Fig. 5. Cryo-SEM micrographs of the glandular tips of tentacle-shaped trichomes in Roridula gorgonias after different treatments. (A) Intact voluminous, ovoid droplet of adhesive secretion after washing with aqua millipore. (B,C) Terminal gland covered with a fragmented layer of adhesive secretion after rinsing with ethanol. (D,E) Collapsed terminal gland with adhering fibrous formations of adhesive secretion residues after washing with chloroform. (F,G) Terminal gland after washing with acetone: the adhesive secretion is totally removed, and the glandular opening is clearly visible on the tip. Scale bars, 25 µm (A,B,D,F,G); 10 µm (C,E).