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| Petrocodon zhonglii X.Z. Shi, J.X. Fu & Li H. Yang, in Shi, Fu, Pan, Kang et Yang, 2025. 钟离石山苣苔 || taiwania.NTU.edu.tw/abstract/2060 |
Abstract
Petrocodon zhonglii, a new species of Gesneriaceae from the Danxia landform in Jiangxi, South China, is described and illustrated. The new species is morphologically similar to P. coriaceifolius and P. hancei, but differs from the latter two by its ventricose corolla tube and stipitate capsule. The new species can further be distinguished from P. coriaceifolius by its longer pedicel, and from P. hancei by its sparsely strigillose leaf blade with entire to slightly serrate margins and two conspicuous stigma lobes. In addition, the new species exhibits obvious phylogenetic distance, different phenology and ecological niche to its morphologically similar species. According to current information, the conservation status of the new species should be assessed as Data Deficient (DD) based on the IUCN Red List Categories and Criteria.
Keyword: Flora of Danxia landform, Jiangxi, morphology, Petrocodon coriaceifolius, Petrocodon hancei, taxonomy
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| Petrocodon zhonglii sp. nov. A. habit, B. adaxial top. and abaxial bottom (leaf blade surfaces insert showing indumentum), C. dissected calyx lobes, D. flower top view, E. flower side view, F. opened flower showing stamens and staminodes inserts showing filaments and dehiscent anthers., G. pistil with sepals removed, H. young fruit. All photos by Xi-Zuo Shi. |
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| Petrocodon zhonglii sp. nov. A-B. habitat, C. habit, D. flowering cyme, E. flower in oblique front view. Photos by Fu-Tao Zhuang (A) and Xi-Zuo Shi (B–E). |
Petrocodon zhonglii X.Z. Shi, J.X. Fu & Li H. Yang, sp.
nov. 钟离石山苣苔
Diagnosis: Petrocodon zhonglii differs from P.
coriaceifolius and P. hancei by its ventricose corolla tube
and stipitate capsule. In addition, it can be easily
distinguished from P. coriaceifolius by its longer pedicel
(12–25 mm vs. 3–5 mm), and from P. hancei by its
sparsely strigillose leaf blade with entire to slightly
serrate margin (vs. densely strigillose, obviously
denticulate margin) and two conspicuous stigma lobes (vs.
compressed and inconspicuous).
Xi-Zuo Shi, Jia-Xin Fu, Bo Pan, Ming Kang and Li-Hua Yang. 2025. Petrocodon zhonglii (Gesneriaceae), A New Species from South China. Taiwania. 70(2); 193-199. DOI: 10.6165/tai.2025.70.193 https://taiwania.NTU.edu.tw/abstract/2060
