Fig. 3.

Leaf anatomy of Nepenthes alata. (A) Longitudinal section of the N. alata leaf. (B) Anatomy of digestive zone with multicellular digestive gland (arrowhead); general view. (C) Waxy zone with typical lunate cell (arrowhead) without digestive glands that is responsible for preventing prey escape; general view. (D) Lid with prominent nectar gland (arrowhead). (E) Lamina of Nepenthes alata with palisade and spongious parenchyma; general view. (F) Detail of stomata (arrowhead) and small intercellular spaces (asterisk) with compact mesophyll in the pitcher. (G) Detail of stomata (arrowhead) and large intercellular spaces (asterisk) in lamina mesophyll.