Fungalpedia – Note 2771, Endoxyla

 

Endoxyla. Fuckel.

Citation when using this data: Huang SK et al. 2021 – Fungalpedia.

Index Fungorum, Facesoffungi, MycoBank, GenBank, Fig 1

Classification: Boliniaceae, Boliniales, Sordariomycetidae, Sordariomycetes, Pezizomycotina, Ascomycota, Fungi

Saprobic on wood. Sexual morph: Ascostromata poorly developed or absent. Ascomata perithecial, gregarious or in bi-seriate linear groups, immersed to semi-immersed, globose to subglobose, black, ostiolate. Asci 8-spored, clavate, pedicellate. Ascospores ellipsoidal to cylindrical, hyaline to brown, slightly curvate, with a germ pore at one end. Asexual morph: Undetermined (adapted from Fuckel 1872).

Notes: Fuckel (1872) established Endoxyla based on globose ascomata with clavate asci and ellipsoidal ascospores, and while introducing E. macrostoma, mentioned that Sphaeria parallela Fr. and S. operculata Alb. & Schw. belong to Endoxyla. Saccardo (1882) accepted S. parallela as Endoxyla parallela and S. operculata as E. operculata. Subsequently, there was a controversy as to which species should be selected as the type of Endoxyla. Some mycologists have recognized S. operculata (≡ E. operculata) published earlier, as the type species (Clements and Shear 1931; Holm 1975). Others believed that Fuckel (1872) only described E. macrostoma in detail when establishing Endoxyla, so that, it should be regarded as the generic type (Untereiner 1993). Endoxyla macrostoma is widely accepted as the type species of Endoxyla (Untereiner 1993; Untereiner et al. 2013; Hyde et al. 2020). Untereiner et al. (2013) sequenced strains of E. macrostoma, E. mallochii and
E. operculata which clustered with Endoxyla (98%ML) in Boliniaceae. The Endoxyla species forms a sister clade to Camaropella (53%ML

Type species: Endoxyla macrostoma Fuckel, Jb. nassau. Ver. Naturk. 25-26: 322 (1871).

Other accepted species: Species Fungorum – search Endoxyla.

 

image

 

Figure 1 – Endoxyla operculata: a, b, e–f, j, l, s (S-F 138817); c, d, g–i, k, m–r (S-F 138814). a Herbarium material. b, c Ascomata on host. d, e Ascomata in cross section. f, g Peridium. h Neck in cross section with periphyses. i Base of ascoma with mycelium. j–m Asci. n–s Ascospores. Scale bars: b–c = 1 mm, d. i = 200 µm, e = 500 µm, f. g = 100 µm, h. j–m = 50 µm, n–s = 10 µm.

 

References

Clements FE, Shear CL 1931 – The genera of fungi. H.W. Wilson Co., New York.

Fuckel L 1872 – Symbolae mycologicae. Beiträge zur Kenntniss der rheinischen Pilze. Erster Nachtrag. Jahrbücher Des Nassauischen Vereins Für Naturkunde 25–26:287–346.

Fuckel L 1872 – Symbolae mycologicae. Beiträge zur Kenntniss der rheinischen Pilze. Erster Nachtrag. Jahrbücher Des Nassauischen Vereins Für Naturkunde 25–26:287–346.

Hyde KD, Norphanphoun C, Maharachchikumbura SSN et al 2020 – Refined families of Sordariomycetes. Mycosphere 11(1):305–1059.

Saccardo PA 1882 – Sylloge Pyrenomycetum, Vol. I. Sylloge Fungorum 1:1–768.

Untereiner WA 1993 – A taxonomic revision of the genus Endoxyla. Mycologia 85(2):294–310.

Untereiner WA, Bogale M, Carter A et al 2013 – Molecular phylogeny of Boliniales (Sordariomycetes) with an assessment of the systematics of Apiorhynchostoma, Endoxyla and Pseudovalsaria. Mycologia 105(3):564–588.

 

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 18 June 2026

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