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Issue: Vol. 429 No. 1: 16 January 2020
Type: Article
Published: 2020-01-16
DOI: 10.11646/phytotaxa.429.1.5
Page range: 65–72
Abstract views: 45
PDF downloaded: 2

Taxonomic studies on Ophiorrhiza in Vietnam I: Ophiorrhiza hiepii and O. hainanensis, a new species and new record from northern Vietnam

College of Forestry, Central South University of Forestry and Technology, China
Guangxi Colleges and Universities Key Laboratory of Utilization of Microbial and Botanical Resources, Guangxi University for Nationalities, China
Institute of Ecology and Biological Resources, Vietnam Academy of Science and Technology, Vietnam, 18 Hoang Quoc Viet Road, Cau Giay, Hanoi, -100000, Vietnam
Institute of Ecology and Biological Resources, Vietnam Academy of Science and Technology, Vietnam, 18 Hoang Quoc Viet Road, Cau Giay, Hanoi, -100000, Vietnam Graduated University of Science and Technology, Vietnam Academy of Science and Technology, Vietnam
College of Forestry, Central South University of Forestry and Technology, China
Eudicots Rubiaceae taxonomy plant diversity supplemental description

Abstract

Ophiorrhiza hiepii and O. hainanensis are reported as a new species and a new record for Vietnam respectively. O. hiepii is morphologically similar to O. subrubescens but differs by its smaller habit, usually unbranched stems, fewer secondary veins, umbelliform and sub-congested cymes, shorter corolla tubes and shorter stigma lobes in short-styled flowers. The mature flowers of O. hainanensis, which were unknown before, were measured in the wild for supplemental description of its floral characters. Additionally, the relationship between O. hainanensis and O. nutans, two easily confused species is clarified.