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

TELEOMORPH | CULTURES AND ANAMORPH | SPECIMENS EXAMINED | NOTES

TELEOMORPH

Hypoxylon pyriforme Y.-M. Ju & J. D. Rogers, A Revision of the Genus Hypoxylon, p. 224. 1996.

Stromata effused-pulvinate, with perithecial mounds 1/3 to 2/3 exposed, up to 7 cm diam x 1 mm thick; surface blackish, with reddish brown tone; blackish granules immediately beneath surface, with KOH-extractable pigments dull green (70) or dark green (21); the tissue below the perithecial layer inconspicuous.

Perithecia spherical, 0.7-0.8 mm diam.

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

Asci 140-160 mm total length x 5-5.5 mm broad, the spore-bearing parts 60-70 mm long, the stipes 75-90 mm long, with apical ring bluing in Melzer's iodine reagent, discoid, 0.5-1 mm high x 1.5-2 mm broad.

Ascospores dark brown, unicellular, pyriform, slightly inequilateral to inequilateral, with one end narrowly rounded and the other broadly rounded, 8-10 x 3.5-4 mm, with straight germ slit spore-length; perispore indehiscent in 10% KOH; epispore smooth.