Sunken stomata on leaf of sea holly

Sunken stomata on leaf of sea holly

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Caption: Scanning electron micrograph of the leaf surface of the sea holly Eryngium maritimum, showing the sunken stomata, which are an adaptation to drought. The plant grows on sand dunes exposed to high winds & sea spray. It is a dry & hostile environment with a highly porous soil. The stomata are pores that regulate gaseous exchange between the leaf & the atmosphere. Those of the sea holly are deeply set in order to limit transpiration. An additional adaptaion to a rigorous environment is the fine covering of wax across the leaf surface (white fluff). Mag:X650 (10x8 size).

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Keywords: botany, drought adapted, eryngium maritimum, leaf, leaves, nature, plant, plants, scanning electron micrograph, sem, stoma, surface

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