Didymoplexis pallens Griffith 1844
Didymoplexis pallens is the type species of the genus and was described by Griffith (1844) from a collection found near Serampore, India, where it was found growing next to Bamboo. The stigma structure was most remarkable and unfamiliar for the author, leading to the description of this new genus, which was thought to be close to Dendrobeae and Epidendraea. Later Reichenbach f. proposed a translocation in Seemann (1868) to the genus Epiphanes pallens and Mueller (1873) proposed Gastrodia pallens. Blume (1849) on the other hand described Leucorchis sylvatica as a new species from West Java, Bantam. Ridley (1884) used this species as a basionym for his new combination Didymoplexis sylvativa, supporting the proposal made by Griffith (1844). All other synonyms, like Apetalon minutum Wight (1851) are listed on WCSP (2021). D. pallens has probably the widestdistribution of species of the genus, spanning from Afghanistan as a western border to Australia as an eastern border, including Japan, China and many of the isalnds of South East Asia (POWO 2021). The epithet pallens derives from the pale, pure white flowers and the brown, leafless stem.