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SEM micrographs showing the abaxial (lower) epidermis of the Vinca leaves with an overview along the midvein and detailed view of the stomata. (a) V. minor, (b) V. major, (c) V. major var. variegata, (d) V. herbacea; A—aperture, Ec—epidermal cell, Gc—guard cell, Mv—midvein, Sc—subsidiary cell, arrowheads—stomata.
