Figure 4

Cryo-SEM micrographs of the adaxial (A,B) and abaxial (C,D) leaf surfaces in Syringa vulgaris and of the adaxial (E,G,H) and abaxial (F) leaf surfaces in Brassica oleracea. (A) Cuticular folds running between neighboring cells. (B,D) Glandular trichomes and cuticular folds running radially. (C) General view showing different surface features. CF, cuticular fold; FL, wax filament; GT, glandular trichome; ST, stoma; TU, wax tubule.