amorphus (bacterium) amorphus (bacterium) amorphus is a genus of bacteria from the order of hyphomicrobiales. amorphus scientific classification domain: bacteria phylum: pseudomonadota class: alphaproteobacteria order: hyphomicrobiales family: amorphaceae genus: amorphuszeevi ben yosef et al. 2008 type species amorphus coralli species a. coralli a. orientalis a. suaedae