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XVII.—Contributions to the Knowledge of Zosterophyllum myretonianum Penhallow from the Lower Old Red Sandstone of Angus*

Published online by Cambridge University Press:  30 May 2017

K. M. Lele
Affiliation:
Birbal Sahni Institute, Lucknow
J. Walton
Affiliation:
University of Glasgow

Synopsis

Well-preserved compression material of Zosterophyllum myretonianum Penhallow from the Lower Old Eed Sandstone in Angus has yielded additional information about the structure of this plant, one of the earliest known types of vascular land plants. It is the earliest plant in which the structure of the epidermal cuticle, stomata and complete tracheids has been clearly demonstrated. The basal regions of the plant are found to consist of branching axes some with arrested or dormant side branches. Simple dichotomy into two equal and similarly orientated branches is rare. H-type branching and some modifications of it are of frequent occurrence in the basal region of the plant. Parts of this region of the plant have no stomata although a cuticle was present. The upright fertile axes rarely branched.

Type
Research Article
Copyright
Copyright © Royal Society of Edinburgh 1961

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Footnotes

*

This paper was assisted in publication by a grant from the Carnegie Trust for the Universities of Scotland.

References

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