Figure 1 from: Chen W-H, Guo S-W, Nguyen HQ, Chen L, Shui Y-M (2020) Two new taxa of Gesneriaceae in the karst regions in North Vietnam. In: Shui Y-M, Chen W-H, Ren M-X, Wen F, Hong X, Qiu Z-J, Wei Y-G, Kang M (Eds) Taxonomy of Gesneriaceae in China and Vietnam. PhytoKeys 157: 217-226. https://doi.org/10.3897/phytokeys.157.54697 - Chen, Wen-Hong (2020)