Trichomes, from the Greek meaning "growth of hair", are fine outgrowths or appendages on plants and certain protists. These are of diverse structure and function. Examples are hairs, glandular hairs, scales, and papillae. Algal trichomes Certain—usually filamentous—algae, have the terminal cell produced into an elongate "hair-like" structure called a trichome. The same term is applied to such structures in some cyanobacteria. Plant trichomes Aerial surface hairs Trichomes on plants… (More on Trichome)