STEFAN DILLER / SCIENCE PHOTO LIBRARY STEFAN DILLER / SCIENCE PHOTO LIBRARY
Cocoa tree (Theobroma cacao) trichomes, scanning electron micrograph (SEM). These trichomes are stellate (star-shaped), and are located on the surface of a closed flower bud. Trichomes are specialised structures that may perform several functions, from glandular secretions, preventing water loss, or deterring animals from eating the plant.
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