Arcanobacterium

A genus of nonmotile, facultatively anaerobic bacteria containing Gram-positive slender irregular rods, sometimes showing clubbed ends that may be in V formation with no filaments. These organisms are obligate parasites of the pharynx in farm animals and humans, occasionally causing lesions on the pharynx or skin. The type species is A. haemolyticum.

- A. haemolyticum a species that causes pharyngitis and chronic skin ulcers in humans as well as farm animals.

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Ar·ca·no·bac·te·ri·um (ahr-ka″no-bak-tērґe-əm) [L. arcanus secret + bacterium] a genus of irregular, rod-shaped, non–spore-forming, gram-positive bacteria of the family Actinomycetaceae; organisms are non-motile, facultatively anaerobic, and catalase-negative. The type species is A. haemolyґticum.