The taxonomy of the Chlorophyta. II

Abstract

The taxonomy of all the algal groups possessing both chlorophyll a and b is discussed for the levels above that of the family. Much of the discussion is related to previously conceived taxa but some new combinations are proposed. The subdivision of ‘green’ algae into Euglenophyta, Prasinophyta, Charophyta and Chlorophyta is discussed in the light of recent publications. The problem of further subdivision in the Chlorophyta is reviewed and the need stressed for more extensive electron microscopical and biochemical evidence. Until such data are available the author favours maintaining a large number of orders but also the rejection of those based on single characters.