family Rhizobiaceae, Rhizobiaceae - a small family of rod-shaped bacteria

division Eubacteria - one-celled monerans having simple cells with rigid walls and (in motile types) flagella

Bacillaceae, family Bacillaceae - typically rod-shaped usually gram-positive bacteria that produce endospores

family Myxophyceae, family Schizophyceae, Myxophyceae, Schizophyceae - former terms for Cyanophyceae

family Nostocaceae, Nostocaceae - blue-green algae

family Oscillatoriaceae, Oscillatoriaceae - blue green algae

family Pseudomonodaceae, Pseudomonodaceae - rod-shaped gram-negative bacteria; include important plant and animal pathogens

Athiorhodaceae, family Athiorhodaceae - small motile sulphur bacteria

family Thiobacteriaceae, Thiobacteriaceae - free-living coccoid to rod-shaped bacteria that derive energy from oxidizing sulfur or sulfur compounds

family Spirillaceae, Spirillaceae - rigid spirally curved elongate bacteria

Bacteroidaceae, family Bacteroidaceae - family of bacteria living usually in the alimentary canal or on mucous surfaces of warm-blooded animals; sometimes associated with acute infective processes

Corynebacteriaceae, family Corynebacteriaceae - a large family of mostly gram-positive and aerobic and nonmotile rod-shaped bacteria of the order Eubacteriales

Enterobacteriaceae, family Enterobacteriaceae - a large family of gram-negative rod-shaped bacteria of the order Eubacteriales

family Rickettsiaceae, Rickettsiaceae - microorganism resembling bacteria inhabiting arthropod tissues but capable of causing disease in vertebrates

Chlamydiaceae, family Chlamydiaceae - gram-negative parasites in warm-blooded vertebrates

family Mycoplasmataceae, Mycoplasmataceae - pleomorphic gram-negative nonmotile microorganism similar to both viruses and bacteria; parasitic in mammals

Actinomycetaceae, family Actinomycetaceae - filamentous anaerobic bacteria

family Streptomycetaceae, Streptomycetaceae - higher bacteria typically aerobic soil saprophytes

family Mycobacteriaceae, Mycobacteriaceae - a family of bacteria

family Myxobacteriaceae, family Polyangiaceae, Myxobacteriaceae, Polyangiaceae - bacteria living mostly in soils and on dung

family Micrococcaceae, Micrococcaceae - spherical or elliptical usually aerobic eubacteria that produce yellow or orange or red pigment; includes toxin-producing forms as well as harmless commensals and saprophytes

family Lactobacillaceae, family Lactobacteriaceae, Lactobacillaceae, Lactobacteriaceae - lactic acid bacteria and important pathogens; bacteria that ferment carbohydrates chiefly into lactic acid

family Spirochaetaceae, Spirochaetaceae - large coarsely spiral bacteria; free-living in fresh or salt water or commensal in bodies of oysters

family Treponemataceae, Treponemataceae - small spirochetes some parasitic or pathogenic

family - (biology) a taxonomic group containing one or more genera; "sharks belong to the fish family"