Dechloromonas denitrificans
Dechloromonas denitrificans is a gram negative , N2O-producing motile bacterium with a polar flagellum from the genus of "Dechloromonas" which was isolated from the earthworm Aporrectodea caliginosa . 
<triplet> Dechloromonas <subj> gram negative <obj> Gram staining