Fungalpedia – Note 3132, Rectifusarium
Rectifusarium L. Lombard, Crous & W. Gams, in Lombard, van der Merwe, Groenewald & Crous, Stud. Mycol. 80: 229 (2015).
Citation when using this data: Perera RH et al. 2023 – Fungalpedia.
Index Fungorum, Facesoffungi, MycoBank, GenBank, Fig 1.
Classification: Nectriaceae, Hypocreales, Hypocreomycetidae, Sordariomycetes, Pezizomycotina, Ascomycota, Fungi.
Saprobic, plant pathogenic, on plant material including twigs and tubers, sometimes isolated from soil. Sexual morph: Ascomata perithecial, aggregated in groups, globose to subglobose, dark red, with a papillate ostiolar region, ringed by a short collar of hyphal tips, surface smooth. Paraphyses lacking. Asci 8- spored, clavate, apex rounded, with a containing J- apical ring. Ascospores ellipsoidal, 1-septate, constricted at the septum, light brown, verrucose. Asexual morph: Hyphomycetous, not sporodochial. Conidiophores simple, mononematous, straight to flexuous, septate, unbranched or rarely branched, hyaline, terminating in a single phialide. Conidiogenous cells phialidic, cylindrical, tapering towards the apex, periclinal thickening visible, with flared collarettes. Microconidia rare, ellipsoidal to fusiform, 0–1-septate, hyaline. Macroconidia 3- septate, hyaline, ellipsoidal to fusiform, with both ends slightly curved, sometimes with a basal foot cell, apex acutely rounded. Chlamydospores occur laterally or terminally, globose to subglobose, hyaline (adapted from Lombard et al. 2015).
Known distribution: Germany (Lombard et al. 2015).
Notes: Lombard et al. (2015) established Rectifusarium to accommodate the fusarium-like species previously treated as F. ventricosum. Rectifusarium is characterized by not possessing sporodochia.
Type species: Rectifusarium ventricosum (Appel & Wollenw.) L. Lombard & Crous, in Lombard, van der Merwe, Groenewald & Crous, Stud. Mycol. 80: 229 (2015).
Other accepted species: Species Fungorum – search Rectifusarium.
Figure 1 – Rectifusarium ventricosum (IMI 112498,) a Herbarium packet b Dried culture herbarium c Close-up of colony d, e Hyphae, conidiophores and conidiogenous cells f, g Macroconidia h Macroconidia and chlamydospores developing from macroconidia i Chlamydospore. Scale bars: c =2 mm, d = 100 µm, e–i = 20 µm.
References
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 10 September 2026