Microscopic characters of Xylaria hypoxylon (JF 04258). A. Immature and mature asci in dilute chlorazol black. B–C. Apical apparati of immature (B) and mature (C) asci in Melzer’s reagent. D. Ascospores in water showing ventral germ slits. E. (CBS 121679). Culture on OA. F–H. Ascospores in water, showing variations in germ slit morphology. I–J. Conidiogenous cells (I) and conidia (J) from a stroma at the asexual stage (in 1 % SDS). Bars: E = 1 cm; A = 20 µm; D, I–J = 10 µm; B–C, F–H = 5 µm.