Corynebacterium diphtheria is
Ref: Harrisons 19th ed. pg. 978* C. diphtheriae is a Gram-positive bacillus that is unencapsulated, nonmotile, and nonsporulating.* The bacteria have a characteristic club-shaped bacillary appearance and typically form clusters of parallel rays, or palisades, that are referred to as "Chinese characters"
Gram-positive cocci
Gram-positive bacilli
Gram-negative cocci
Gram-negative bacilli
Bacteria