Sundew leaf. Coloured scanning electron micrograph (SEM) of the sticky stalks (red) on the leaf of a cape sundew (Drosera capensis), a carnivorous plant. The stalks are tipped with a secretion that acts as a glue, trapping any insect that lands on the plant. Once an insect is trapped, the leaf curls around it. Digestive enzymes are then secreted, which convert the insect into nutrients for the plant. This ability allows the sundew to live in nutrient-poor soils, such as those found in marshland. Magnification: x18 at 6x7cm size.