Arabidopsis thaliana
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Arabidopsis thaliana, the thale cress, mouse-ear cress or arabidopsis, is a small plant from the mustard family (Brassicaceae), native to Eurasia and Africa. Commonly found along the shoulders of roads and in disturbed land, it is generally considered a weed.
Botanical illustration
Scanning electron micrograph of a trichome, a leaf hair of A. thaliana, a unique structure made of a single cell
A double-flower mutant, first documented in 1873
Trichome
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Trichomes are fine outgrowths or appendages on plants, algae, lichens, and certain protists. They are of diverse structure and function. Examples are hairs, glandular hairs, scales, and papillae. A covering of any kind of hair on a plant is an indumentum, and the surface bearing them is said to be pubescent.
Flower bud of a Capsicum pubescens plant, with many trichomes
Fossil stellate hair (trichome) probably of an oak, in Baltic amber; image is about 1 mm wide.
Sticky trichomes of a carnivorous plant, Drosera capensis with a trapped insect, contain proteolytic enzymes
Glandular trichomes on Cannabis, rich in cannabinoids