Beiträge zur Kenntnis der Gattungen Lyophyllum und Calocybe (Agaricales, Basidiomycetes)

VI. Die Entwicklung der siderophilen Granulation

Abstract

Seven species of Lyophyllum and Calocybe have been investigated to pinpoint time and location of the formation of siderophilous (“carminophilous”) granules in their basidia, and efforts have been made to follow the development of those granules by light and electron microscopy. They appear between karyogamy and first telophase as tiny points and grow into typical granules. Sometimes they develop into larger irregularly shaped masses. The siderophilous granules are formed within the endoplasmic reticulum. They contain a loosely woven fibrillar lattice that quickly becomes denser and finally changes into a dense mass. Some dense granules expand into the irregularly shaped masses that can be seen with the light microscope.