Ophiorrhizaliuyanii (Rubiaceae), a new species from south-western China and northern Vietnam

Chu-Yu Liu; Xiao-Wen Liao; Li-Chun Ye; Yun-Hong Tan; Khang Sinh Nguyen; Tran Duc Thien; Lei Wu

doi:10.3897/phytokeys.248.135078

Ophiorrhizaliuyanii (Rubiaceae), a new species from south-western China and northern Vietnam

PhytoKeys. 2024 Oct 30:248:199-206. doi: 10.3897/phytokeys.248.135078. eCollection 2024.

Authors

Chu-Yu Liu¹, Xiao-Wen Liao², Li-Chun Ye², Yun-Hong Tan³, Khang Sinh Nguyen^{4

5}, Tran Duc Thien^{5

6}, Lei Wu²

Affiliations

¹ School of Minerals Processing and Bioengineering, Central South University, Changsha 410083, China Central South University Changsha China.
² College of Forestry, Central South University of Forestry and Technology, Changsha 410004, China Central South University of Forestry and Technology Changsha China.
³ Center for Integrative Conservation, Xishuangbanna Tropical Botanical Garden, Chinese Academy of Sciences, Mengla 666303, China Xishuangbanna Tropical Botanical Garden, Chinese Academy of Sciences Mengla China.
⁴ Institute of Ecology and Biological Resources, Vietnam Academy of Science and Technology, 18, Hoang Quoc Viet Road, Cau Giay, Hanoi 10072, Vietnam Graduate University of Science and Technology, Vietnam Academy of Science and Technology Hanoi Vietnam.
⁵ Graduate University of Science and Technology, Vietnam Academy of Science and Technology, 18 Hoang Quoc Viet, Cau Giay, Hanoi 10072, Vietnam Institute of Ecology and Biological Resources, Vietnam Academy of Science and Technology Hanoi Vietnam.
⁶ Regional Research and Development Institute, Ministry of Science and Technology, No. 70, Tran Hung Dao, Hoan Kiem District, Hanoi, Vietnam Regional Research and Development Institute, Ministry of Science and Technology Hanoi Vietnam.

Abstract

Ophiorrhizaliuyanii, a new species from south-western China and northern Vietnam, is described and illustrated. The new species is characterised by the glabrous surfaces on almost all plant parts, congested inflorescences and broad-ovate to ovate bracts 9-22 × 4-11 mm. It morphologically differs from the closest species, O.baviensis, mainly in most plant parts being glabrous, bracts broad-ovate to ovate, apex acute or sometimes obtuse, corollas inside with a ring of white hairs at the middle and anthers inserted near the middle in long-styled flowers. According to IUCN Categories and Criteria, O.liuyanii is assessed as Least Concern (LC).

Keywords: New taxon; Ophiorrhiza; Rubiaceae; taxonomy.

Chu-Yu Liu, Xiao-Wen Liao, Li-Chun Ye, Yun-Hong Tan, Khang Sinh Nguyen, Tran Duc Thien, Lei Wu.

Grants and funding

This study was supported by the project of National Plant Specimen Resource Center (NPSRC) (grant. no. 0117G1001). The work of KSN was funded by the Vietnam National Foundation for Science and Technology Development (NAFOSTED) under grant number 106.03-2023.21.