Hypoxylon nitens (Ces.) Y.-M. Ju & J. D. Rogers

TELEOMORPH | CULTURES AND ANAMORPH | SPECIMENS EXAMINED | NOTES

TELEOMORPH

Hypoxylon nitens (Ces.) Y.-M. Ju & J. D. Rogers, A Revision of the Genus Hypoxylon, p. 220. 1996.

º Rosellinia nitens Ces., Atti Accad. Sci. Fis. 5: 13. 1872.

= Hypoxylon chalybeum Berk. & Broome, J. Linn. Soc., Bot. 14: 121. 1873.

= Hypoxylon chalybeum Berk. & Broome var. minor Ces., Atti Accad. Sci. Fis. 8: 17. 1879.

Stromata glomerate, hemispherical to effused-pulvinate, with perithecial mounds 1/4-1/2 exposed and not covered by outermost stromatal layer, 0.25-10 cm long x 0.25-5 cm broad x 0.7-2 mm thick; surface dark brown vinaceous (84) when young, becoming blackish, with reddish brown tone, finally shiny black; blackish granules immediately beneath surface, with KOH-extractable pigments greenish olivaceous (90); the tissue below the perithecial layer woody, blackish.

Perithecia spherical, (0.4-) 0.5-1 (-1.2) mm diam.

Ostioles conical-papillate, encircled with a flattened bovei-type disc 0.2-0.5 mm diam.

Asci 110-140 mm total length x 4-5 mm broad, the spore-bearing parts 47-74 mm long, the stipes 45-74 mm long, with apical ring bluing or not bluing in Melzer's iodine reagent, discoid, 0.5 mm high x 1-1.5 mm broad.

Ascospores light brown to brown, unicellular, ellipsoid-inequilateral, with narrowly rounded ends, 6.5-10 (-11) x 3-4.5 mm, with straight germ slit spore-length; perispore dehiscent in 10% KOH, smooth; epispore smooth.