Figure 2 from: Wang T, Xiao B, Liu E-D, Nguyen KS, Duan J-Q, Wang K-L, Yan Y-H, Xiang J-Y (2020) Rediscovery of Angiopteris tonkinensis (Marattiaceae) after 100 years, and its revision. PhytoKeys 161: 1-9. https://doi.org/10.3897/phytokeys.161.54912

Figure 2 Morphological observation. Protomarattia tonkinensis (BX19001): A habit B frond C, E, F, G, H, M, O sporangia D rhizome N scale of stipe P exospores. Protomarattia tonkinensis (AT1-2): I whole plant J rhizome K stipe L sporangia. Archangiopteris tamdaoensis (SG2765): Q, U whole plant R frond S, T sporangia; Archangiopteris tamdaoensis (Ching 1958): V whole plant W, X1 sporangia X2 exospores X3 scale.