Hypoxylon diatrypeoides Rehm

TELEOMORPH | CULTURES AND ANAMORPH | SPECIMENS EXAMINED | NOTES

TELEOMORPH

Hypoxylon diatrypeoides Rehm, Ann. Mycol. 5: 525. 1907; as "diatrypoides".

º Numulariola diatrypeoides (Rehm) P. Martin, J. S. African Bot. 35: 293. 1969; [nom. inval., ICBN Art. 33.2]; J. S. African Bot. 42: 76. 1976.

= Hypoxylon paulistanum Speg., Rev. Mus. La Plata 15: 19. 1908.

Stromata restrictedly pulvinate, sometimes encircled with ruptured epidermal tissue, with inconspicuous to conspicuous perithecial mounds, 0.7-3 mm diam x 0.5-1 mm thick, containing fewer than 25 perithecia; surface fawn (87) or umber (9); dull orange to orange brown granules immediately beneath surface and between perithecia, with KOH-extractable pigments luteous (12) or orange (7); the tissue below the perithecial layer dark brown, inconspicuous to 0.5 mm thick.

Perithecia spherical, 0.3-0.4 mm diam.

Ostioles lower than the stromatal surface.

Asci 140-170 mm total length x 12.5-16 mm broad, the spore-bearing parts 108-117 mm long, the stipes 20-65 mm long, with apical ring not bluing or bluing in Melzer's iodine reagent.

Ascospores dark brown to blackish brown, unicellular, ellipsoid-inequilateral, infrequently pyriform, with narrowly to less frequently broadly rounded ends, 17-23 x 8.5-10 mm, with straight germ slit spore-length; perispore dehiscent in 10% KOH, with inconspicuous coil-like ornamentation; epispore smooth.