Achlya americana var. megasperma Crooks Dataset GBIF Backbone Taxonomy Rank VARIETY Classification kingdom Chromista phylum Oomycota class Peronosporea order Saprolegniales family Saprolegniaceae genus Achlya species Achlya americana Name Homonyms Achlya americana var. megasperma Crooks Achlya americana var. megasperma Crooks ex Cejp