A newly recorded genus and twelve newly recorded species of ferns for Vietnam from Lang Biang Plateau Author Chen, Cheng-Wei 0000-0001-9709-6739 Independent researcher, Keelung 202, Taiwan. wade0504@gmail.com Author Hsu, Tian-Chuan 0000-0002-2612-1885 Botanical Garden Division, Taiwan Forestry Research Institute, Taipei 100, Taiwan. lecanorchis@gmail.com Author Chao, Yi-Shan 0000-0001-7433-5987 Department of Biomedical Science and Environmental Biology, Kaohsiung Medical University, Kaohsiung 80761, Taiwan. pteridaceae@gmail.com Author Lu, Ping-Fong 0000-0003-2297-1230 Taiwan Society of Plant Systematics, Taipei 106, Taiwan. fernslu@gmail.com Author Li, Chia-Wei Institute of Molecular and Cellular Biology, National Tsing Hua University, Hsinchu 30013, Taiwan. & Bioresource Conservation Research Center, College of Life Science, National Tsing Hua University, Hsinchu 30013, Taiwan. Author Tram, Nguyen Khanh Trinh 0000-0002-5956-9029 Department of Ecology-Evolutionary Biology, University of Science, Vietnam National University, Ho Chi Minh City, Vietnam. luispasture@gmail.com Author Nguyen, Ich Le Phuoc Thanh 0000-0002-7252-8635 International Center for Tropical Highlands Ecosystems Research of Bidoup - Nui Ba National Park, Lac Duong, Lam Dong, Vietnam. phuocthanh1993@gmail.com Author Dang, Minh Tri 0000-0003-2976-0946 Southern Institute of Ecology & Graduate University of Science and Technology, Vietnam Academy of Science and Technology, Ho Chi Minh City, Vietnam. dangminhtri.nth@gmail.com Author Luu, Hong Truong 0000-0002-7036-7081 Southern Institute of Ecology & Graduate University of Science and Technology, Vietnam Academy of Science and Technology, Ho Chi Minh City, Vietnam. hongtruongluu@gmail.com Author Parris, Barbara 0000-0002-0478-627X Fern Research Foundation, 21 James Kemp Place, Kerikeri, Bay of Islands 0230, New Zealand. barbara2parris@gmail.com text Phytotaxa 2020 2020-05-19 443 2 121 143 http://dx.doi.org/10.11646/phytotaxa.443.2.1 journal article 10.11646/phytotaxa.443.2.1 1179-3163 13878119 Pteris latipinna Y.S.Chao & W.L.Chiou ( Fig. 12 ) Type:— TAIWAN . Hsinchu County : Zhudong Town, Wuchihshan, 3 March 2013 , Y .- S . Chao 2092 ( holotype : TAIF-513634!, isotypes : TAIF-513635!, TAIF-513636!, TNS !). Voucher specimens examined :— VIETNAM . Lam Dong Province , Lam Ha District , Phi To Commune, Nam Ban Protection Forest, Tieu khu 245, broad-leaved evergreen forest, ca. 1300 m , 11.914° N , 108.264° E , 4 December 2018 , Y .- S . Chao 3058 ( SGN !, TAIF !) ; same locality, 2 June 2019 , C .- W . Chen Wade5727 ( PHH !, SGN !, SING !, TAIF !) . Additional specimens examined :— TAIWAN . Hsinchu County , Guanxi, Chike Mt., P .- F . Lu 24586 (TAIF-512825!, TAIF-512826!); Hsinchu County , Jianshi, P .- F . Lu 25108 (TAIF-404820!); Hsinchu County , Pawushan, P .- F . Lu 26666 (TAIF-446791!, TAIF-446792!). Distribution :—Previously only known from Taiwan . Ecology :—This species grows on ground under broad-leaved evergreen forest at altitudes of 1100–1300 m . Note :—In Vietnam , this species is most morphologically very similar to Pteris fauriei Hieron. but can be distinguished by having wider lateral pinnae and its terminal pinna is distinctly larger than lateral pinnae. Chao et al. (2017) also mentioned that P. latipinna can also be distinguished from its closely related species by its triangular basal segments of the lateral pinnae. However, the basal segments of lateral pinnae of the plants in Vietnam are falcate and we also noticed that the plants in Fig. 1 of Chao et al. (2017) neither of them has those triangular basal segments. Therefore, the triangular basal segments of the lateral pinnae are not characteristic for P. latipinna .