Fungalpedia – Note 864, Valetoniella
Valetoniella. Höhn.
Citation when using this data: Huang SK et al. 2021 (in prep.) – Fungalpedia, Ascomycota.
Index Fungorum, Facesoffungi, MycoBank, GenBank., Fig 1
Classification: Niessliaceae, Hypocreales, Hypocreomycetidae, Sordariomycetes, Pezizomycotina, Ascomycota, Fungi
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 (adapted from von Höhnel 1909b, Samuels & Barr 1997).
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 the Valetoniella.
Type species: Valetoniella crucipila Höhn., Sber. Akad. Wiss. Wien, Math.-naturw. Kl., Abt. 1 118: 1500 (1909)
Other accepted species: Species Fungorum – search Valetoniella.
Figure 1 – Valetoniella crucipila: a–b, d, fj (PDD-41743); c, e, k (PDD-50069). a Material. b–c Ascomata on the host. d Ascoma cross section. e Squashed ascoma. f Peridium. g Setae. h–i Asci. j–k Ascospores. Notes: d. f. j from Permanent slide; h–i, k stained in Melzer’s reagent. Scale bars: b = 500 µm, c = 200 µm, d = 100 µm, e, k = 50 µm, f–i = 20 µm, j = 10 µm.
References
von Höhnel F. 1909b – Fragmente zur Mykologie: IX. Mitteilung (Nr. 407 bis 467). Sitzungsberichte der Kaiserlichen Akademie der Wissenschaften Math-naturw Klasse Abt I 118, 1461–1552.
Entry by
Shi-Ke Huang, State Key Laboratory Breeding Base of Green Pesticide and Agricultural Bioengineering, Key Laboratory of Green Pesticide and Agricultural Bioengineering, Ministry of Education, Guizhou University, Guiyang 550025, China, The Engineering Research Center of Southwest Bio-Pharmaceutical Resources, Ministry of Education, Guizhou University, Guiyang 550025, Guizhou Province, China, Center of Excellence in Fungal Research, Mae Fah Luang University, Chiang Rai 57100, Thailand, School of Science, Mae Fah Luang University, Chiang Rai 57100, Thailand, The Mushroom Research Centre, Guizhou University, Guiyang 550025, China
Published online 14 September 2021