hoeflea hoeflea hoeflea is a genus of gram-negative, strictly aerobic, oxidase- and catalase-positive, non-spore-forming, rod-shaped bacteria. hoeflea scientific classification domain: bacteria phylum: pseudomonadota class: alphaproteobacteria order: hyphomicrobiales family: rhizobiaceae genus: hoefleapeix et al. 2005 type species hoeflea marina species h. alexandrii palacios et al. 2006 h. anabaenae stevenson et al. 2011 h. halophila jung et al. 2013 h. marina peix et al. 2005 h. olei rahul et al. 2015 h. phototrophica biebl et al. 2006 "hoeflea prorocentri" yang et al. 2018 "hoeflea siderophila" sorokina et al. 2012