THE ULTRASTRUCTURE OF LICHENS V. HYDROTHYRIA VENOSA, A FRESHWATER LICHEN

Authors


  • We thank Miss Nancy Mangini for her help as a National Science Foundation Undergraduate Research Participant in a portion of this study. We express our appreciation also to Dr Gilbert Friedell of the Pathology Department of St Vincent Hospital, Worcester, for use of the Zeiss electron microscope. Support for this investigation was provided by the National Science Foundation.

Summary

The fine structure of the aquatic lichen Hydrothyria venosa was investigated from collections made in the summer and fall. The phycobiont lacked plastoglobuli in the summer but did contain them in the fall. Polyglucoside granules, structures not found previously in lichenized blue-green algae, were present in the phycobiont. The mycobiont lacked ellipsoidal bodies, structures that have been found in almost all previously studied lichen fungi.

Ancillary