New orchids in the flora of Vietnam VIII (Orchidaceae: Epidendroideae, tribes Malaxideae, Neottieae and Podochileae) Author Averyanov, Leonid V. 0000-0001-8031-2925 Komarov Botanical Institute of the Russian Academy of Sciences, 2, Prof. Popov Street, 197022, St. Petersburg, Russia av_leonid@mail.ru Author Nguyen, Van Canh 0000-0001-9578-0342 Institute of Applied Technology, Thu Dau Mot University, No. 6, Tran Van On Street, Phu Hoa Ward, Thu Dau Mot City, Binh Duong Province, Vietnam nguyenvancanh@tdmu.edu.vn Author Vuong, Truong Ba 0000-0003-3452-8455 Institute of Tropical Biology, Vietnam Academy of Science and Technology, 85, Tran Quoc Toan Street, District 3, Ho Chi Minh City, Vietnam bavuong2019@yahoo.com Author Nuraliev, Maxim S. 0000-0001-8291-2633 Department of Higher Plants, Biological Faculty, M. V. Lomonosov Moscow State University, 1, 12, Leninskie Gory, 119234, Moscow, Russia & Joint Russian-Vietnamese Tropical Scientific and Technological Center, 63, Nguyen Van Huyen Street, Cau Giay District, 122000, Hanoi, Vietnam max.nuraliev@gmail.com Author Nguyen, Khang Sinh 0000-0001-5171-4140 Institute of Ecology and Biological Resources, Vietnam Academy of Science and Technology, 18, Hoang Quoc Viet Road, Cau Giay District, Hanoi, Vietnam & Graduate University of Science and Technology, Vietnam Academy of Science and Technology, 18, Hoang Quoc Viet Road, Cau Giay District, Hanoi, Vietnam nskhang@gmail.com Author Maisak, Tatiana V. 0000-0001-5919-6755 Komarov Botanical Institute of the Russian Academy of Sciences, 2, Prof. Popov Street, 197022, St. Petersburg, Russia tmaisak@mail.ru Author Yudova, Daria A. 0000-0002-3214-5795 Komarov Botanical Institute of the Russian Academy of Sciences, 2, Prof. Popov Street, 197022, St. Petersburg, Russia gloomy_lars@mail.ru Author Saidov, Nikita T. 0000-0002-3940-6628 Komarov Botanical Institute of the Russian Academy of Sciences, 2, Prof. Popov Street, 197022, St. Petersburg, Russia nick-saidov@yandex.ru Author Nguyen, Cuong Huu 0000-0003-2281-741X Vietnam National University of Forestry, Xuan Mai, Chuong My, Hanoi, Vietnam nguyenhuucuong.tvr@gmail.com Author Nong, Duy Van 0000-0002-1509-4412 Tay Nguyen Institute for Scientific Research, Vietnam Academy of Science and Technology, Da Lat, Vietnam nongvanduy07@yahoo.com.vn text Phytotaxa 2024 2024-07-02 658 1 1 49 http://dx.doi.org/10.11646/phytotaxa.658.1.1 journal article 10.11646/phytotaxa.658.1.1 1179-3163 13217417 Sunipia rimannii (Rchb.f.) Seidenfaden (1980: 8 , 1986b: 177 ), Chen et al. (2009: 443) , Averyanov (2013: 42) . ( Fig. 15 ) ≡ Acrochaene rimannii Reichenbach (1882: 796) . ≡ Monomeria rimannii (Rchb.f.) Schlechter (1914: 337) . ≡ Ione rimannii (Rchb.f.) Seidenfaden (1995a: 54) . ≡ Bulbophyllum rimannii (Rchb.f.) J.J.Verm., Schuit. & de Vogel ( Vermeulen et al. 2014: 105 ) , Aung et al. (2020: 66) , Ormerod et al. (2021: 45) , Zhou et al. (2016: 20) , Jin et al. (2023: 439) . Type: — THAILAND . Kanburi, Rimann s.n. Herb. Rchb. 49494 ( holotype W , fide Seidenfaden 1986b , 1995a ). Habitat and phenology in Vietnam : —Creeping epiphyte. Evergreen broad-leaved and mixed montane forests. Very rare. Flowers in February–March. Distribution: — Vietnam : Kon Tum Province (Ngoc Linh Mountains). Myanmar , S China ( Yunnan ), Thailand , Laos . Conservation status in Vietnam : —The single known Vietnamese locality of Sunipia rimannii was discovered in Ngoc Linh Mountains, the highest mountain system of southern Vietnam. Many habitats in this area are currently severely disturbed by selective logging. Accordingly, we preliminarily estimate the national conservation status of the species as Critically Endangered (CR) following the criteria B2ab(iii). Jin et al. (2023) assessed the status of this species as Endangered (EN) but have not provided any details or reasons for their decision. Notes: — Sunipia rimannii is reported here as a new record for the flora of Vietnam . The presence of this species in the Central Highlands of Vietnam was rather expectable, as this species was already known in surrounding areas including its recent finding in the highlands of Laos ( Averyanov 2013 ). In Eastern Indochina, populations of this species are likely to be highly fragmented, being confined exclusively to highland areas. Studied specimen:— VIETNAM . Kon Tum Province : Ngoc Linh Mountains, flower has 2 separated pollinaria, lip with longitudinal callus from base, sepals and lip purple, petals white, 18 February 2022 , Truong Ba Vuong, BV 1493 (VNM 00070004, photos LE LE01123545 https://en.herbariumle.ru/?t=occ&id=141852).