Peronosporales
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Noun | 1. | Peronosporales - order of chiefly parasitic lower fungi: Albuginaceae and Peronosporaceae and Pythiaceae fungus order - the order of fungi class Oomycetes, Oomycetes - nonphotosynthetic fungi that resemble algae and that reproduce by forming oospores; sometimes classified as protoctists family Peronosporaceae, Peronosporaceae - parasitic fungi: downy mildews Albuginaceae, family Albuginaceae - fungi that produce white sori resembling blisters on certain flowering plants family Pythiaceae, Pythiaceae - fungi having sporangia usually borne successively and singly at the tips of branching sporangiophores |
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