Figure 3.

Scanning electron micrographs of leaves: (A) Cross section of the revolute and polylobed leaf showing the deep and narrow laciniae with numerous trichomes (arrows) and two secretory ducts, one of each side of the central vascular bundle. (B) Detail of a leaf lobe exhibiting a secretory duct. In the laciniae, non-glandular trichomes and one glandular trichome presenting cuticle rupture (arrow) are evident. (C) Top view of the leaf adaxial surface. Note the long and filamentous non-glandular trichomes that emerge from laciniae. (D) Portion of a leaf showing the compact mesophile and two secretory ducts, one in the leaf lobe and the other near the central vascular bundle (arrow). (E) A biseriate glandular trichome of the vesicular monotype. Scale bars = 150 µm (A–D), 25 µm (E).