Hypoxylon pelliculosum Petch

TELEOMORPH | CULTURES AND ANAMORPH | SPECIMENS EXAMINED | NOTES

TELEOMORPH

Hypoxylon pelliculosum Petch, Ann. Roy. Bot. Gard. (Peradeniya) 8: 155. 1924.

Stromata glomerate to pulvinate, with inconspicuous to conspicuous perithecial mounds, 1-8 mm diam x 0.7-1.5 mm thick; surface dark brick (60); dull orange or rusty granules immediately beneath surface and between perithecia, with KOH-extractable pigments luteous (12) or orange (7); the tissue below the perithecial layer blackish, up to 1 mm thick.

Perithecia spherical, 0.2-0.4 mm diam.

Ostioles lower than the stromatal surface.

Asci fragmentary, with apical ring not bluing in Melzer's iodine reagent, discoid, 0.5 mm high x 2-2.5 mm broad.

Ascospores brown to dark brown, unicellular, ellipsoid-inequilateral, with narrowly rounded ends, 9-11 x 4.5-5.5 mm, with straight germ slit spore-length; perispore dehiscent in 10% KOH, with very conspicuous coil-like ornamentation; epispore smooth.