tinomycetes, Izd. Akad. Nauk, U.S.S.R., Moskau, 1941, 51; Waksman, in Waksmari and Lechevalier, Actinomycetes and Their Antibiotics, Baltimore, 1953, 84.) fa.ri.no'sus. L. adj. /amiosws mealy. Vegetative growth: Colorless, smooth or rough colonies. Aerial mycelium: Powdery white on some media. Sporophores straight or wavy, singly or in clumps, forming no spirals. Organism produces segmented spores or oidiospores, cylindrical, 0.6 to 0.8 by 1.2 to 1.7 microns. Some form ellipsoidal or even spherical spores produced by swelling of cylindrical forms. Gelatin: Liquefaction. Synthetic agar: Aerial mycelium poorly developed and spotty. Milk: Coagulated and rapidly peptonized. Potato: Colorless growth. Aerial my- celium poorly developed. Sucrose readily inverted by most strains. Starch is actively hydrolyzed. Some strains grow on cellulose. Nitrites weakly produced from nitrates. Antagonistic properties: None or verj' weak. Source: Isolated from soil. Habitat: Soil. 81. Streptomyces albidus (Duche, 1934) Waksman, 1953. {Actinomyces albidus Duche, Encyclop^die Mycologique, Paris, 6, 1934, 266; Waksman, in Waksman and Le- chevalier, Actinomycetes and Their Anti- biotics, Baltimore, 1953, 84.) al'bi.dus. L. adj. albidus white. Aerial mycelium: Whitish but not snow- white. Sporophores long, open spirals. Spherical to ellipsoidal spores. Soluble pig- ment produced in synthetic and other media. Gelatin: Cream-colored growth. No sol- uble pigment. Rapid liquefaction. Agar: Colorless growth with slightly greenish reverse. Aerial mj^celium white. Soluble yellowish pigment. Synthetic agar: Colorless growth; some drops of colorless guttation. Aerial my- celium white. Yellowish pigment. Milk: Cream-colored growth. Weakly co- agulated, rapidlj' peptonized. Cheesy odor. Potato: Flat, colorless growth. Aerial mycelium white. No soluble pigment. Starch is actively hydrolj'zed. Good growth on cellulose. Nitrites slowly produced from nitrates. Odor: Strong, earthy. Antagonistic properties: Strong. Relationships to other species: Closely related to Streptomyces albus but differs from it by its more delicate growth and by its reverse that is often yellowish brown. Also related to Streptomyces microflavus Krainsky but differs from Krainsky's or- ganism in that its growth is never rose-yel- low and by its abundant growth on potato. Source: The original culture was obtained under the name of Actinomyces microflavus (not Actinomyces microflavus Krainsky) from the Baarn Culture Collection. Habitat: Unknown. 82. Streptomyces cinnamoneus Bene- dict, 1953. {Streptomyces cinnamoneus Bene- dict, Dvonch, Shotwell, Pridham and Lin- denfelser {nomen nudum), Antibiotics and Chemotherapy, 2, 1952, 591; Benedict, in Waksman and Lechevalier, Actinomycetes and Their Antibiotics, Baltimore, 1953, 85.) cin.na.mo'ne.us. Gr. neut.n. cinnamon cinnamon; M.L. adj. cinnamoneus pertain- ing to cinnamon. Description prepared by R. G. Benedict for use in Waksman and Lechevalier, Ac- tinomycetes and Their Antibiotics, Balti- more, 1953. Vegetative growth: Large colonies with irregular margins. Aerial mycelium: White, graduallj- chang- ing to flesh color. No spirals. Spores globose, 0.6 micron in diameter. Gelatin: White flocculent growth. No aerial mycelium. No soluble pigment. Rapid liquefaction. Agar: Cream to light lemon-j^ellow growth. No aerial mycelium. Synthetic agar: Colorless to white to cream-colored growth. Aerial mycelium white to light cinnamon. Starch: Colorless to brownish growth. Aerial mycelium white. Glucose agar: Colorless growth with light greenish yellow to dull yellowish orange
