Dothideomycetes » Dothideomycetes, genera incertae sedis

Protographum

Protographum Le Renard, Upchurch, Stockey & Berbee, in Le Renard et al., Mycologia 112(3): 511 (2020).

 Index Fungorum number: IF 831507; Facesoffungi number: FoF 12431, 1 morphological species (Species Fungorum 2022), 1 species with molecular data.

Mycelium superficial on leaves with intercalary appressoria, hyphae septate. Sporocarp shield like, covered by scutellum (upper wall), appressed to host surface, circular or elongate. Scutella made of pseudomonopodial, dichotomously branching and radiating hyphae; scutellum connected to surrounding mycelium by multiple generator hyphae (adapted from Le Renard 2020).

 Type species: Protographum luttrellii Le Renard, Upchurch, Stockey & Berbee

Notes: Protographum is characterised by intercalary appressoria, septate hyphae, shield like sporocarp covered by scutellum and scutella pseudomonopodial, dichotomously branching and radiating hyphae. Protographum luttrellii differs from other fossil taxa by pseudomonopodial dichotomous branching in a scutellum originated from several generator hyphae (Le Renard 2020). Protographum lacks asci and ascospores, the mode of dehiscence is unknown. Protographum resembles living Aulographaceae species. Wijayawardene et al. (2020) listed Protographum in Dothideomycetes genera incertae sedis.

 

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