Published July 28, 2025 | Version v1
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Petrocodon parviflorus (Gesneriaceae), a new species identified by both morphological and molecular evidence from limestone caves in Guangxi, China

  • 1. Guizhou University, Guiyang, China|Guangxi Institute of Botany, Guangxi Zhuang Autonomous Region and Chinese Academy of Sciences, Guilin, China
  • 2. Guangxi Institute of Botany, Guangxi Zhuang Autonomous Region and Chinese Academy of Sciences, Guilin, China|Guilin Botanical Garden, Guangxi Zhuang Autonomous Region and Chinese Academy of Sciences, Guilin, China
  • 3. Haikou Customs Technical Center, Haikou, China
  • 4. Guizhou University, Guiyang, China
  • 5. Guangxi Institute of Botany, Guangxi Zhuang Autonomous Region and Chinese Academy of Sciences, Guilin, China

Description

Petrocodon parviflorus, a new species of Gesneriaceae, is a typically cave-dwelling species from the limestone region in Guangxi, China. Morphologically, this new species resembles P. lui, but can be readily distinguished by differences in corolla limb lobe shape, calyx lobe surface texture, pistil style length, and central staminode length. Molecular evidence supports its close phylogenetic relationship with P. lui despite their morphological distinctness. Based on the IUCN Red List Categories and Criteria, this species is assessed as Vulnerable (VU, D2).

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References

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