New Orchids (Orchidaceae) in the Flora of Vietnam II. Vandeae

New Orchids (Orchidaceae) in the Flora of Vietnam II. Vandeae

The paper continues publications of new data on orchid diversity in Vietnam (Averyanov and Gruss, 2018a-d; Averyanov et al., 2018a-e, 2019; Gruss et al., 2018) obtained in 2017–2018. It includes data on 4 orchid species new to science (Aerides phongthuyii, Cleisostoma uniseta, Macropodanthus brevidentatus and Schoenorchis tatonii) and 2 species new for the flora of Vietnam (Gastrochilus fuscopunctatus and Phalaenopsis malipoensis). The valid name, synonyms, type, citations of relevant regional taxonomic publications, data on ecology, phenology and distribution, estimated IUCN Red List status, studied specimens, brief taxonomic notes, and illustrations are provided for each recorded species. One new combination, Macropodanthus clausus (J.J. Sm.) Aver. (Sarcochilus clausus J.J. Sm.), is proposed.