Stromata formed within bud leaves or erumpent through substrate, composed of hyphal tissue arranged in parallel. Anamorph: Fusarium-like. Conidiomata absent. Sporodochia with a hymenium of branched conidiophores with conidiogenous cells solitary or whorls of 2–3. Conidiogenous cells on SNA (18.5)–22–26.5(–31) μm long, ± cylindrical but tapering towards the apex, 3–4 μm wide at the base and 2–2.5 μm wide at the apex; on PDA to 45 μm long. Microconidia not observed. Macroconidia formed in pale yellow slimy masses, typically gently curved throughout, with a pronounced pedicellate foot cell and a ± inaequilaterally fusiform hooked apical cell, (2–)5–7(–8) septate: when 5-septate (55–)73–81–92(–107) × (6–)6.5–7–7.5(–8.5) μm; when 6-septate (88–)98.5–103–107(–124) × (7–)7.5–7.5–8(–8.5) μm; when 7-septate 88–125 × 6.5–9 μm. Chlamydospores not observed. Teleomorph: ascomata perithecia, crowded in groups of 5 to > 50, smooth, 150-210 µm diam. and 160-260 µm tall, ± globose to pyriform with a short neck, bright red with the ostiolar region similarly coloured, becoming violet in KOH and yellowish orange in lactic acid. Peridium 3–5 cells thick, somewhat thicker in the neck region, the outer layer of thick-walled angular to lobed cells 11-18 µm diam., and an inner layer of flatted angular cells. Interascal tissue of chains of broad very thin-walled globose cells, evanescent at maturity; the ostiole periphysate. Asci 74–80 × 9.5–11 μm, cylindrical to clavate, thin-walled, with a broadly rounded to truncate apex, with a minute refractive ring, 8-spored. Ascospores overlapping uniseriate or biseriate above and uniseriate below, (10.5–) 13–15 (–17.5) × 4.5–5 μm within the ascus, (11.5–) 13–15 (–16.5) × 4.5–6 μm after ejection, broadly ellipsoidal to ellipsoidal, slightly constricted at the ± median septum, verruculose, hyaline or pale brown, becoming thicker-walled and somewhat larger in size after ejection from the ascus.