Sphingomonas difficilis Dataset NCBI Taxonomy Rank SPECIES Classification phylum Pseudomonadota class Alphaproteobacteria order Sphingomonadales family Sphingomonadaceae genus Sphingomonas species Sphingomonas difficilis Name Synonyms Sphingomonas difficilis Feng et al. 2017 Homonyms Sphingomonas difficilis Sphingomonas difficilis Feng et al. 2017