Capnodiales » Teratosphaeriaceae


Palmeiromyces D.R.S. Pereira & A.J.L. Phillips, Phytopath. Mediterr. 59(2): 360 (2020).

Index Fungorum number: IF 834638; Facesoffungi number: FoF 11393, 1 morphological species (Species Fungorum 2022), 1 species with molecular data.

Pathogenic on host. Sexual morph: Ascomata pseudothecial, amphigenous, subepidermal, immersed to erumpent, scattered or clustered, globose to subglobose, dark-brown, ostiolate. Ostiole circular, aperiphysate. Peridium thin-walled, composed of cells forming a textura angularis, outer layer composed of thick-walled, dark-brown to brown cells, inner layers composed of thin-walled, hyaline cells. Pseudoparaphyses absent. Asci bitunicate, fissitunicate, pyriform to obovoid, with well-developed ocular chamber, smooth walled, hyaline, 8-spored. Ascospores biseriate, hyaline, broadly ellipsoidal to subcylindrical, with rounded ends, smooth- and thin-walled, medianly uniseptate, not constricted at the septum. Asexual morph: Unknown (adapted from Pereira and Phillips 2020).

 Type species: Palmeiromyces chamaeropicola D.R.S. Pereira & A.J.L. Phillips

Notes: Palmeiromyces is characterised by pseudothecial, amphigenous, subepidermal ascomata, pyriform to obovoid asci and broadly ellipsoidal to subcylindrical ascospores. Palmeiromyces is phylogenetically closely related to members of Teratosphaeriaceae. Palmeiromyces resembles members of Teratosphaeriaceae in having ascospores with an atypical mode of germination, lacks asexual morph and has slow growth in culture (Crous et al. 2007). Palmeiromyces differs from members of Teratosphaeriaceae in lacking mucous sheaths (Crous et al. 2007; Quaedvlieg et al. 2014). Palmeiromyces is morphologically and phylogenetically a distinct genus in Teratosphaeriaceae. Molecular markers available for Palmeiromyces include ITS and LSU.


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