Li, Lin, Ai-Qun Hu, Qiu-Ping Wu, Kun-Lin Wu, Lin Fang, and Song-Jun Zeng. 2021. “Reconsideration of the Taxonomic Status of Bulbophyllum obtusangulum (Orchidaceae) from Southern China”. Phytotaxa 494 (2). Auckland, New Zealand:219–224. https://doi.org/10.11646/phytotaxa.494.2.4.