Dactuliophora
Dactuliophora C.L. Leakey, Trans. Br. mycol. Soc. 47(3): 341 (1964).
Index Fungorum number: IF 7915; Facesoffungi number: FoF 00512, 4 morphological species (Species Fungorum 2022), no molecular data available.
Parasitic on leaves. Leaf spots broadly zonate on upper leaf surface, rosette-like with alternating whitish and tan-colored bands. Sexual morph: Unknown. Asexual morph: on lower surface densely covered with sclerotiophores and sclerotia, zonation less distinct. Mycelium immersed, colorless, diffused throughout the tissues in the leaf spot and aggregated in plectenchymic masses beneath the sclerotiophores. Sclerotiophores consist of a fully erumpent ring of dematiaceous hyphae continuous with a subepidermal plectenhymic mycelial mass. Scleotia scattered, mainly on the paler parts of the leaf spot, generally hypophyllous but occasionally amphigenous, spherical to subspherical, bearing scattered setae or sometimes glabrous, dematiaceous external cells, internal cells colorless, undifferentiated. Scleotial setae when present more or less cylindrical but sometimes slightly sinuate, up to slightly attenuated distally to a blunt tip, dematiaceous or colorless 0-13 septate (adapted from Leakey 1964).
Type species: Dactuliophora tarrii C.L. Leakey
Notes: Dactuliophora is characterised by rosette-like leaf spots, immersed, colorless mycelium, scattered sclerotia, more or less cylindrical 0–13 septate sclerotial setae. Wijayawardene et al. (2014) and Ariyawansa et al. (2015) placed Dactuliophora in Pleosporaceae. Hongsanan et al. (2020b) and Wijayawardene et al. (2020) listed Dactuliophora in Dothideomycetes genera incertae sedis due to lack of molecular data. Fresh collections of the type species and molecular data are needed to verify the natural taxonomic affinities of Dactuliophora.
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