Some Unusual Chrysophyceae Studied in the Electron Microscope

Abstract

SUMMARY: Three members of the Chrysophyceae are described, the general morphology being studied with the light microscope, but the details of the scale and bristle structure with the electron microscope. Mallomonas ouradion sp.nov. is at present unique in having several movable bristles on each scale. Chrysosphaerella brevispina Korshikov is shown to include C. rodhei Skuja. The peculiar bristle base is elucidated. This is the first record for the genus in Britain. Synura sphagnicola is shown to differ in several respects from other species of Synura. In all three genera, the chromatophore, which has been described as double, is shown to be single but strongly lobed. Replicas of the intact armour of S. echinulata are shown.