"Clostridium facile" Liu et al. 2021 Dataset NCBI Taxonomy Classification kingdom Bacillati phylum Bacillota class Clostridia order Eubacteriales family Clostridiaceae genus Clostridium species Clostridium facile Name Homonyms Clostridium facile "Clostridium facile" Liu et al. 2021 Clostridium facile Liu et al. 2022