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Nectria cinnabarina
Nomenclature
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Family: NectriaceaeGenus: Nectria
SUMMARY
Anamorph: stromata erumpent through the epidermis, pale yellow to orange, rarely reddish brown. Sporodochial conidiomata superficial on well-developed stromata, 300–2500 μm diam., 700–1600 μm high including stipe, smooth, cerebriform or tuberculate, scattered, solitary or in groups of 2-4, pustular, discoid or cylindrical-capitate, whitish yellow to orange, sometimes darker red. Conidiogenous layer arising directly from stromatic tissue, to 150 μm tall. Conidiophores 1.5–2.5 μm diam., biverticillate, multiseptate with conidiogenous cells forming terminally and laterally below septa. Conidiogenous cells 3–9 μm long, 1.5–2 μm diam., proliferating percurrently, without collarettes. Conidia (4–) 5–7.5 (–8.5) × (1.3–) 2–3 (–3.5) μm, narrowly ellipsoidal to cylindrical, straight or slightly curved, aseptate, hyaline, smooth-walled.
Teleomorph: stromata to 2 mm high and 5 mm diam., erumpent through the epidermis, whitish yellow to bay, KOH+ dark red. Ascomata perithecia, superficial on well-developed stromata, 250–370 μm diam. and 275–400 μm high, solitary or in clusters of up to 25, sometimes clustered around the base sporodochia, subglobose to globose, red to reddish brown, sometimes cupulate upon drying, non-papillate, apical region darker, KOH+ dark red, the surface usually roughened with concolourous warts. Peridium 40–60 μm thick, the outer layer of globose to angular cells with pigmented walls, the inner layer of flattened elongated thin-walled hyaline cells. Asci (80–) 85–95 (–105) × (7.5–) 8.0–9.5 (–11.0) μm, cylindrical to narrowly clavate, thin-walled, with an inconspicuous ring at the apex, 8-spored. Ascospores biseriate above, uniseriate below, (11.5–) 14–17.5 (–21.5) × (3–) 4–5.5 (–7) μm, ellipsoidal to fusiform, sometimes slightly curved, hyaline, (0–) 1 (–2) -septate, smooth-walled, without a perispore, gelatinous sheath or appendages.