一、引言产色放线菌由Gasperini(1891)建立,最初命名为Streptothrix chromogena其后Lachner-Sandoval(1898)才改为现名——Actinomyces chromogenes。(?)(1941)以其主要特征——气生菌丝体微白或浅灰色,菌落深褐色,褐色或浅褐色,并在合成琼胶上产生深褐色可溶性色素,而肯定此种,并在鉴定手册中(1949)记载着除这 I. INTRODUCTION The chromogenic actinomycetes were established by Gasperini (1891) and were originally named Streptothrix chromogena. Lachner-Sandoval (1898) was then renamed - now Actinomyces chromogenes. (?) (1941) confirms this by its main feature, the aerial mycelium whitish or light gray, the colony dark brown, light brown or light brown, and the dark brown soluble pigment on synthetic agar In the handbook of identification (1949) records this addition