- Peronosporales, order Peronosporales - order of chiefly parasitic lower fungi: Albuginaceae and Peronosporaceae and Pythiaceae
--1 is a kind of fungus order
--1 is a member of Oomycetes, class Oomycetes
--1 has members:Peronosporaceae, family Peronosporaceae; Albuginaceae, family Albuginaceae; Pythiaceae, family Pythiaceae