Hairs and glands on sage leaf

Hairs and glands on sage leaf

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Caption: Sage leaf surface. Coloured Scanning Electron Micrograph (SEM) of hairs and glands on a leaf of the herb sage, Salvia officinalis. The top of the leaf is seen with its bumpy surface. On the surface are two types of hairs, called trichomes. Many thin multicellular hairs are seen which may serve a protective function for the plant, or reduce surface evaporation. Spherical structures are modified glandular hairs which secrete oils associated with the odour and essence of sage. The leaves of sage are used for cooking. They also have medicinal properties which reduce fever, cleanse the blood, relieve pain, and are antiseptic. Magnification: x100 at 6x6cm size.

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Keywords: botany, hair, herb, leaf, leaf hair, leaves, medicinal plant, nature, plant, plants, sage, salvia officinalis, trichome, type

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