Chaetorostrum Zelski et al
Index Fungorum number: IF 563571
Sexual morph: Ascomata on submerged wood, scattered, immersed to partially immersed, lying horizontally on the substrate, elongated globose, membranous, light-brown to brown, ostiolate, with a long, erumpent, setose neck. Necks central, long, cylindrical, periphysate, bearing long, stiff, dark hairs. Peridium composed of textura angularis in surface view. Paraphyses hyaline, long, numerous, septate, broad at the base, tapering at the apex. Asci basal, fasciculate, unitunicate, cylindrical, tapering at the base and having a spine-like extension, containing eight, overlapping uni-seriate ascospores, to uni-seriate when ascus elongates in water, with a large, bi-partite, cylindrical, apical apparatus. Ascospores broadly ellipsoidal, hyaline, one-septate when young, becoming versicolored and 3-septate with brown central cells and hyaline end cells at maturity, guttulate; young ascospores surrounded by a narrow gelatinous sheath. Asexual morph: Taeniolella-like. Conidiophores micronematous, mononematous. Conidia monoblastic on terminal ends of hyaline vegetative hyphae, elongate cylindrical phragmospores, euseptate, brown, paler near apex, dry, schizolytic.
Notes: The genus Chaetorostrum was erected by Zelski et al. (2011) to accommodate a holomorph species collected from freshwater stream in Peru. There is only one species in this genus and known only from the type locality.
Type species: Chaetorostrum quincemilense Zelski et al., Mycosphere 2(5): 595 (2011)