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.
Isolates of Streptomyces are frequently recognized by their chalky appearance and earthy odor.
Handle with care, but special precautions are not necessary
Kurylowicz et aL, 1975
Shirling and Gottlieb, 1972
white grain mycetoma