Waxy coatings on leaves and other plant surfaces have been studied since DeBary's early work. Surface wax has assumed additional importance with the advent of systemic and herbicidal sprays. The retention and absorption of these sprays depend upon the waxy coatings and other properties of the epidermis. Earlier publications have pictured the first development of the cuticle and the extrusion of surface wax through it. None of our observations have demonstrated any channels associated with wax extrusion, and we conclude that it permeates the cellulose matrix of the primary epidermal wall in a softened form, which then hardens on the surface of the leaf.
Proceedings of the Iowa Academy of Science
©1958 Iowa Academy of Science, Inc.
Schieferstein, R. H. and Loomis, W. E.
"Growth and Differentiation of the Epidermal Wall,"
Proceedings of the Iowa Academy of Science, 65(1), 163-165.
Available at: https://scholarworks.uni.edu/pias/vol65/iss1/21