Yoania pingbianensis (Liu, Zhang & Li) Yukawa & Freudenstein 2016

Yoania pingbianensis was first discovered and described as Yunorchis pingbianensis by Liu et al. (2015). The creation of the new genus was based on a supposedly unique morphology and DNA analysis which pointed out that this species is related to Dactylostalix Rchb.f. and/or Calypso Salisbury. Yukawa & Freudenstein (2016) looked closely into this proposal and found that the morphology fits to species of Yoania. They carried out another phylogenetic analysis (not publ.) and found that Yunorchis and Yoania clustered. They therefore subsequently proposed the transloaction. Being closely related to Yoania prainii from Sikkim, Y. pingbianensis has, in contrast, a more developed basal part of the lip and exhibits purple-red colours in the abaxia surface of the sepals while Y. prainii presents white flowers. Other characters are the central papillate-pubescent callus of the lip and distant scales on the rhizome (Yukawa & Freudnestein 2016). Furthermore they note that Averyanov (2011) did not describe Y. prainii but a specimen of Y. pingbianensis, which enlarges the known distribution of the species to Vietnam (Ha Giang) and South China (Pingbian county of Yunnan; etymology of the basionym) (POWO 2021).