Waksman and Henrici, 1943


Colonies are slow growing, aerobic, Gram-positive, nonacid-fast, glabrous or chalky, heaped and folded, and white, tan, gray, brown, or black in color. Colonies often have an earthy odor. Filaments are extensively branched; aerial filaments are abundant and usually produce long chains of spores formed by fragmentation of the filaments.

Salient Characteristics

Isolates of Streptomyces are frequently recognized by their chalky appearance and earthy odor.

Laboratory Precautions

Handle with care, but special precautions are not necessary

Key References

Kurylowicz et aL, 1975
Shirling and Gottlieb, 1972


white grain mycetoma

Sensitivity Testing






Natural Habitat