Hypocreales » Niessliaceae


Valetoniella Höhn., Sber. Akad. Wiss. Wien, Math.-naturw. Kl., Abt. 1 118: 1499 (1909)

Hypocreomycetidae, Hypocreales, Niessliaceae, Valetoniella

Index Fungorum number: IF 5700; 3 morphological species (Species Fungorum 2020).


Saprobic on wood. Sexual morph: Ascomata perithecial, solitary or scattered, superficial on decorticated wood, sometimes sitting on a subiculum, globose to subglobose, translucent and pale brown when fresh, brown or black when dry, membranaceous, tuberculate, ostiolate, periphysate, collapsing when dry. Setae cylindrical, brown, with several conical, brown to pale brown ornamentals at apex. Peridium composed of membranaceous, yellow or pale brown to hyaline cells of textura angularis to textura prismatica. Paraphyses absent. Asci 8-spored, unitunicate, clavate, pedicellate, apex rounded, apical ring absent, evanescent. Ascospores bi-seriate or overlapping, hyaline, usually becoming red in Melzer’s reagent, ellipsoidal or fusiform, 1-septate, smooth-walled, faintly striate, guttulate. Asexual morph: Undetermined (copied from Huang et al. 2021).



Type species: Valetoniella crucipila Höhn., Sber. Akad. Wiss. Wien, Math.-naturw. Kl., Abt. 1 118: 1500 (1909)




Notes: Valetoniella was established by von Höhnel (1909b) for V. crucipila, which was found on decorticated wood and accompanied Nectria species. Afterwards, Samuels & Barr (1997) introduced V. claviornata and V. pauciornata based on their ascomata that have obvious setae with several conical ornamentals at apex, but no molecular data is available for Valetoniella (copied from Huang et al. 2021).



Species illustrated in this entry:

Valetoniella crucipila Höhn.


About Sordariomycetes

The webpage Sordariomycetes provides an up-to-date classification and account of all genera of the class Sordariomycetes.


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