herbaspirillum hiltneri herbaspirillum hiltneri herbaspirillum hiltneri is a gram-negative bacterium of the genus herbaspirillum isolated from surface-sterilized wheat roots. it was collected in the oberpfalz in germany. herbaspirillum hiltneri scientific classification domain: bacteria phylum: pseudomonadota class: betaproteobacteria order: burkholderiales family: oxalobacteraceae genus: herbaspirillum species: h. hiltneri binomial name herbaspirillum hiltnerirothballer et al. 2006 type strain ccug 54573, cip 109904, dsm 17495, lmg 23131, n3, rothballer n3