| Noun | 1. | order Blastocladiales - fungi that carry out asexual reproduction by thick-walled resting spores that produce zoospores upon germination; sometimes placed in class Oomycetes fungus order - the order of fungi Chytridiomycetes, class Chytridiomycetes - a class of mostly aquatic fungi; saprophytic or parasitic on algae or fungi or plants Blastodiaceae, family Blastodiaceae - a family of saprobic fungi of order Blastocladiales |