epibacterium ulvae epibacterium ulvae epibacterium ulvae is a gram-negative, rod-shaped and motile bacterium from the genus of epibacterium. it has been isolated from the alga ulva australis from clovelly in australia. epibacterium ulvae scientific classification domain: bacteria phylum: pseudomonadota class: alphaproteobacteria order: rhodobacterales family: rhodobacteraceae genus: epibacterium species: e. ulvae binomial name epibacterium ulvaepenesyan et al. 2013 type strain dsm 24752, egan u95, lmg 26464