"chrysophytes" see [unranked] core chrysophytes Class Phaeothamniophyceae R.A. Andersen & J.C. Bailey (1998) Order Phaeothamniales Bourr. (1954) Family Phaeothamniaceae Hansgirg (1886) Genus Phaeothamnion G. Lagerheim, in Wittrock & Nordst. (1884)