GROUPS AND SPECIES OF GENUS STREPTOMYCES 95 



1 pink (white to 



Streptomyces into sections, based upon the 

 color of the substrate mycelium. Each sec- 

 tion was divided into series, on the basis of 

 the coloi of the aerial mycelium. Each series 

 was divided into species. 



The genus was characterized by the pres- 

 ence or absence of spores, the arrangemenl 

 of spores, and the ramification and breaking 



10. Aerial myceli 



pink). 



Series Rost oflavus 



11. Aerial mycelium yellow with gray 



spot.-. 



Scries Flavus 



12. Aerial mycelium grayish. 



Series .1 urt US 



up of the substrate mycelium. The species (b) Substrate mycelium yellow to green- 

 were characterized by enzymatic reactions, yellow. 



antibiotic activity, and soluble pigments 13. Aerial mycelium gray-white, 



spreading through t ho substratum, depend- Series Flavoviridis 



ing on nutrition and pH. 14. Aerial mycelium white to lemon- 



AJthough Baldacci discussed the genus yellow, 



under the name "Actinomyces," he actually Series Virgatus 



meant Streptomyces, without recognizing it (c) Substrate mycelium yellow with green 



as such, since he made no mention of other and pinkish spots. 



species and othei genera. 



A. Actinomycetes cum sporophora solitaria 



vel congregata. 

 Section 1. Substrate mycelium colorless; 



scant development on agar, showing a 

 veiled cobweb-like appearance; limited 

 spornlat ion. 



1 . Aerial mycelium white. 



Series Albus 



2. Aerial mycelium sea-green. 



Series Griseus 

 '■\. Aerial mycelium green-azure. 



Series Viridis 

 1. Aerial mycelium azure. 



Seiies ( 'aeruh us 

 5. Aerial mycelium white-wine-lavender. 



Sei'ies Lavendulae 

 (i. Aerial mycelium light pink. 



Set ies Ros( us 

 7. Aerial mycelium gray. 



Series Diastaticus 



15. Aerial mycelium white to pink. 

 Serio Madura* 



(d) Substrate mycelium brown to black. 

 10. Aerial mycelium white to gray. 



Series Scabies 



17. Aerial mycelium red. 



Series Roseochromogent s 



18. Aerial mycelium yellow. 



Series Sulphureus 

 10. Aerial mycelium gray. 

 Series Antibioticus 



20. Aerial mycelium grayish-flesh-col- 

 ored. 



Sei'ies Griseoincarnatus 



(e) Vegetative mycelium brown to green- 

 brown. 



21 . Aerial mycelium gray. 



Series Intermedius 



(f) Vegetative mycelium brown. 



22. Aerial mycelium white to leather- 

 brown. 



Set ies Rimosus 



Seci ion II. Substrate mycelium colored; 



development generally abundanl on agar (g) Vegetative mycelium orange, 

 (creamy, lichenoid, etc.); delayed or par- 23. Aerial mycelium seashell pink 



tial sporulation. Series Fradiai 



(a) Substrate mycelium yellow to yellow- (hi Vegetative mycelium flesh-rose. 

 brown. 21. Aerial mycelium white. 



'.). Aerial mycelium white. Series Bostroemi 



Serio Albidoflavus (i) Vegetative mycelium red. 



