Fungalpedia – Note 2937, Albonectria
Albonectria Rossman & Samuels, in Rossman et al., Stud. Mycol. 42: 105 (1999).
Citation when using this data: Perera RH et al. 2023 – Fungalpedia.
Index Fungorum, Facesoffungi, MycoBank, GenBank.
Classification Nectriaceae, Hypocreales, Hypocreomycetidae, Sordariomycetes, Pezizomycotina, Ascomycota, Fungi.
Saprobic or pathogenic, on dicotyledonous and monocotyledonous plant parts. Sexual morph: Ascomata perithecial, solitary to gregarious, superficial on a stroma, globose to subglobose to ellipsoidal or ovoid to obovoid, not collapsing upon drying, white to pale yellow to pale ochraceous, KOH-, surface strongly ornamented with warts, with a small pointed papilla or apapillate. Stromata sparse to well-developed. Apical paraphyses moniliform, hyaline. Asci 4–8-spored, narrowly clavate or broadly clavate to ellipsoidal, without an apical ring. Ascospores obliquely uniseriate or biseriate, ellipsoidal to long-ellipsoidal, 3- to multi-septate, not or slightly constricted at the septum, hyaline to yellow-brown, smooth-walled to striate. Asexual morph: Conidiomata fusarium-like, hyphomycetous. Conidiophores mononematous or sporodochial. Aerial conidiophores irregularly branched or unbranched, producing terminal or lateral phialides. Aerial phialides monophialidic, cylindrical to subcylindrical, periclinal thickening not visible or absent, smooth-, thin-walled, giving rise to two types of conidia. Aerial microconidia ovoid to obovoid, oblong or ellipsoid, 0–1- septate, hyaline, smooth-walled, flattened basal papilla present or lacking, formed in dry chains or wet heads. Aerial macroconidia falcate, multi-septate, with a curved, blunt to pointed apical cell and a foot-shaped basal cell, or distinctly beaked at both ends. Sporodochia cream colour to yellow. Conidiophores densely packed, branched, verticillate, having a short, smooth- and thin-walled stipe. Sporodochial conidiogenous cells monophialidic, arrange in terminal whorls of 2–4, cylindrical to subulate, smooth- and thin-walled, collarette reduced or flared. Sporodochial macroconidia falcate, 5–9-septate, moderately curved to straight, thick-walled, consisting of a blunt to hooked apical cell and distinct well-developed foot-shaped basal cell. Chlamydospores absent (adapted from Rossman et al. 1999; Crous et al. 2021).
Known distribution: Taiwan (Guu et al. 2007), Sri Lanka, Jamaica, New Zealand, Puerto Rico, Ecuador, Venezuela, Brazil, Colombia (Rossman et al. 1999), Thailand (This study).
Notes: Rossman et al. (1999) established Albonectria for species having white to pale yellow, strongly warted ascomata and producing Fusarium asexual morphs.
Type species: Albonectria rigidiuscula (Berk. & Broome) Rossman & Samuels, in Rossman et al., Stud. Mycol. 42: 105 (1999).
Other accepted species: Species Fungorum – search Albonectria.
References
Rossman AY, Samuels GJ, Rogerson CT et al. 1999 — Genera of Bionectriaceae, Hypocreaceae and Nectriaceae (Hypocreales, Ascomycetes). Stud Mycol 42:1–248.
Entry by
Perera RH, Guizhou Key Laboratory of Agricultural Biotechnology, Guizhou Academy of Agricultural Sciences, Guiyang, Guizhou 550006, P. R. 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, Mushroom Research Foundation, 128 M.3 Ban Pa Deng T. Pa Pae, A. Mae Taeng, Chiang Mai 50150, Thailand.
Published online 14 August 2026.