algitalea algitalea algitalea is a gram-negative, strictly aerobic, rod-shaped, non-spore-forming genus of bacteria from the family of flavobacteriaceae with one known species (algitalea ulvae). algitalea ulvae has been isolated from the alga ulva pertusa. algitalea scientific classification domain: bacteria phylum: bacteroidota class: flavobacteria order: flavobacteriales family: flavobacteriaceae genus: algitaleayoon et al. 2015 type species algitalea ulvae species a. ulvae