Hypoxylon duranii J. D. Rogers



Hypoxylon duranii J. D. Rogers, Mycotaxon 23: 429. 1985.

Stromata glomerate, restricted-pulvinate to effused-pulvinate, with inconspicuous to conspicuous perithecial mounds, 0.1-6 cm long x 0.1-1.5 cm broad x 0.4-1 mm thick; surface brown vinaceous (84) or chestnut (40); dull reddish brown to blackish granules immediately beneath surface and between perithecia, with KOH-extractable pigments isabelline (65) or amber (47); the tissue below the perithecial layer black, inconspicuous.

Perithecia spherical to obovoid, 0.1-0.3 mm diam x 0.2-0.5 mm high.

Ostioles lower than the stromatal surface.

Asci 85-127 mm total length x 6.5-9 mm broad, the spore-bearing parts 55-80 mm long, the stipes 23-55 mm long, with apical ring bluing in Melzer's iodine reagent, discoid, 0.4-0.8 mm high x 2.5-3 mm broad.

Ascospores brown to dark brown, unicellular, ellipsoid-inequilateral, with narrowly rounded ends, 9.5-13 (-14.5) x 4.5-6.5 mm, with straight to slightly sigmoid germ slit spore-length; perispore dehiscent in 10% KOH, with very conspicuous coil-like ornamentation; epispore smooth.