beijerinckia derxii beijerinckia derxii beijerinckia derxii is a nitrogen fixing bacteria from the genus of beijerinckia. beijerinckia derxii scientific classification domain: bacteria phylum: pseudomonadota class: alphaproteobacteria order: hyphomicrobiales family: beijerinckiaceae genus: beijerinckia species: b. derxii binomial name beijerinckia derxiitchan 1957 type strain acm 1968, atcc 49361, ccug 53677, dsm 2328, kctc 12016, lmg 3899, q13, uqm 1968, wr-219 synonyms beijerinckia venezuelae