Section through leaf of marram grass

Section through leaf of marram grass

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Caption: Marram grass leaf. Light micrograph of a cross section through a partly closed (unravelled) leaf of Marram grass, Ammophila arenaria. The deeply grooved leaf is thrown into folds (at centre) and it uncurls when mature so that the folds do not face the centre. The folds conserve water and withstand salt, and prevent excessive evaporation. Round vascular bundles (yellow) are visible inside each fold, serving to transport food and water through the leaf. Spines on the folds discourage animals from eating the leaf. Marram grass is important in coastal ecology, since it is one of the commonest species in Britain to stabilize sand dunes. Magnification: x14 at 35mm size.

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Keywords: ammophila arenaria, botany, grass, leaf, leaves, light micrograph, marram, marram grass, nature, of marram grass, plant, plants

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