Mycosphaerellales » Mycosphaerellaceae

Mycoporis

Mycoporis Clem., Gen. fung. (Minneapolis): 50 (1909).

Index Fungorum number: IF 5909; Facesoffungi number: FoF 00120, 1 morphological species (Species Fungorum 2022), no molecular data available.

Associated with leaf spot. Sexual morph: Ascomata appearing as black spots on the host surface, gregarious, scattered, superficial, very easily removed from the host surface, globose, uniloculate, ostiolate. Peridium one layered, composed of dark to brown cells of textura angularis. Hamathecium lacking pseudoparaphyses. Asci 8-spored, bitunicate, broadly cylindrical to fusiform, sessile, with a large ocular chamber. Ascospores overlapping, uniseriate at the apex to tri-seriate near the base, hyaline, 5-septate, strongly constricted at the primary septum, broadly fusiform to cylindrical with broadly rounded ends. Asexual morph: Unknown (adapted from Thambugala et al., 2014 and Videira et al., 2017).

 Type species: Mycoporis perexigua (Müll. Arg.) Clem.

Notes: Mycoporis is characterised by black spots on the host surface, broadly cylindrical to fusiform, sessile asci and hyaline, 5-septate, fusiform to cylindrical ascospores with broadly rounded ends. Mycoporis perexigua was previously known as Mycoporellum perexiguum but was not congeneric with the type of Mycoporellum, M. sparsellum. Zahlbruckner (1922) referred Mycoporis in Mycoporaceae. Hawksworth et al. (1995) and Lumbsch and Huhndorf (2010) included Mycoporis in Dothideaceae. Thambugala et al. (2014) re-examined the holotype specimen of M. perexigua (G 00110864) and transferred Mycoporis to Mycosphaerellaceae based on the ascomatal characters. The placement of Mycoporis in Mycosphaerellaceae is doubtful. Fresh collections with DNA sequence data are needed to confirm the taxonomic placement of Mycoporis.

 

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