Colonies form on and between the host leaves, gregarious, composed of superficial to partially immersed mycelium that bears conidiogenous cells, and vegetative bulbils. Bulbils 16-30 (-50) µm diam., applanate to globose, dark brown, composed of globose thick-walled cells. Hyphae 1-3 µm diam., pale to mid brown, sometimes forming strands and also mycelial plates, closely following the host’s anticlinal cell walls and thus mirroring the cell net. Anamorph: conidiomata absent, conidiophores not differentiated. Conidiogenous cells arising directly from vegetative hyphae, 3.5–4.5 × 3–4 μm, aggregated, subglobose to conical or broadly ampulliform, laterally sometimes deformed by mutual pressure; recognizable by a large apical pore 0.5–1 μm diam. (visible as a pale spot in transmitted light). Conidia 8.1-10.2 x 3.4-3.7 µm, (5.2-6.2 µm long if 1-septate, to 11.5 μm long if conidia 3-septate), solitary, narrowly ellipsoidal, straight or occasionally slightly bent, smooth, pale brown, 2-septate, rarely 1- or 3-septate, strongly constricted at the septa; the middle cell usually the broadest, end cells usually unequal in shape, without a recognizable scar, smooth, thin-walled, without a gelatinous sheath or appendages. Teleomorph: not known.
Description based in part on Döbbeler & Braun (2021).