organisms see Clade Biota Wagner 2004 [Wiemann, de Queiroz, Rowe, Planavsky, Anderson, Gogarten, Turner & Gauthier 2020] Kingdom Protoctista Hogg, 1860 Phylum Chrysophyta Pascher (1914) see Class Chrysophyceae Fritsch (1927) Genus Hydrurus C.Agardh (1824), nom. cons.