Culture of streptococcus viridans resemble
Staphylococcus
Streptococcus pyogenes
Pneumococcus
Streptococcus faecalis
Streptococcus viridans and Streptococcus pneumoniae are alpha hemolytic. On blood agar, after incubation for 18 hours, the colonies are small (0.5-1mm), dome-shaped and glistening, with an area of green discolouration around them, resembling colonies of viridans streptococci. Reference: Textbook of Microbiology; Anathanarayan and panicker's; 10th edition; Page no: 224
Bacteriology