Selected common members of the human intestinal microbiota
| Phylum . | Class . | Order . | Genus . | Gram . | Anaerobe . |
|---|---|---|---|---|---|
| Firmicutes | Bacilli | Bacillales | Gemella | + | Facultative |
| Staphylococcus | |||||
| Lactobacillales | Enterococcus | ||||
| Lactobacillus | |||||
| Streptococcus | |||||
| Clostridia | Clostridiales | Blautia | + | Obligate | |
| Clostridium | |||||
| Eubacterium | |||||
| Faecalibacterium | |||||
| Ruminococcus | |||||
| Erysipelotrichia | Erysipelotrichiales | Erysipelatoclostridium | + | Obligate | |
| Holdemania | |||||
| Negativicutes | Acidaminococcales | Acidaminococcus | − | Obligate | |
| Phascolarctobacterium | |||||
| Veillonellales | Megasphaera | ||||
| Veillonella | |||||
| Bacteroidetes | Bacteroidia | Bacteroidales | Bacteroides | − | Obligate |
| Prevotella | |||||
| Proteobacteria | Gammaproteobacteria | Enterobacteriales | Escherichia | − | Facultative |
| Klebsiella | |||||
| Actinobacteria | Actinobacteria | Actinomycetales | Actinomyces | + | Facultative |
| Bifidobacteriales | Bifidobacterium | ||||
| Verrucomicrobia | Verrucomicrobiae | Verrucomicrobiales | Akkermansia | − | Obligate |
| Phylum . | Class . | Order . | Genus . | Gram . | Anaerobe . |
|---|---|---|---|---|---|
| Firmicutes | Bacilli | Bacillales | Gemella | + | Facultative |
| Staphylococcus | |||||
| Lactobacillales | Enterococcus | ||||
| Lactobacillus | |||||
| Streptococcus | |||||
| Clostridia | Clostridiales | Blautia | + | Obligate | |
| Clostridium | |||||
| Eubacterium | |||||
| Faecalibacterium | |||||
| Ruminococcus | |||||
| Erysipelotrichia | Erysipelotrichiales | Erysipelatoclostridium | + | Obligate | |
| Holdemania | |||||
| Negativicutes | Acidaminococcales | Acidaminococcus | − | Obligate | |
| Phascolarctobacterium | |||||
| Veillonellales | Megasphaera | ||||
| Veillonella | |||||
| Bacteroidetes | Bacteroidia | Bacteroidales | Bacteroides | − | Obligate |
| Prevotella | |||||
| Proteobacteria | Gammaproteobacteria | Enterobacteriales | Escherichia | − | Facultative |
| Klebsiella | |||||
| Actinobacteria | Actinobacteria | Actinomycetales | Actinomyces | + | Facultative |
| Bifidobacteriales | Bifidobacterium | ||||
| Verrucomicrobia | Verrucomicrobiae | Verrucomicrobiales | Akkermansia | − | Obligate |