TABLE 2.

Identification of the S. anginosus group^a

Test	S. anginosus			S. constellatus			S. intermedius
				subsp. constellatus		subsp. pharyngis
Hemolysis	Beta-hemolytic	Non-beta-hemolytic	Non-beta-hemolyticb	Beta-hemolytic	Non-beta-hemolytic	Beta-hemolytic	Beta-hemolytic	Non-beta-hemolytic
Lancefield antigenc	C, F, G, N	A, C, F, G, N	F, N	F, N	F, N	C	N	N
β-d-Fucosidase	−	−	−	−	−	+	+	+
β-N-Acetylglucosaminidase	v	−	−	−	−	+	+	+
β-N-Acetylgalactosaminidase	−	−	−	−	−	+	+	+
α-N-Acetylneuramidase	−	−	−	−	−	−	+	+
β-Galactosidase	+	−	−	−	−	+	+	+
β-Glucosidase	+	+	+	−	−	+	v	v
α-Glucosidase	−	v	+	+	+	+	+	+
Hyaluronidase	+	−	−	+	+	v	+	+
Amygdalin (acidification)	+	+	+	v	v	+	v	v
Lactose (acidification)	+	+	+	v	v	+	+	+
Mannitol (acidification)	−	−	+	−	−	−	−	−
Raffinose (acidification)	−	−	+	−	−	−	−	−

^aData from references 14, 65-67, and 129-135. +, positive reactions ≥92% of strains; −, positive reaction ≤8% of strains; v, variable reactions positive in 8 to 91% of strains.

^bMotile variant described in reference 14.

^cN, no antigen.