the following information is not yet verified
Gram negative plump rods,

1-2 µm,

nearly often square ends,

often very short diplobacilli, occasionally occurring in short chains.

May show variation in size and shape, often with giant forms and filamentous forms, especially in old cultures..

Obligate aerobic

BA: colonies are 1 mm after 24 hours, circular surface, unpigmented, and no corroding in the agar

Non-hemolytic.

Some strains are very mucoid.

McConkey: variable

BBAØ: no growth

James Versalovic et al.(2011) Manual of Clinical Microbiology 10th Edition