Bacillus circulans

Bacillus circulans is a soil-dwelling human pathogen which has been associated with 'septicemia, mixed abscess infections, and wound infections', as well as with meningitis. Gram-positive, Gram-variable or Gram-negative. Positive spore stain result. Straight, occasionally curved rods, 2.0-4.2 x 0.5-0.8 μm, motile by peritrichous flagella. Has ellipsoidal spores which are subterminal or terminal; swelling the sporangia. These are 'centrally located' and either cylindrical or 'Kidney-shaped'.