Anatomical and Biochemical Traits Related to Blue Leaf Coloration of Selaginella uncinata

Figure 3

Leaf epidermal cell shape of the three leaf types. (a) Freehand section photomicrographs of adaxial epidermis; (b) freehand section photomicrographs of abaxial epidermis; (c) SEM photomicrographs of adaxial epidermis; (d) SEM photomicrographs of abaxial epidermis; (e) blue S. uncinata leaf; (f) red S. uncinata leaf; and (g) S. kraussiana.