Fungalpedia – Note 1032, Lyrommataceae

 

Lyrommataceae Lücking

Citation when using this data: Tian Q et al. 2021 (in prep.) – Fungalpedia, Ascomycota.

Index Fungorum, Facesoffungi, MycoBank, GenBank.

Classification: Chaetothyriales, Chaetothyriomycetidae, Eurotiomycetes, Pezizomycotina, Ascomycota, Fungi

Thallus foliicolous, crustose. Photobiont trentepohlioid. Sexual morph: Ascomata perithecioid, globose to shortly barrel-shaped, sessile, setose. Excipulum thin-walled, composed of several layers of dark brown, irregular hyphae. Involucrellum absent. Hamathecium comprising unbranched paraphyses in young ascomata, but in mature ascomata often aparaphysate, I-, KI-. Asci 8-spored, fissitunicate, obclavate to saccate, I-, Kl-. Ascospores hyaline, septate. Asexual morph: Conidiomata pycnidia, sessile, elongate, barrel-shaped to ellipsoid, setose or glabrous. Wall of conidiomata comprising a thin layer of distinctly parallel hyphae, dark brown. Conidiophores filamentous, unbranched, septate. Conidiogeneous cells acropleurogenous, holoblastic, with the lateral formation of conidia. Conidia filiform, hyaline, aseptate (Lücking 2008). 

Notes: Lyrommataceae Lücking, contains a single genus Lyromma Bat. & H. Maia and has ascomata with antler-shaped appendages and sessile, setose pycnidia with filiform conidia (Lücking 2008, Flakus & Farkas 2013). Lücking (2008) classified the lichenized Lyrommataceae in Chaetothyriales based on the close relationship among Chaetothyriales, Verrucariales Mattick ex D. Hawksw. & O.E. Erikss. and Pyrenulales Fink ex D. Hawksw. & O.E. Erikss. which appear on a clade with the bulk of the lichenized Discomycetes (Ostropales, Lecanorales) as a sister group and distant from the Dothideales (Lutzoni et al. 2001, 2004, Eriksson et al. 2004, Del Prado et al. 2006). However, no sequence data of any species of Lyrommataceae are available, thus we tentatively accept these opinions and retain Lyrommataceae in Chaetothyriales pending further studies. 

Type genus: Lyromma Bat. & H. Maia, Atas Inst. Micol. Univ. Pernambuco 2: 359 (1965).

 

References

Del Prado R, Schmitt I, Kautz S, Palice Z et al. 2006 – Molecular data place Trypetheliaceae in Dothideomycetes. Mycological Research 110, 511–520.

Eriksson OE, Baral HO, Currah RS, Hansen K, et al. 2004 – Outline of Ascomycota-2004. Myconet 10(1), 89.

Flakus A, Farkas E. 2013 – A contribution to the taxonomy of Lyromma (Lyrommataceae, lichenized Ascomycota) with a species key. Mycotaxon 124, 127–141.

Lücking R. 2008 – Foliicolous Lichenized Fungi. Flora Neotropica Monograph 103, 1– 866.

Lutzoni F, Kauff F, Cox CJ, McLaughlin D et al. 2004 – Assembling the fungal tree of life: progress, classification, and evolution of subcellular traits. American Journal of Botany 91, 1446–1480. 

Lutzoni F, Pagel M, Reeb V. 2001 – Major fungal lineages are derived from lichen symbiotic ancestors. Nature 41, 937–940.

 

Entry by

Qing Tian, 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

 

Published online 16 December 2021

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