Stellate leaf hairs

Stellate leaf hairs

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Credit: DR JEREMY BURGESS/SCIENCE PHOTO LIBRARY

Caption: False colour scanning electron micrograph of stellate leaf hairs on the surface of the hoary mullein Verbascum pulverulentum. This is a perennial herbaceous wild plant, which grows in France. Germany & England. The stellate leaf hairs are typical of alpine plants exposed to strong light & drying winds. They serve a biological function for the leaf by limiting transpiration & reducing surface temperature. The density of the hairs lends the leaf a white appearance. It is held that the hairs were scrapped from the leaves, rolled like cotton & used as wicks in the lamps of the neolithic flint miners at Grimes Graves, Norfolk. Magnification: X 13 at 35mm size. Original is BW print b745/078.

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Keywords: alpine plant, botany, hoary mullein, leaf, leaf hair, leaves, nature, plant, plants, scanning electron micrograph, sem, verbascum pulverulentum, wick

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