oryzihumus oryzihumus oryzihumus is a gram-positive, aerobic and non-motile bacterial genus from the family of intrasporangiaceae. oryzihumus scientific classification domain: bacteria phylum: actinomycetota class: actinomycetia order: micrococcales family: intrasporangiaceae genus: oryzihumuskageyama et al. 2005 type species oryzihumus leptocrescenskageyama et al. 2005 species o. leptocrescens kageyama et al. 2005 o. soli kim et al. 2017 o. terrae lim et al. 2014