<prompt> Citron bodies and boat or leaf-shaped pleomorphic organism in an exudate isClostridium welchiiClostridium edematiensClostridium septicumClostridium tetani  <response>: Clostridium septicum: citron bodies, boat or leaf-shaped polymorphic bacilli. Motile by peritrichous flagella. Saccharolytic and produce abundant gas. Produce alpha, beta, delta and gamma toxin. Gas gangrene, Braxy or malignant edema is caused. Reference: Textbook of Microbiology; Anathanarayan and panikers; 10th edition; Page no: 260 