Fungalpedia – Note 2942, Corinectria
Corinectria C. González & P. Chaverri, Mycol. Progr. 16(11-12): 1021 (2017).
Citation when using this data: Perera RH et al. 2023 – Fungalpedia.
Index Fungorum, Facesoffungi, MycoBank, GenBank, Fig 1, 2.
Classification: Nectriaceae, Hypocreales, Hypocreomycetidae, Sordariomycetes, Pezizomycotina, Ascomycota, Fungi.
Saprobic, hemibiotrophic, plant pathogenic, on bark of conifers. Sexual morph: Ascomata 200–400 μm diam., perithecial, gregarious in numbers of 200–300, stromatic, globose to subglobose, darker around ostiolar area, not collapsing upon drying, initially orange and red, become dark-red when mature, KOH+ black, yellow in lactic acid. Stromats erumpent through bark. Peridium up to 60 μm wide; outer stratum comprising of a palisade of oblong cylindrical cells, cells perpendicular to locule in face veiw. Apical paraphyses septate, hyaline. Asci 8-spored, cylindrical. Ascospores 1-septate, ellipsoidal, constricted or not at septum, guttulate, hyaline, smooth-walled. Asexual morph: Conidiophores from cultures simple or sparsely branched, producing microconidia or sporodochia (in the natural substrate), producing cylindrocarpon-like macroconidia. Microconidia aseptate, hyaline, formed in wet droplets. Macroconidia in white or pale-yellow masses, cylindrical, (3–)5–7-septate, typically 7-septate when mature, straight or somewhat curved, ends pointed or rounded, hyaline. Chlamydospores absent (adapted from González and Chaverri 2017).
Known distribution: Northern and Southern Hemispheres (González and Chaverri 2017), Southeast Asia (Thailand) (this study).
Notes: González and Chaverri (2017) found thet the Neonectria constricta, N. fuckeliana and N. tsugae clade was distant from the Neonectria sensu stricto clade. Therefore, González and Chaverri (2017) established Corinectria to accommodate those taxa based on multigene phylogeny, morphological differences and biology. Besides, Corinectria resembles Nectria mammoidea-group, which was described by Booth (1959) on the basis of perithecial wall anatomy (Chaverri et al. 2011). Corinectria species are restricted to coniferous hosts so far, and some pathogenic species are causing cankers (González and Chaverri 2017).
Type species: Corinectria fuckeliana (C. Booth) C. González & P. Chaverri, Mycol. Progr. 16(11-12): 1023 (2017).
Other accepted species: Species Fungorum – search Corinectria.
Figure 1 – Corinectria fuckeliana (MFLU 17-1620) a Herbarium material b–d Appearance of ascomata on host substrate e, f Transverse sections of ascomata g, h Transverse sections of the peridium i Transverse section of the ostiole j Peridium in 3% KOH k–m Asci n Ascospores o Germinating ascospore. Scale bars: b–d = 500 µm, e, f = 200 µm, g–m = 50 µm, n = 10 µm, o = 20 µm.
Figure 2 – Corinectria fuckeliana (Redrawn from Booth 1959) a Microcnidiophores and microconidia b Macrconidiophores and macroconidia. Scale bars: a, b = 20 µm.
References
Booth C 1959 – Studies of Pyrenomycetes. IV. Nectria. Mycological Papers 73:1–115.
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 28 August 2026