Sterols and fatty acids of three harmful algae previously assigned as Chattonella

The sterol and fatty acids were investigated of three harmful marine algae previously regarded as Chattonella species. The lipids of Chloromorum toxicum are consistent with its inclusion in the Raphidophyceae. Both species of the new genus Verrucophora (Dictyochophyceae) contained the rare 27-norsterol occelasterol.