Comparative fine-structural studies on five marine species of Pyramimonas (Chlorophyta, Prasinophyceae)

Abstract

A comparative ultrastuctural study on fivespecies of Pyramimonas occurring in waters surrounding San Juan Island, Washington, is provided. The species studied include P. amylifera, P. parkeae, P. aff. disomata, P. orientalis and P. aff. plurioculata. Particular attention is paid to body and flagellar scales as well as to other cytological detail, such as pyrenoid structure, which may be of use in delineating these species.