Myriangiales » Myriangiaceae

Eurytheca

Eurytheca De Seynes, Bull. Soc. bot. Fr. 25: 88 (1878).

Index Fungorum number: IF 197; Facesoffungi number: FoF 06546, 3 morphological species (Species Fungorum 2022), no molecular data available.

Saprobic on bark. Sexual morph: Ascostromata superficial, scattered, solitary or aggregated, carbonaceous, erumpent through the ruptured epidermis, black, orbicular to irregular, multi-loculate, locules scattered in the outer region of the ascostromata, one ascus in each locule, ostiolate. Ostiole minute. Paraphyses absent. Cells of the ascostromata comprising several layers of thick-walled textura globosa pigmented cells. Asci 8-spored, bitunicate, fissitunicate, globose to saccate, short pedicellate, with indistinct ocular chamber. Ascospores hyaline, fusiform, 3–6-transverse septa, longitudinal septa absent, not constricted at the septa, base or both base and apical end bluntly tapered, smooth-walled, lacking a sheath. Asexual morph: Unknown (adapted from Dissanayake et al. 2014).

Type species: Eurytheca trinitensis Syd. & P. Syd

Notes: Eurytheca was placed in the family Saccardiaceae by Höhnel (1917). Lumbsch and Huhndorf (2007) transferred Eurytheca to Myriangeaceae. The description of Eurytheca underwent many changes in recent years with the ascospores being described as 10–14-septate by Sydow and Sydow (1914), and 4–5-septate by Theissen and Sydow (1917). Dissanayake et al. (2014) described E. trinitensis as 4–5-septate. Eurytheca is currently in Myriangiaceae. DNA sequence data is needed to confirm this placement.

 

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