nocardioides dubius nocardioides dubius nocardioides dubius is a gram-positive bacterium from the genus nocardioides which has been isolated from alkaline soil in kwangchun, korea. nocardioides dubius scientific classification domain: bacteria phylum: actinomycetota class: actinomycetia order: propionibacteriales family: nocardioidaceae genus: nocardioides species: n. dubius binomial name nocardioides dubiusyoon et al. 2005 type strain cip 109028dsm 19084jcm 13008kctc 9992ksl-104