Colonies effuse, extensive and greyish brown. Mycelium composed of immersed branched septate subhyaline to brown hyphae 2-4.5 µm diam. Mycelial setae 150-250 (-310) µm long and 4-5.5 µm diam. at the base, arising singly or in groups of 2 or 3 from knots of hyphal cells, erect, straight or gently curved, smooth, multiseptate, dark brown and thick-walled toward the base, pale brown to subhyaline toward the apex which almost always develops into a conidiogenous cell. Anamorph: conidiomata absent. Conidiophores 80-110 µm long and to 4 µm diam. at the base, arising singly or in small groups from knots of hyphal cells associated with the bases of setae, ± cylindrical, erect or ascending, slightly to markedly geniculate or undulating toward the apex, unbranched, pale brown at the base, paler toward the apex, multiseptate, with a single conidiogenous cell at the apex with a terminal narrow neck and very conspicuous funnel-shaped collarette; proliferating percurrently and also sympodially with the original collarette being displaced to a lateral position. Conidia (9-) 12-17 x 2-2.5 (-3) µm, aseptate, hyaline, curved, asymmetrical, bluntly rounded at the distal end and proximally slightly tapered with an inconspicuous scar, bearing straight or slightly curved setulae (5-)7-8 (-10) µm long at each end; terminally or subterminally at the distal end and to one side of the basal scar. Teleomorph: not known.