Gelatin stab: Liquefaction, with small cream-colored masses in bottom of tube. Agar: Restricted, wrinkled, cream-coloi-ed growth. Synthetic agar: Growth abundant, heavy, spreading, raised, light, becoming dark, almost black. Aerial mycelium white, turn- ing dull gray. Starch agar: Abundant, brownish, glossy growth. Glucose agar: Growth spreading, color- less, wrinkled, center elevated, edge lich- enoid, becoming brown. Glucose broth: Small, colorless colonies in bottom of tube. Litmus milk: Cream-colored ring; coagu- lated; peptonized, becoming alkaline. Potato: Growth abundant, moist, wrin- kled, cream-colored with green tinge. The pigment formed is not soluble. Starch is hydrolyzed. Nitrites produced from nitrates. Aerobic. Optimum temperature, 37° C. Antagonistic properties: Strongly an- tagonistic; some strains show only anti- fungal activity; some strains produce magnamycin. Source: Lsolated many times from the deeper soil layers. Habitat: Common in subsoil. 97. Streptoniyces funiosus (Krassilni- kov, 1941) Waksman, 1953. (Actinomyces fumosus Krassilnikov, Guide to the Actino- mycetes, Izd. Akad. Nauk, U.S.S.R., Moskau, 1941, 58; Waksman, in Waksman and Lechevalier, Actinomycetes and Their Antibiotics, Baltimore, 1953, 92.) fu.mo'sus. L. adj. fumosus full of smoke, smoky. Aerial mycelium: Sporophores straight; spores cylindrical, 0.7 by 1.5 to 2.0 microns, later round. Gelatin: Liquefaction. Agar: Dark brown growth; aerial my- celium white. Medium brown-colored. Synthetic agar: Dark brown growth. Pig- ment not soluble. Aerial mycelium well developed, cottony, dusty colored, occa- sionally gray-white. Milk: Not coagulated; slowly liquefied with production of a dark brown to almost black pigment. Potato: No growth, or only faint dark gray aerial mycelium. Sucrose weakly inverted. Starch is actively hydrolyzed. No growth on cellulose. Antagonistic properties: None. Source: Isolated from soil. Habitat: Soil. 98. Streptoniyces lipmanii (Waksman and Curtis, 1916) Waksman and Henrici, 1948. {Actinomyces li-pmanii Waksman and Curtis, Soil Sci., 7, 1916, 123; Waksman and Henrici, in Manual, 6th ed., 1948, 952.) lip.ma'ni.i. M.L. gen. noun lipmanii of Lipman; named for Prof. J. G. Lipman of the New Jersey Agr. Exp. Station. Aerial mycelium: Straight, branching mycelium and hyphae. Conidia ellipsoidal, 0.8 to 1.1 by 1.0 to 1.5 microns. Gelatin stab: Liquefaction, with cream- colored, flaky sediment. Agar: Yellow, glossy, radiately wrinkled growth. Synthetic agar: Growth abundant, raised, colorless, becoming light brown and wrin- kled. Aerial mycelium white, turning gray. Starch agar: Transparent growth, be- coming dark with age. Glucose agar: Light yellow, irregular, spreading growth. Glucose broth: White ring, with abun- dant, colorless flaky sediment. Litmus milk: Cream-colored ring; coagu- lated; peptonization with alkaline reaction. Potato: Abundant, cream-colored, wrin- kled growth. The pigment formed is not soluble. Starch is hydrolyzed. Nitrites produced from nitrates. Aerobic. Optimum temperature, 25° C. Antagonistic properties: Good, though some strains show no activity. Source : Isolated many times from a vari- ety of soils. Habitat: Common in soil. 99. Streptoniyces hygroscopicus (Jen- sen, 1931) Waksman and Henrici, 1948. {Actinomyces hygroscopicus Jensen, Proc.
