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Family: NectriaceaeGenus: Volutella
Anamorph: conidiomata absent. Conidiophores aggregated into sporodochia 100-250 µm diam., with an inconspicuous basal stroma surrounded by unbranched, hyaline to pale yellow setae. Setae 250-450 µm long and 6-8 µm broad near the base, gradually tapering throughout their length and with an acuminate tip, sometimes verruculose towards the apex. Conidiophores branching once or twice, irregularly biverticillate. Conidiogenous cells subulate, proliferating percurrently and usually with conspicuous periclinal thickening. Conidial masses slimy and white to pale yellow. Conidia 5.5-6.5 (-7.5) x 2-3 µm, ellipsoidal to fusiform-ellipsoidal, aseptate, hyaline, thin-walled, often biguttulate, without an epispore, gelatinous sheath or appendages.
Teleomorph: stromata absent. Ascomata perithecia, ca 300 µm diam. and 400 µm tall, solitary, pyriform, the body pink and the ostiolar region red, becoming uniformly dark red in KOH. Peridium 15-25 µm thick, smooth, with an outer layer of thin-walled angular cells to ca 20 µm diam. and an inner layer of paler flattened cells. Ostiolar region acute, composed of narrow hypha! elements with walls ca 2 µm diam. arising from the interior region of the perithecial wall, the ostiolar canal periphysate. Interascal tissue not seen. Asci 90-120 x 12-14 µm, cylindrical to cylindric-clavate, the stalk tapering, thin-wall, the apex rounded to truncate with an inconspicuous apical ring, not staining in iodine, 8-spored. Ascospores arranged obliquely uniseriately or biseriately, 12.5-15 (-17) x 5.5-6.5 µm, fusiform-ellipsoidal, not constricted at the ± median septum, hyaline, thin-walled, smooth, without an epispore, gelatinous sheath or appendages.