the root (no rank)
Eukaryota (domain)
stramenopiles (kingdom)
Oomycetes (phylum)
Saprolegniales (order)
Saprolegniaceae (family)
Saprolegnia (genus)
[hide inferior taxa]
Saprolegnia diclina (species)
Saprolegnia ferax (species)
Saprolegnia monoica (species)