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Issue: Vol. 343 No. 3: 12 March 2018
Type: Article
Published: 2018-03-12
DOI: 10.11646/phytotaxa.343.3.6
Page range: 259–268
Abstract views: 31
PDF downloaded: 1

Petrocodon asterocalyx, a new species of Gesneriaceae from Guangxi, China

College of Landscape Architecture,Beijing University of Agriculture, Beijing Laboratory of Urban and Rural Ecological Environment, Beijing Engineering Research Center of Rural Landscape Planning and Design, CN-102206, Beijing, P.R. 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, Guilin, CN-541006, P.R. China. Gesneriad Conservation Center of China (GCCC), Guilin Botanical Garden, No. 85, Yanshan Town, Guilin, CN-541006, P.R. 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, Guilin, CN-541006, P.R. China. Gesneriad Conservation Center of China (GCCC), Guilin Botanical Garden, No. 85, Yanshan Town, Guilin, CN-541006, P.R. 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, Guilin, CN-541006, P.R. China. Gesneriad Conservation Center of China (GCCC), Guilin Botanical Garden, No. 85, Yanshan Town, Guilin, CN-541006, P.R. 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, Guilin, CN-541006, P.R. China. The Gesneriad Society, 2030 Fitzwater Street, Philadelphia, PA 19146, USA.
Landscape Architect, Philadelphia. PA 19146, USA.
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, Guilin, CN-541006, P.R. China. The Gesneriad Society, 2030 Fitzwater Street, Philadelphia, PA 19146, USA.
Danxia landform endemism flora of Guangxi new taxon taxonomy Eudicots

Abstract

Petrocodon asterocalyx F.Wen, Y.G.Wei & R.L.Zhang, a new species from the Danxia landform area in Guangxi, South China, is described and illustrated based on molecular and morphological data. The molecular evidence shows that the new species is recovered in a weakly supported clade. Within this clade, the new one is morphologically similar to P. hancei (Hemsl.) A.Weber & Mich.Möller and P. coriaceifolius (Y.G.Wei) Y.G.Wei & Mich.Möller, and it can be distinguished from the former by calyx lobes 20–40 × 2–3 mm, corolla 2.5–3.0 cm long, filaments sparsely erectly pubescent, anthers sparsely pubescent, staminodes 3, and stigmas 2; from latter by leaf blades rhombic-oblong or rhombic, base shallowly cuneate, margin crenulate to serrate, calyx lobes linear, 20–40 × 2–3 cm, and anthers 3.5–3.8 mm long, sparsely pubescent and elliptical.