hymenobacter flocculans hymenobacter flocculans hymenobacter flocculans is a bacterium from the genus of hymenobacter which has been isolated from a uranium mine waste water treatment system. hymenobacter flocculans scientific classification domain: bacteria phylum: bacteroidota class: cytophagia order: cytophagales family: hymenobacteraceae genus: hymenobacter species: h. flocculans binomial name hymenobacter flocculanschung et al. 2011 type strain a2-50a, cip 110139, lmg 25699