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Issue: Vol. 720 No. 1: 26 Sept. 2025
Type: Article
Published: 2025-09-26
DOI: 10.11646/phytotaxa.720.1.7
Page range: 75-80
Abstract views: 525
PDF downloaded: 14

Ophiorrhiza dianguiensis (Rubiaceae), a new species from southwestern China

College of Forestry, Central South University of Forestry and Technology, 498 South Shaoshan Road, Changsha 410004, China
College of Forestry, Central South University of Forestry and Technology, 498 South Shaoshan Road, Changsha 410004, China
Institute of Biology, Vietnam Academy of Sciences and Technology, 18 Hoang Quoc Viet, Cau Giay, Ha Noi, 10072, Vietnam; Graduate University of Science and Technology, Vietnam Academy of Science and Technology, 18 Hoang Quoc Viet, Cau Giay, Hanoi 10072, Vietnam
College of Forestry, Central South University of Forestry and Technology, 498 South Shaoshan Road, Changsha 410004, China
College of Forestry, Central South University of Forestry and Technology, 498 South Shaoshan Road, Changsha 410004, China
Ophiorrhiza China new taxon micro-morphology Eudicots

Abstract

Ophiorrhiza dianguiensis (Rubiaceae), a new species known from Guangxi and Yunnan provinces, China, along the China–Vietnam border, is described and illustrated. This species is morphologically similar to O. petrophila, but differs by its persistently erect inflorescences, distinctly longer corolla tubes that are swollen at the base, and narrower, subulate-linear bracts. Micromorphologically, O. dianguiensis has more sinuous leaf epidermal cell walls and a denser covering of tubercles on the testa. According to the IUCN Red List Categories and Criteria, its conservation status is assessed as “Least Concern” (LC).

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How to Cite

Xue, J., Liao, X.-W., Nguyen, K.S., Song, F. & Wu, L. (2025) Ophiorrhiza dianguiensis (Rubiaceae), a new species from southwestern China. Phytotaxa 720 (1): 75–80. https://doi.org/10.11646/phytotaxa.720.1.7