Hypoxylon atroroseum J. D. Rogers

TELEOMORPH | CULTURES AND ANAMORPH | SPECIMENS EXAMINED | NOTES

TELEOMORPH

Hypoxylon atroroseum J. D. Rogers, Canad. J. Bot. 59: 1363. 1981.

Stromata effused-pulvinate, with inconspicuous perithecial mounds, 3-6 cm long x 1.5-3 cm broad x 0.6-0.8 mm thick; surface vinaceous gray (116); dull reddish brown granules immediately beneath surface and between perithecia, with KOH-extractable pigments greenish olivaceous (90) or dull green (70); the tissue below the perithecial layer inconspicuous.

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

Ostioles papillate, encircled with a convex truncatum-type disc 0.15-0.2 mm diam.

Asci 60-75 mm total length x 3-4 mm broad, the spore-bearing parts 50-60 mm long, the stipes 10-20 mm long, with apical ring bluing in Melzer's iodine reagent, discoid, 0.5 mm high x 1 mm broad.

Ascospores light brown, unicellular, ellipsoid-inequilateral, with narrowly rounded ends, 5-7 x 2-3 mm, with straight germ slit spore-length on flattened side; perispore dehiscent in 10% KOH, smooth; epispore smooth.