Achlydosa glandulosa is a species of orchid endemic to New Caledonia and the only species of the genus Achlydosa.Morat, P., T. Jaffré, F. Tronchet, J. Munzinger, Y. Pillon, J. M. Veillon, and M. Chalopin (2012). The taxonomic reference base Florical and characteristics of the native vascular flora of New Caledonia. Adansonia 34 (2): 179–221. https://dx.doi.org/10.5252/a2012n2a1 This species has previously been placed in the genus Megastylis.Hallé, N. (1977). Orchidacées. In Flore de La Nouvelle-Calédonie et Dépendances, edited by A. Aubréville and J. F. Leroy, 8:1–565. Paris: Muséum National d’Histoire Naturelle. Its closest relative is Pterostylis,Cisternas, Mauricio A., Gerardo A. Salazar, Gabriela Verdugo, Patricio Novoa, Ximena Calderón, and María A. Negritto (2012). Phylogenetic Analysis of Chloraeinae (Orchidaceae) Based on Plastid and Nuclear DNA Sequences. Botanical Journal of the Linnean Society 168 (3): 258–77. doi:10.1111/j.1095-8339.2011.01200.x. the sole other genus of subtribe Pterostylidinae.
