Figure 4 from: Gang Z, Liu B, Rohwer JG, Ferguson DK, Yang Y (2021) Leaf epidermal micromorphology defining the clades in Cinnamomum (Lauraceae). PhytoKeys 182: 125-148. https://doi.org/10.3897/phytokeys.182.67289

Figure 4 Line-drawing displaying variation of the leaf upper epidermis a type I, displaying the non-reticulate periclinal wall, the polygonal cells, and the round to polygonal cell shape b type II, displaying the sinuous anticlinal wall, the irregular cell shape, and the reticulate periclinal wall c type II, displaying an extremely sinuous anticlinal wall, the irregular cell shape, and the reticulate periclinal wall d type II, displaying the straight or nearly so anticlinal wall, the polygonal cell shape, and the reticulate periclinal wall.