organisms see Clade Biota Wagner 2004 [Wiemann, de Queiroz, Rowe, Planavsky, Anderson, Gogarten, Turner & Gauthier 2020] Kingdom Protoctista Hogg, 1860 Phylum Oomycota Arx (1967) Class Peronospora see Order Peronosporales Genus Phytophthora de Bary (1876) Phytophthora infestans (Mont.) de Bary (1876)