Pleosporales » Thyridariaceae

Thyridaria

Thyridaria Sacc., Grevillea 4(no. 29): 21 (1875).

Index Fungorum number: IF 5463; Facesoffungi number: FoF 08375, 30 morphological species (Species Fungorum 2022), 3 species with molecular data.

Saprobic on host. Sexual morph: Ascomata immersed-erumpent, separate or gregarious in valsoid groups in brown prosenchymatous tissue, sometimes with yellowish or reddish pigments around the ostiolar neck forming a disc, black, more or less globose, with well-developed ostiolar neck; ostiole periphysate. Peridium brown, pseudoparenchymatous. Hamathecium consisting of apically free paraphyses and trabeculate pseudoparaphyses. Asci cylindrical, bitunicate. Ascospores yellowish- to dark brown, ellipsoid or fusoid, symmetric, with transversal eu- and distosepta, verruculose. Asexual morphs: coelomycetous, forming simple or compound pycnidia (adapted from Jaklitsch & Voglmayr 2016).

Type species: Thyridaria broussonetiae (Sacc.) Traverso

Notes: Thyridaria is characterised by immersed-erumpent ascomata, brown, pseudoparenchymatous peridium, cylindrical asci and yellowish to dark brown, ellipsoid or fusoid ascospores. The taxonomic placement of Thyridaria has been controversial with the genus being assigned to Didymosphaeriaceae, Melanommataceae, Platystomaceae, Pleosporaceae and Sphaeriaceae (Wehmeyer 1941, 1975, Munk 1957, Luttrell 1973, Müller and Arx 1973, Dennis 1978, Barr 1979a, b, 2003). Barr (2003) expanded the generic concept of Thyridaria with species described as having an ample subiculum adjoining ascomata, which formed under the periderm with ascospores having both thickened and darkened septa and walls. In the phylogenetic analysis of Jaklitsch and Voglmayr (2016) based on ITS, LSU, SSU, RPB2 and TEF-1, Thyridaria forms a strongly supported lineage in Thyridariaceae. Saccardo (1875) wrongly based T. incrustans on Cucurbitaria broussonetiae. Jaklitsch and Voglmayr (2016) designated a lectotype (W 2009-01175) from a material collected from Italy, on Broussonetia papyrifera. Jaklitsch and Voglmayr (2016) also chose an epitype from Hungary, and clarified the taxonomy of Thyridaria. Thyridaria is morphologically and phylogenetically a well-defined and type genus of Thyridaria. Molecular markers available for Thyridaria are ITS, LSU, RPB2, SSU and TEF-1.

 

 

Recent News

Recent paper to be published

Recent Genus

Nothocladosporium
Phillipsiella
Curreya

Recent Species

Nothocladosporium syzygii
Phillipsiella atra
Curreya conorum