A taxonomic study of Quercus langbianensis complex based on morphology and DNA barcodes of classic and next generation sequences Author Binh, Hoang Thi Graduate School of Systems Life Sciences, Kyushu University, 744 Motooka, Fukuoka, 819 - 0395, Japan binhht@dlu.edu.vn Author Ngoc, Nguyen Van https://orcid.org/0000-0002-1518-9470 Graduate School of Systems Life Sciences, Kyushu University, 744 Motooka, Fukuoka, 819 - 0395, Japan Author Tagane, Shuichiro Centre for Asian Conservation Ecology, Kyushu University, 744 Motooka, Fukuoka, 819 - 0395, Japan Author Toyama, Hironori Centre for Asian Conservation Ecology, Kyushu University, 744 Motooka, Fukuoka, 819 - 0395, Japan Author Mase, Keiko Centre for Asian Conservation Ecology, Kyushu University, 744 Motooka, Fukuoka, 819 - 0395, Japan Author Mitsuyuki, Chika Kawatabi Field Science Centre, Graduate School of Agricultural Science, Tohoku University, 232 - 3 Yomogida, Naruko-onsen, Osaki, Miyagi 989 - 6711, Japan Author Strijk, Joeri Sergej https://orcid.org/0000-0003-1109-7015 Biodiversity Genomics Team, Plant Ecophysiology & Evolution Group, Guangxi Key Laboratory of Forest Ecology and Conservation (under state evaluation status), College of Forestry, Daxuedonglu 100, Nanning, Guangxi, 530005, PR China & State Key Laboratory for Conservation and Utilisation of Subtropical Agro-bioresources, College of Forestry, Guangxi University, Nanning, Guangxi 530005, PR China Author Suyama, Yoshihisa Kawatabi Field Science Centre, Graduate School of Agricultural Science, Tohoku University, 232 - 3 Yomogida, Naruko-onsen, Osaki, Miyagi 989 - 6711, Japan Author Yahara, Tetsukazu Graduate School of Systems Life Sciences, Kyushu University, 744 Motooka, Fukuoka, 819 - 0395, Japan & Centre for Asian Conservation Ecology, Kyushu University, 744 Motooka, Fukuoka, 819 - 0395, Japan text PhytoKeys 2018 2018-02-07 95 37 70 http://dx.doi.org/10.3897/phytokeys.95.21126 journal article http://dx.doi.org/10.3897/phytokeys.95.21126 1314-2003-95-37 7022FFF3167AFF98FFF3AA3EFFA6FFD7 1222471 Quercus langbianensis Hickel & A.Camus Fig. 13 Quercus langbianensis Hickel & A.Camus, Ann. Sci. Nat., Bot. 10, 3: 382 (1921); [P.H. Lecomte et al.] Fl. Indo-Chine 5: 950 (1929). Type . VIETNAM . " Annam : massif du Lang-Bian, grand Piton Lang-Bian , pres du village de Beneur", 1500-2000 m , 15 Feb. 1914 , A.J.B Chevalier 30029 ( holotype : P [P00379254!]; isotypes: P [P00379255! P00379256!]) . Figure 13. Quercus langbianensis Hickel & A.Camus. A Leafy twig B Abaxial side of mature leaf C Infructescence and mature fruits D Apex of the nut E Basal scar of the nut F Inside of cupule. Materials: A, B from Tagane et al. V 4165 C-F from Tagane et al. V4166 . Distribution and habitat. VIETNAM. Lam Dong Province: Bidoup-Nui Ba National Park. In this study, Quercus langbianensis s. str. is known only from Lang-Bian Mountain of the national park, in lower montane evergreen forest at 1472 m and 1533 m altitude. Additional specimen examined. VIETNAM. Bidoup-Nui Ba National Park, 12°10'34.04"N , 108°40'28.93"E , alt. 1,472 m, 29 Feb. 2016, Tagane S. , Son VD., Wai J. V4465 (DLU, FU, the herbarium of Bidoup-Nui Ba National Park); ibid. 12°10'34.09"N , 108°41'04"E , alt. 1,533 m, 22 Feb. 2016, Tagane S. , Nagamasu H., Naiki A., Dang V. Son, Nguyen V. Ngoc., Binh T. Hoang V4165, V4166 (DLU, FU, the herbarium of Bidoup-Nui Ba National Park); 12°10'34.7"N , 108°41'08.4"E , alt. 1,533 m, 21 Feb. 2016, Tagane S. , Nagamasu H., Naiki A., Dang V. Son, Nguyen V. Ngoc., Binh T. Hoang V3962 (DLU, FU, the herbarium of Bidoup-Nui Ba National Park).