Stilbella sebacea

On old decaying basidiomes of Stereum, with pubescent, cylindrical, slightly capitate, powdery synnemata 300 to 750 µm high, head width 100 to 250 µm, white to pale ochre.

Stipe support hyphae hyaline, 2 to 3 µm wide, arranged parallel to each other.

Conidiophores hyaline, 1.5 to 2 µm wide.

Conidiogenous cells cylindrical to subulate, with one to three hyaline phialides, 35 to 50 µm long and 2 to 2.5 µm wide.

Conidia subglobose, ovoid to ellipsoidal, smooth, hyaline, thick-walled (wall thickness up to 0.5 µm), 4.5 to 8 µm long, 3.8 to 5 µm wide, with homogeneous contents or one to two guttules.