Rod-shaped bacteria Bacilli divide only across their short axis, so there are fewer groupings of bacilli than of cocci Single bacillus Single bacillus Diplobacilli 4b) D. plubucillus strepto bacilli Streptobacillus Coccobacillus Cocecbaci lusBacilli divide only across their short axis, so there are fewer groupings of bacilli than of cocci. Rod-shaped bacteria Diplobacilli streptobacilli Single bacillus Coccobacillus