Hominimerdicola is a genus of obligately anaerobic, Gram-positive bacteria in the family Oscillospiraceae. The type species is Hominimerdicola aceti, whose type strain was isolated from human feces. The genus contains three species with validly published names.
Taxonomy The name combines the Latin words homo, meaning a human being, merda, meaning dung, and the suffix -cola, meaning an inhabitant. The type strain of H. aceti was previously identified as "Ruminococcus bicirculans", a name that was not validly published. Genome-based analyses supported its placement in a separate genus from Ruminococcus. The original description assigned Hominimerdicola to the family Ruminococcaceae, whereas the current LPSN classification places it in Oscillospiraceae. In 2026, Hominimerdicola intestinalis was described from human feces and Ruminococcus albus was transferred to the genus as Hominimerdicola alba. Ruminococcus albus is consequently treated as a homotypic synonym of H. alba.
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