Micromorphology of Xylodon vesiculosus (PDD-18112, isotype): A vertical section through basidioma B subicular hyphae C excerpt of tramal hyphae to hymenium and skeletoid hyphae D bundle of projecting aculeal hyphae E smooth and variously encrusted aculeal hyphae F capitate cystidia G portion of hymenium and subhymenium H basidioles J basidia K basidiospores. Scale bars: 250 µm (A); 10 μm (B–J); 5 μm (K).