Caption: Rosemary leaf upper surface (Rosmarinus officinalis). The upper leaf surface contains numerous multicellular, glandular and non-glandurlar trichomes (branched hairs). Shown here are numerous short glandular trichomes (round) and one non-glandular branched trichome. The small glandular trichomes (round) are seen apposed closely to the leaf surface. They contain the volatile oil of the rosemary plant. Leaf trichomes / hairs serve as a protective function against pests and also helps to reduce leaf evaporation. Rosemary is a woody, perennial herb with fragrant needle-like leaves. It is a member of the mint family Lamiaceae, which also includes many other herbs. Fresh and dried leaves of rosemary are used in traditional Mediterranean cuisine as a herb. Rosemary is extremely high in iron, calcium, and Vitamin B6. Carnosic acid, found in rosemary, may shield the brain from free radicals, lowering the risk of strokes and neurodegenerative diseases like Alzheimer's and Lou Gehrig's. Rosemary contains a number of potentially biologically active compounds, including the antioxidants, carnosic acid and rosmarinic acid. Other bioactive compounds include caffeic acid, ursolic acid, betulinic acid, rosmaridiphenol, and rosmanol.
Magnification*: x70
Type: SEM
Copyright 2008 Dennis Kunkel Microscopy, Inc.
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