefecture, Yunnan Province, China (Fig. 3). It grows in tropical evergreen forests on slopes of limestone mountains, never occurring in open areas such as mountain ridges and forest edges.
Etymology: The specific epithet is derived from the fact that its mature individual has fewer flowers in comparison with most other jasmine species.
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| Figure 3. A Distribution of Jasminum parceflorum in Yunnan Province, China B view of Yinchang Mountain. |
Kai Zhang, Mingsong Wu, Bo Pan, Lianxuan Zhou and Dianxiang Zhang. 2020. Jasminum parceflorum (Oleaceae), A New Species from southern Yunnan, China. PhytoKeys 146: 109-115. DOI: 10.3897/phytokeys.146.49625
