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Issue: Vol. 731 No. 1: 25 Nov. 2025
Type: Article
Published: 2025-11-25
DOI: 10.11646/phytotaxa.731.1.7
Page range: 87-95
Abstract views: 84
PDF downloaded: 11

Mitreola sinhoensis (Loganiaceae), a new species from northwestern Vietnam

Graduate University of Science and Technology, Vietnam Academy of Science and Technology, 18 Hoang Quoc Viet, Cau Giay, Hanoi 10072, Vietnam
Institute of Biology (IB), Vietnam Academy of Science and Technology (VAST), 18 Hoang Quoc Viet, Cau Giay, Hanoi 10072, Vietnam
Institute of Biology (IB), Vietnam Academy of Science and Technology (VAST), 18 Hoang Quoc Viet, Cau Giay, Hanoi 10072, Vietnam
Institute of Biology (IB), Vietnam Academy of Science and Technology (VAST), 18 Hoang Quoc Viet, Cau Giay, Hanoi 10072, Vietnam
Graduate University of Science and Technology, Vietnam Academy of Science and Technology, 18 Hoang Quoc Viet, Cau Giay, Hanoi 10072, Vietnam
Graduate University of Science and Technology, Vietnam Academy of Science and Technology, 18 Hoang Quoc Viet, Cau Giay, Hanoi 10072, Vietnam, Institute of Biology (IB), Vietnam Academy of Science and Technology (VAST), 18 Hoang Quoc Viet, Cau Giay, Hanoi 10072, Vietnam
Graduate University of Science and Technology, Vietnam Academy of Science and Technology, 18 Hoang Quoc Viet, Cau Giay, Hanoi 10072, Vietnam, Institute of Science and Technology Development for Regions, Ministry of Science and Technology, 70 Tran Hung Dao, Hoan Kiem District, Hanoi, Vietnam
College of Forestry, Central South University of Forestry and Technology, Changsha 410004, China
Endemism Lai Chau limestone plant taxonomy Sin Ho District Eudicots

Abstract

Mitreola sinhoensis, a new species of Loganiaceae, is described and illustrated. It was found on limestone mountain in Sin Ho Commune, Lai Chau Province, northwestern Vietnam. The new species is characterized by conspicuously elongated stems, a fibrous root system with 1–3 well-developed roots distinct from the others, narrowly lanceolate to linear-lanceolate leaf blade 2.5–4.5 × 0.3–0.6 cm with attenuate base and apex, terminal cymes typically bearing seven flowers, oblong corolla lobes, stamens inserted at the lower one-third of the corolla tube, widely elliptic to subrounded anthers, and puberulent capsule distally bilobed for more than half of its total length. In addition, the morphological description, brief data on its distribution, habitat, and conservation status are provided. Its taxonomic relationships with other species of Mitreola possessing conspicuously elongated stems and narrow leaves are also discussed.

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How to Cite

Tran, T.P.A., Nguyen, K.S., Quang, B.H., Bui, van T., Trung, N.T., Binh, T.D., Nguyen, T.T. & Wu, L. (2025) Mitreola sinhoensis (Loganiaceae), a new species from northwestern Vietnam. Phytotaxa 731 (1): 87–95. https://doi.org/10.11646/phytotaxa.731.1.7