Li , S., B. Pan, Z. B. Xin, Z. J. Huang, and F. Wen. 2020. “Petrocodon Ionophyllus, a New Species of Gesneriaceae from the Limestone Areas of South China”. Rheedea 30 (1): 150-58. https://doi.org/10.22244/rheedea.2020.30.01.09.