Fiechter, E/ Honegger, R 1988: Seasonal variations in the fine structure of Hypogymnia physodes (lichenized Ascomycetes) and its Trebouxia photobiont. - Plant Systematics and Evolution158(2-4): 249-263. [RLL List # 137 / Rec.# 5631] Keywords: HYPOGYMNIA/ TEM/ ULTRASTRUCTURE/ SEASONAL VARIATION/ TREBOUXIA
Abstract: 6 figures. [Samples were obtained near Zurich, Switzerland, for LM and TEM studies. "Highest germination rates and intense aplanospore formation were observed in January, highest particle densities in both external and internal fracture faces of the plasma membrane in March. Lipids and starch were most abundant in spring to early summer. In summer and autumn numerous photobiont cells died off."]