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

TELEOMORPH | CULTURES AND ANAMORPH | SPECIMENS EXAMINED | NOTES

TELEOMORPH

Hypoxylon karii Y.-M. Ju & J. D. Rogers, A Revision of the Genus Hypoxylon, p. 138. 1996.

Stromata effused-pulvinate, with conspicuous perithecial mounds, ca. 1.1 cm diam x 2 mm thick; surface brown vinaceous (84); dull reddish brown granules immediately beneath surface and between perithecia, without apparent KOH-extractable pigments; the tissue below the perithecial layer black, 1.5 mm thick.

Perithecia spherical to obovoid, 0.2-0.3 mm diam x 0.2-0.4 mm high.

Ostioles lower than the stromatal surface, encircled with blackish halo.

Asci 162-208 mm total length x 10-12 mm broad, the spore-bearing parts 113-122 mm long, the stipes 50-86 mm long, with apical ring bluing in Melzer's iodine reagent, discoid, 1.5 mm high x 4 mm broad.

Ascospores brown to dark brown, unicellular, ellipsoid-inequilateral, with acute to narrowly rounded ends, 18-25 (-28) x 7-8.5 (-9.5) mm, with straight germ slit much less than spore-length; perispore indehiscent in 10% KOH; epispore smooth or faintly striate.