(nocardia dassonvillei) Any bacterial organism that can be assigned to the species Nocardia dassonvillei.

(nocardia dassonvillei) A species of aerobic, Gram-positive, rod shaped bacteria assigned to the phylum Actinobacteria. This species is spore forming, nonacid-fast, urease negative, catalase positive, hydrolyzes starch, gelatin, esculin, xanthine, and hypoxanthine, reduces nitrate, and produces an aerial hyphae and substrate mycelium that fragments into coccoid elements. N. dassonvillei is found in the environment including mildewed grain and in is pathogenic in humans, though cases are rare.