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Order, Please! Uncertainty In The Ordinal-Level Classification Of Chlorophyceae, Karolina Fucikova, Paul O. Lewis, Suman Neupane, Kenneth G. Karol, Louise A. Lewis

Biological and Physical Sciences Department Faculty Works

Background. Chlorophyceae is one of three most species-rich green algal classes and also the only class in core Chlorophyta whose monophyly remains uncontested as gene and taxon sampling improves. However, some key relationships within Chlorophyceae are less clear-cut and warrant further investigation. The present study combined genome-scale chloroplast data and rich sampling in an attempt to resolve the ordinal classification in Chlorophyceae. The traditional division into Sphaeropleales and Volvocales (SV), and a clade containing Oedogoniales, Chaetopeltidales, and Chaetophorales (OCC) was of particular interest with the addition of deeply branching members of these groups, as well as the placement of several …