oryzihumus leptocrescens oryzihumus leptocrescens oryzihumus leptocrescens is a gram-positive bacterium species from the genus of oryzihumus which has been isolated from soil from japan. oryzihumus leptocrescens scientific classification domain: bacteria phylum: actinomycetota class: actinomycetia order: micrococcales family: intrasporangiaceae genus: oryzihumus species: o. leptocrescens binomial name oryzihumus leptocrescenskageyama et al. 2005 type strain jcm 12835nbrc 100762nrrl b-24347kv-628kv-641kv-656