Dothideomycetes » Dothideomycetes, genera incertae sedis

Phycorella

Phycorella Döbbeler, Sydowia 33: 33 (1980).

 Index Fungorum number: IF 4046; Facesoffungi number: FoF 12400, 1 morphological species (Species Fungorum 2022), no molecular data available.

Biotrophic on Scytonema, infects single cells by haustoria. Sexual morph: Ascomata solitary or scattered among or sitting on algal filaments, spherical or slightly longer than wide, colorless. Peridium comprised of nearly isodiametric or slightly irregular cells. Ostiole not prominent. Paraphyses absent. Asci 8-spored to few, ellipsoidal to cylindrical, bitunicate, with a broadly rounded end and a short, broad pedicel. Ascospores overlapping irregularly arranged, ellipsoidal, hyaline, 2-celled, and smooth-walled. Hyphae colorless, branched, irregularly extending between the filaments of the alga. Appressoria roundish in outline, sitting sideways or stalked, rarely intercalary, not always distinct from the mycelium. Haustoria globose, usually individually inside the host cells. Asexual morph: Unknown (adapted from Doilom et al. 2018).

Type species: Phycorella scytonematis Döbbeler

Notes: Phycorella is characterised by solitary or scattered ascomata, ellipsoidal to cylindrical, bitunicate asci, ellipsoidal, hyaline, 2-celled, and smooth-walled ascospores. Lumbsch and Huhndorf (2010) and Kirk et al. (2013) listed Phycorella in Dothideomycetes, genera incertae sedis. Doilom et al. (2018) examined the holotype of P. scytonematis and retained Phycorella in Dothideomycetes, genera incertae sedis. Wijayawardene et al. (2017, 2020) also listed Phycorella in Dothideomycetes, genera incertae sedis. Fresh collections with DNA sequence data are needed to confirm the systematic position of Phycorella.

 

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