The reduction division in ferns.

Abstract

The earlier work upon the spore-formation in Ferns having led to divergent resuits, a new investigation was begun in connection with other cytological work bearing upon the Mendelian hypothesis. During the progress of this work, Professor Farmer and J. E. S. Moore, in their preliminary communication to the Royal Society upon the reduction-phenomena of plants and animals, indicated the occurrence of a true reduction at the heterotype division in both plants and animals. The examination of the early stages of spore-formation in Ferns leaves no doubt that the essential features of the phenomena described by the above-mentioned authors are present also in this group of plants.