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Issue: Vol. 781 No. 2: 21 Oct. 2026
Type: Article
Published: 2026-10-21
DOI: 10.11646/phytotaxa.781.2.5
Page range: 151-164
Abstract views: 22
PDF downloaded: 1

Bilimbia guiyangensis sp. nov. (Ramalinaceae, Lecanoromycetes), a new lichen species from Guiyang, China

State Key Laboratory of Discovery and Utilization of Functional Components in Traditional Chinese Medicine & School of Pharmaceutical Sciences; Guizhou Medical University; Guian New District; Guizhou 550004; P. R. China
State Key Laboratory of Discovery and Utilization of Functional Components in Traditional Chinese Medicine & School of Pharmaceutical Sciences; Guizhou Medical University; Guian New District; Guizhou 550004; P. R. China
State Key Laboratory of Discovery and Utilization of Functional Components in Traditional Chinese Medicine & School of Pharmaceutical Sciences; Guizhou Medical University; Guian New District; Guizhou 550004; P. R. China
Department of Entomology and Plant Pathology; Faculty of Agriculture; Chiang Mai University; Chiang Mai 50200; Thailand
Chongqing Three Gorges Medical College; Wanzhou; Chongqing; 404100; P. R. China
Anshun University; Anshun City; Guizhou Province; 561000; P.R. China
State Key Laboratory of Discovery and Utilization of Functional Components in Traditional Chinese Medicine & School of Pharmaceutical Sciences; Guizhou Medical University; Guian New District; Guizhou 550004; P. R. China
State Key Laboratory of Discovery and Utilization of Functional Components in Traditional Chinese Medicine & School of Pharmaceutical Sciences; Guizhou Medical University; Guian New District; Guizhou 550004; P. R. China
State Key Laboratory of Discovery and Utilization of Functional Components in Traditional Chinese Medicine & School of Pharmaceutical Sciences; Guizhou Medical University; Guian New District; Guizhou 550004; P. R. China
Lichens Fungi Karst ecosystem Lichenized fungi Molecular systematics Taxonomy

Abstract

Bilimbia guiyangensis sp. nov. is described and illustrated from densely vegetated subtropical forest in Guiyang, China. The new taxon is characterized by a rimose, non‑sorediate thallus, lecideine apothecia, and 3‑septate, relatively long ascospores (13–24 × 4–5 µm). According to phylogenetic analysis of ITS, LSU and mtSSU sequences, the new species is sister to Bilimbia fuscoviridis, from which it differs in having a non‑sorediate thallus (vs. sorediate), lecideine apothecia (vs. biatorine), and longer ascospores (13–24 µm vs. 11.5–17.0 µm in length). This study also provides one of the most comprehensive syntheses of morphological and chemical data for the genus to date, addressing long-standing taxonomic ambiguities and inconsistencies across available descriptions. A detailed tabular comparison of all available species descriptions within the genus is provided to facilitate accurate identification and support future taxonomic and phylogenetic research.

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How to Cite

Wang, Q., Solomon, B., Habib, K., Liu, L., Lu, P., Jin, Y., Khurshid, R., Chang, S. & Li, Q. (2026) Bilimbia guiyangensis sp. nov. (Ramalinaceae, Lecanoromycetes), a new lichen species from Guiyang, China. Phytotaxa 781 (2): 151–164. https://doi.org/10.11646/phytotaxa.781.2.5