Hypoxylon retpela Van der Gucht & Van der Veken

TELEOMORPH | CULTURES AND ANAMORPH | SPECIMENS EXAMINED | NOTES

TELEOMORPH

Hypoxylon retpela Van der Gucht & Van der Veken, Mycotaxon 44: 283. 1992.

Stromata effused-pulvinate, with inconspicuous to conspicuous perithecial mounds, 0.5-0.8 mm thick; surface pale vinaceous (85) to livid vinaceous (83), or livid vinaceous (83) to brown vinaceous (84); orange granules immediately beneath surface and between perithecia, with KOH-extractable pigments orange (7) or scarlet (5); the tissue below the perithecial layer black, inconspicuous to 0.3 mm thick.

Perithecia spherical to obovoid, 0.2-0.3 mm diam x 0.2-0.5 mm high.

Ostioles lower than the stromatal surface.

Asci 104-131 mm total length x 6.3-7.6 mm broad, the spore-bearing parts 70-86 mm long, the stipes 36-50 mm long, with apical ring bluing in Melzer's iodine reagent, discoid, 0.5-1 mm high x 2-2.5 mm broad.

Ascospores brown to dark brown, unicellular, ellipsoid-inequilateral, with narrowly rounded ends, (9-) 9.5-12 x 4.5-5 mm, with straight to slightly sigmoid germ slit spore-length; perispore dehiscent in 10% KOH, with very conspicuous coil-like ornamentation; epispore smooth.