the root (no rank)
Eukaryota (domain)
stramenopiles (kingdom)
Oomycetes (phylum)
Saprolegniales (order)
Saprolegniaceae (family)
[hide inferior taxa]
Achlya (genus)
Aphanomyces euteiches (species)
Saprolegnia (genus)
Thraustotheca clavata (species)