Diplocladiella scalaroides G. Arnaud ex M.B. Ellis, More Dematiaceous Hyphomycetes (Kew): 229 (1976)
MycoBank number: MB 296790; Index Fungorum number: IF 296790; Facesoffungi number: FoF 12798;
Saprobic on submerged decaying wood in a freshwater stream. Asexual morph: Colonies effuse, subhyaline to pale brown, velvety, glistening, with masses of conidia on conidiophores Mycelium mostly immersed, consisting of branched, septate, smooth, subhyaline to pale brown hyphae. Conidiophores macronematous, mononematous, smooth-walled, septate, erect, straight or slightly curved, flexuous on conidiogenensis part, solitary or fasiculate, cylindrical, colorless to pale brown, 19–47.5 × 2.6–4 μm. Conidiogenous cells polyblastic, integrated, terminal, determinate, hyaline or subhyaline to pale brown, geniculate, with sympodial proliferations. Conidia acropleurogenous, solitary, Y-shaped, with two horned arms, a middle pentagonal cell and trapezoidal basal cell from front view, septate, smooth-walled, hyaline when young, becoming pale olivaceous green to pale brown, the two tip cells hyaline to subhyaline, sometimes extending, the basal cell hyaline to subhyaline or pale brown, axis 10–12.3 μm long (x̅ = 10.8 µm, n = 30). (Fig, 44, m1 yellow line), pentagonal cell 5.2–6.8 μm wide ( = 5.9 µm, n = 30) (Fig. 44, m2 green line), arms 8–15.7 × 4.5–7 μm ( = 11.8 × 5.6 µm, n = 60) (Fig. 44, m4 blue line and m3 orange line), 17–25.5(–30) µm wide between two horns tip. Sexual morph: Undetermined.