Expansion of the orchid genus Coelogyne (Arethuseae; Epidendroideae) to include Bracisepalum, Bulleyia, Chelonistele, Dendrochilum, Dickasonia, Entomophobia, Geesinkorchis, Gynoglottis, Ischnogyne, Nabaluia, Neogyna, Otochilus, Panisea and Pholidota Author Chase, Mark W. Royal Botanic Gardens, Kew, Richmond, Surrey TW 9 3 AB, UK & Department of Environment and Agriculture, Curtin University, Bentley, Western Australia 6102, Australia Author Gravendeel, Barbara 0000-0002-6508-0895 Naturalis Biodiversity Center, Leiden, The Netherlands & barbara. gravendeel @ naturalis. nl; https: // orcid. org / 0000 - 0002 - 6508 - 0895 barbara.gravendeel@naturalis.nl Author Sulistyo, Bobby P. 0000-0002-5203-4822 Indonesia International Institute for Life-Sciences, Jakarta, Indonesia & bobbysulistyo @ outlook. com; https: // orcid. org / 0000 - 0002 - 5203 - 4822 bobbysulistyo@outlook.com Author Wati, Richa Kusuma 0000-0002-1017-4958 Center for Plant Conservation, Bogor Botanic Garden, Indonesian Institute of Sciences (LIPI), Bogor, Indonesia & richa. kusumawati @ naturalis. nl; https: // orcid. org / 0000 - 0002 - 1017 - 4958 richa.kusumawati@naturalis.nl Author Schuiteman, André 0000-0001-6701-8158 Royal Botanic Gardens, Kew, Richmond, Surrey TW 9 3 AB, UK & a. schuiteman @ kew. org; https: // orcid. org / 0000 - 0001 - 6701 - 8158 a.schuiteman@kew.org text Phytotaxa 2021 2021-07-06 510 2 94 134 http://dx.doi.org/10.11646/phytotaxa.510.2.1 journal article 10.11646/phytotaxa.510.2.1 1179-3163 5426332 Coelogyne quinquangularis (J.J.Sm.) M.W.Chase & Schuit. , comb. nov. Basionym: Dendrochilum quinquangulare J.J.Sm., Blumea 5: 305 (1943) .