Critical survey of a wide series of foliage leaves shows a fairly close relation between mesopyll organization and intervascular distance. Among Dicotyledons there is a close correlation between relative amount of leaf tissue that is horizontally arranged in the blade in comparison with that having cells elongated at right angles to the epidermis.
Proceedings of the Iowa Academy of Science
©1936 Iowa Academy of Science, Inc.
Wylie, Robert B.
"A Factor in the Distribution of Minor Veins in Dicotyledon Leaves,"
Proceedings of the Iowa Academy of Science, 43(1), 159-159.
Available at: https://scholarworks.uni.edu/pias/vol43/iss1/25