Black Piedra is caused by:: (A) Pityrosporum orbiculare, (B) Exophiala, (C) Trichosporon beigelii, (D) Piedraia hoae
Answer is D. Black piedra Caused by Piedraia hoae Gross-Discrete black, gritty, hard nodules on the hair of the scalp Dx- 10% KOH mount of the crushed nodule reveals dark septate hyphae with club shaped asci, each containing 2-8 ascospores