azospirillaceae azospirillaceae the azospirillaceae are a family of bacteria from the order rhodospirillales. azospirillaceae scientific classification domain: bacteria phylum: pseudomonadota class: alphaproteobacteria order: rhodospirillales family: azospirillaceaehördt et al. 2020 genera azospirillum tarrand et al. 1979 (approved lists 1980) desertibacter liu et al. 2011 elstera rahalkar et al. 2012 inquilinus coenye et al. 2002 lacibacterium sheu et al. 2013 nitrospirillum lin et al. 2015 niveispirillum lin et al. 2014 rhodocista kawasaki et al. 1994 skermanella sly and stackebrandt 1999