sphingomonas phyllosphaerae sphingomonas phyllosphaerae sphingomonas phyllosphaerae is a species of bacteria. it was first isolated from the phyllosphere of a leguminous tree, acacia caven, in central argentina. it is gram-negative, strictly aerobic, rod-shaped and motile. its type strain is fa2(t) (=lmg 21958(t)=cect 5832(t)). sphingomonas phyllosphaerae scientific classification domain: bacteria phylum: pseudomonadota class: alphaproteobacteria order: sphingomonadales family: sphingomonadaceae genus: sphingomonas binomial name sphingomonas phyllosphaeraerivas et al. 2004