Morphology of Dendrostoma quercus from Quercus sp. (BJFC-S1547). A–C Habit of psedostromata on branches D Transverse section of pseudostroma E, H Habit of conidiomata on branches F Transverse section of conidioma G Longitudinal section through conidioma I Conidiogenous cells producing dimorphic conidia J Secondary conidia K Asci and ascospores L Ascospores M Primary conidia. Scale bars: 1 mm (A, H); 0.5 mm (B–G); 10 μm (I, K–M); 5 μm (J).