Ophiorrhiza hoanglienensis (Rubiaceae), a new species from north-western Vietnam
THANH TRUNG NGUYEN1,6, YI-GANG WEI2,7, FANG WEN2,8, KHUONG DUY LE3,9 & TRUONG VAN DO4,5,10*
1 Faculty of Biology, VNU Universityof Science, 334 Nguyen Trai, Thanh Xuan, Hanoi, Vietnam
2 Guangxi Key Laboratory of Plant Conservation and Restoration Ecology in Karst Terrain, Guilin Botanical Garden, Guangxi Institute of Botany, Guangxi Zhuang Autonomous Region and Chinese Academy of Sciences, Guilin 541006, China
3 Ha Long University, 258th Bach Dang, Uong Bi, Quang Ninh, Vietnam
4 Vietnam National Museum of Nature, Vietnam Academy of Science & Technology, 18thHoang Quoc Viet Road, Cau Giay, Hanoi, Vietnam
5 Graduate University of Science and Technology, Vietnam Academy of Science & Technology, 18th Hoang Quoc Viet Road, Cau Giay, Hanoi, Vietnam
6 �thanhntsh@gmail.com; https://orcid.org/0000-0003-4734-3775
7 �weiyigang@aliyun.com; https://orcid.org/0000-0001-8796-9858
8 �wenfang760608@139.com; https://orcid.org/0000-0002-3889-8835
9 �ledkhuong.bifem.hut@gmail.com; https://orcid.org/0000-0003-1636-8750
10 �dovantruong_bttn@yahoo.com; https://orcid.org/0000-0002-0585-5513 *Author for correspondence
Abstract
Ophiorrhiza hoanglienensis, a new species from Hoang Lien mountain range, north-western Vietnam, is described and illustrated. The new species is characterized by oblong-lanceolate stipules, equal or subequal paired leaves, congestedcymose inflorescences with 5–10-flowered, distylous flowers, well-developed bracts, lanceolate, 15–20 mm long, unequally 5-lobed calyx with narrowly lanceolate lobes, longest one 3.2–3.5 mm long, shortest one 1.2–2 mm long, exclusively white corolla with 25–28 mm long tube and ovate to broadly triangular lobes, dorsally ribbed without horn. The information on ecology, conservation status, and comparison with similar species is also provided.
Keywords: endemic, Flora of Vietnam, new taxon, Ophiorrhizeae
download bài báo đầy đủ: Ophiorrhiza hoanglienensis