STEFAN DILLER / SCIENCE PHOTO LIBRARY STEFAN DILLER / SCIENCE PHOTO LIBRARY
Flax leaf stoma. Coloured scanning electron micrograph (SEM) of a stoma, one of many gas exchange pores found in the epidermis of plant leaves and stems. This one is part of the epidermal surface of a leaf of the flax or linseed plant (Linum usitatissimum).
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