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Document Type

Research

Abstract

The primary object of this investigation is to present the values for vein length per unit area in a number of grasses growing in their natural habitats, and to this end no material from greenhouses or from cultivated fields has been used in this study though a number of such forms have been surveyed. The use of vein length per unit area as an expression of the degree of vascularization has been used for several years. Schuster (1910) was one of the early workers to measure the venation in monocotyledon leaves. His table lists 29 species only one of which is from the Gramineae (Zea Mays vein length in mm per sq mm 13.5) and gives distances between longitudinal and between cross veins besides the vein length per unit area. Recently studies made on dicotyledon leaves by Plymale and Wylie (1944) for six species of woody dicots average 102 centimeters per square centimeter. Philpott (1947) found an average vein length of 97.7 centimeters per square centimeter for forty species of Ficus leaves.

Publication Date

1950

Journal Title

Proceedings of the Iowa Academy of Science

Volume

57

Issue

1

First Page

131

Last Page

134

Copyright

© Copyright 1950 by the Iowa Academy of Science, Inc.

Language

EN

File Format

application/pdf

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