Hypoxylon parksianum Y.-M. Ju & J. D. Rogers

TELEOMORPH | CULTURES AND ANAMORPH | SPECIMENS EXAMINED | NOTES

TELEOMORPH

Hypoxylon parksianum Y.-M. Ju & J. D. Rogers, A Revision of the Genus Hypoxylon, p. 162. 1996.

Stromata pulvinate to effused-pulvinate, with inconspicuous to conspicuous perithecial mounds, 0.3-3 cm diam x 0.7-1.2 mm thick; surface chestnut (40); blackish granules immediately beneath surface and between perithecia, with KOH-extractable pigments brick (59); the tissue below the perithecial layer inconspicuous.

Perithecia spherical to tubular, 0.3-0.6 mm diam x 0.4-0.8 mm high.

Ostioles barely to slightly higher than the stromatal surface.

Asci 147-174 mm total length x 6.5-7.5 mm broad, the spore-bearing parts 103-118 mm long, the stipes 41-61 mm long, with apical ring bluing in Melzer's iodine reagent, discoid, 1-2.2 mm high x 2.2-3 mm broad.

Ascospores light brown to brown, unicellular, ellipsoid, nearly equilateral, with broadly to narrowly rounded ends, 11-14.5 x (4.5-) 5-6.5 mm, with straight germ slit less than to slightly less than spore-length; perispore indehiscent in 10% KOH; epispore smooth.