Dubujianaceae D. Pem, Doilom & K.D. Hyde, fam. nov.
Index Fungorum number: IF557065; Facesoffungi number: FoF 06679
Endophytic, saprobic or pathogenic on leaves. Sexual morph: Undetermined. Asexual morph: Mycelium at first subcuticular, developing onto leaf surface from leaf glands forming scattered to sporadically confluent superficial thalli, circular in outline, composed of a basal layer of flattened, parallel, branching, brown hyphae with setae. Non-hyphopodiate hyphal strands radiate from base of central, raised pycnidium over the basal layer and onto the substrate. Conidiomata wall composed of thick dark-brown walled cells of textura globulosa. Conidiophores densely aggregated, slender, subulate, simple, frequently branched above, reduced to conidiogenous cells, or with 1–2 supporting cells. Conidiogenous cells annellidic, simple, tapering, hyaline, smooth, rarely with percurrent proliferations. Conidia ellipsoidal, fusiform to lunate, hyaline becoming pale brown at maturity, 1-septare, punctate, non-constricted, smooth-walled.
Family type – Dubujiana D.R. Reynolds & G.S. Gilbert
Notes – The family Dubujianaceae is introduced to accommodate the monotypic genus Dubujiana based on its epifoliar lifestyle and unique pycnidia that arise from leaf glands in the outer portions of the hyphal system with individual hyphal strands extending from the large central pycnidium. We introduce the new family Dubujianaceae, because it has a set of unique characters namely ahyphopodiate pycnidia, conidiomata wall composed of dark-brown walled cells of textura globulosa and 1-septate, punctate hyaline to pale brown conidia that differ from other families of Dothideomycetes.