Hypomyces pseudocorticiicola Fig 1-2.

Hypomyces pseudocorticiicola Tokiwa & Okuda, 2005.

Anamorph: Cladobotryum sp.

Teleomorph in nature: Subiculum light yellow, grayish yellow (Munsell 5Y9/6, 5Y8/2) to brown (Munsell 10YR4/4) covering a part or entire surface of host hymenium; hymenial hyphae pale yellow (Munsell 5Y9/2), 4.0-10.0 (-16.0) mm in width, parenchymatous, septate, thick-walled, and KOH (-).  Perithecia pale yellow (Munsell 5Y9/2) to light yellow (Munsell 5Y9/6), subglobose to broadly ellipsoidal, (130-) 175-190 (-230) x (170-) 175-190 (-220) mm, born in groups half-immersed in the mycelia; papilla conical, (65-) 80-90  (-105) x 75-90 (-115) mm, with a flat surfaced apex bearing an ostiole, (20-) 25-40 (-65) mm in width.  Asci cylindrical, (106-) 124-134 (-148) x (5.0-) 5.5-6.0 (-6.5) mm, 8-spored, with a stalk 16.0-20.0 mm long, forming a pore at the slightly thick-walled apex, 1.5-4.0 mm in width.  Ascospores hyaline to pale yellow (Munsell 5Y9/2), fusiform, always equally two-celled, (14.0-) 16.0-19.0 (-21.0) x (4.0-) 4.5-5.0 (-6.0) mm, verrucose with prominent warts of 0.1-0.5 mm in diam., apiculate at both ends; apiculi 1.5-3.0 mm long, rounded at the apex. 

Characteristics in culture: Colonies on MEA, OA or PDA grow rapidly to reach 90 mm in diam. after 7 days at 25oC, floccose, pale yellow, light yellow to grayish orange (Munsell 5Y9/2-6, 10YR8/4), margin uneven, odor slightly moldy, reverse brownish orange, yellowish brown to light brown (Munsell 10YR5-7/4-8), forming a loose network of mycelium; mycelium partially composes a dense mat, producing sclerotia, vivid yellow or yellow (Munsell 5Y8/12-14) to pale or light yellow (Munsell 5Y9/2-6), which turn out to be perithecia.  Hyphae are hyaline, septate, thick-walled, 7.5-12.5 (-20.0) mm.  Conidiophores born from aerial hyphae, semi-macronematous, septate, slightly thick-walled, 2 to 3 times branched irregularly, (6.5-) 7.5-10.0 mm wide, forming conidiogenous cells at the apex.  Conidiogenous cells born laterally or as a main branch of conidiophores, solitary or in a whorl, hyaline, (140-) 250-375 (-440) x (2.5-) 7.5-9.5 mm, slightly lanceolate, gradually tapered to the apex of 2.0-3.0 mm in width.  Conidia produced retrogressively in short imbricate chains from the apex of conidiogenous cells, hyaline, (0-) 2-3 (-4) septate, cylindrical to long ellipsoidal, thin-walled, smooth, (12.5-) 32.5-37.5 (-47.5) x (5.0-) 7.5-9.0 (-10.5) mm.  Chlamydospores produced in chains laterally on the substrate hyphae or apically at the apex of the branches, brownish orange (Munsell 10YR7/4), with minute warts, subglobose to broadly ellipsoidal, 7.5-15 mm in width.


Toshiyuki Tokiwa and Toru Okuda 2005.

Japanese species of Hypomyces and their anamorphs III Mycoscience 46: 294 ? 302.