Hypoxylon rubigineoareolatum Rehm

TELEOMORPH | CULTURES AND ANAMORPH | SPECIMENS EXAMINED | NOTES

TELEOMORPH

Hypoxylon rubigineoareolatum Rehm apud Theiss., Ann. Mycol. 6: 345. 1908.

Stromata effused-pulvinate, with inconspicuous to conspicuous perithecial mounds, 0.3-2 cm long x 3-8 mm broad x 0.6-1 mm thick; surface blackish, shiny; blackish, woody to carbonaceous tissue immediately beneath surface and between perithecia, without apparent KOH-extractable pigments; the tissue below the perithecial layer inconspicuous to 0.3 mm thick.

Perithecia obovoid, 0.3-0.5 mm diam x 0.4-0.7 mm high.

Ostioles higher than the stromatal surface, minutely papillate.

Asci 120-140 mm total length x 6.5-8 mm broad, the spore-bearing parts 75-85 mm long, the stipes 40-55 mm long, with apical ring bluing in Melzer's iodine reagent, discoid, 1-1.5 mm high x 2.5 mm broad.

Ascospores brown to dark brown, unicellular, ellipsoid-inequilateral, with narrowly rounded ends, 11-16 x 5.5-6.5 mm, with straight germ slit spore-length; perispore dehiscent in 10% KOH, smooth or with faint coil-like ornamentation; epispore smooth.