Figure 2

Stereo, light, and scanning micrographs of leaves of Iris ruthenica (a–f) and I. uniflora (g–l). Serrate (a,b) and entire (g,h) leaf margin. Hypostomatic (stomata is absent on adaxial surface but present on the abaxial surface of leaf) (c,d) and amphistomatic (stomata present on both adaxial and abaxial leaf epidermis) leaves (i,j) with anomocytic stomata. (e,f, k,l) Detailed leaf epidermal cell shape and sunken stomata on the leaf surface.