Microbiology mycology e652246e Black coloured grains in mycetoma is produced by A Leptospira B Nocardia C Actinomadura D Phaecremonium High-Yield Explanation Leptospira, madurella, exophiala produce black colored colonies or grains in mycetoma Nocardia-white Phaecremonium -yellowish white Ref: Baveja 5th ed pg: 551