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Issue: Vol. 749 No. 2: 26 Mar. 2026
Type: Article
Published: 2026-03-26
DOI: 10.11646/phytotaxa.749.2.5
Page range: 175-185
Abstract views: 0
PDF downloaded: 0

Petrocodon dealbatus var. minimus (Gesneriaceae), a new variety from a karst gorge in Guizhou Province, China

Forestry College, Guizhou University, CN-5500252 Guiyang, China; Guangxi Key Laboratory of Plant Conservation and Restoration Ecology in Karst Terrain, Guangxi Institute of Botany, Guangxi Zhuang Autonomous Region and Chinese Academy of Sciences, CN-541006 Guilin, China; Gesneriad Committee of China Wild Plant Conservation Association, National Gesneriaceae Germplasm Resources Bank of GXIB, Gesneriad Conservation Center of China (GCCC), CN-541006 Guilin, Guangxi, China
Forestry College, Guizhou University, CN-5500252 Guiyang, China
Guangxi Key Laboratory of Plant Conservation and Restoration Ecology in Karst Terrain, Guangxi Institute of Botany, Guangxi Zhuang Autonomous Region and Chinese Academy of Sciences, CN-541006 Guilin, China; Gesneriad Committee of China Wild Plant Conservation Association, National Gesneriaceae Germplasm Resources Bank of GXIB, Gesneriad Conservation Center of China (GCCC), CN-541006 Guilin, Guangxi, China
Guangxi Key Laboratory of Plant Conservation and Restoration Ecology in Karst Terrain, Guangxi Institute of Botany, Guangxi Zhuang Autonomous Region and Chinese Academy of Sciences, CN-541006 Guilin, China; Gesneriad Committee of China Wild Plant Conservation Association, National Gesneriaceae Germplasm Resources Bank of GXIB, Gesneriad Conservation Center of China (GCCC), CN-541006 Guilin, Guangxi, China
Guangxi Key Laboratory of Plant Conservation and Restoration Ecology in Karst Terrain, Guangxi Institute of Botany, Guangxi Zhuang Autonomous Region and Chinese Academy of Sciences, CN-541006 Guilin, China; Gesneriad Committee of China Wild Plant Conservation Association, National Gesneriaceae Germplasm Resources Bank of GXIB, Gesneriad Conservation Center of China (GCCC), CN-541006 Guilin, Guangxi, China
Guangxi Key Laboratory of Plant Conservation and Restoration Ecology in Karst Terrain, Guangxi Institute of Botany, Guangxi Zhuang Autonomous Region and Chinese Academy of Sciences, CN-541006 Guilin, China; Gesneriad Committee of China Wild Plant Conservation Association, National Gesneriaceae Germplasm Resources Bank of GXIB, Gesneriad Conservation Center of China (GCCC), CN-541006 Guilin, Guangxi, China
Forestry College, Guizhou University, CN-5500252 Guiyang, China
Guangxi Key Laboratory of Plant Conservation and Restoration Ecology in Karst Terrain, Guangxi Institute of Botany, Guangxi Zhuang Autonomous Region and Chinese Academy of Sciences, CN-541006 Guilin, China; Gesneriad Committee of China Wild Plant Conservation Association, National Gesneriaceae Germplasm Resources Bank of GXIB, Gesneriad Conservation Center of China (GCCC), CN-541006 Guilin, Guangxi, China
Flora of Guizhou limestone area new taxon Petrocodon dealbatus Subtribe Didymocarpinae Eudicots

Abstract

Petrocodon dealbatus Hance var. minimus X.X.Bai & K.Tan, a new variety from northwest Guizhou Province, China, is described and illustrated based on molecular and morphological data. The molecular evidence shows that the new variety is recovered in a highly supported clade. Within this clade, the new one is morphologically similar to Petrocodon Hance in flower size and corolla shape, especially resembling P. dealbatus var. dealbatus in its white corolla and 2 stamens. However, it differs in its shorter leaf blade 2–2.5 cm long, narrower leaf blade 2–4 mm wide, leaf blade leathery, oblanceolate, and leaves along the stem alternate arrangement. Colour photographs, a detailed description, and a provisional IUCN Red List assessment are provided along with discussions of its geographical distribution, ecology and morphological relationships with other similar species.

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How to Cite

Li, Q.-Y., Bai, X.-X., Zhou, T.-J., Liao, T., Wang, R.-F., Li, X.-J., He, S.-T. & Tan, K. (2026) Petrocodon dealbatus var. minimus (Gesneriaceae), a new variety from a karst gorge in Guizhou Province, China. Phytotaxa 749 (2): 175–185. https://doi.org/10.11646/phytotaxa.749.2.5