POLYPHYLY OF CHAETOPHORA AND STIGEOCLONIUM WITHIN THE CHAETOPHORALES (CHLOROPHYCEAE), REVEALED BY SEQUENCE COMPARISONS OF NUCLEAR‐ENCODED SSU rRNA GENES1
1. Biozentrum K?ln, Botanisches Institut, Universit?t zu K?ln, Zülpicher Str. 47b, 50674 K?ln, Germany;2. Department Limnology, University of Vienna, Althanstr. 14, A‐1090 Vienna, Austria