Marasmius epiphylloides

General: Strictly host-specific on wet decaying fallen leaves of ivy (Hedera helix), pileus minute (2-5 mm diam.), white, lamellae broad and distant, stipe up to 2.5 cm long, very slender (0.2-0.4 mm thick), whitish and finely floccose-scaly throughout.

Pileipellis: Composed of thick-walled pyriform to vesiculose broom-cells 17-30 x 10-15 µm, covered with coarse digitations.

Caulocystidia: Abundant, thick-walled, fusiform to lageniform, some subcapitate.

Cheilocystidia: Dimorphic: fusiform to lageniform (some subcapitate) elements 50-65 x 8-10 µm, intermixed with diverticulate vesiculose broom-cells resembling pileipellis cells.

Basidia: Cylindric-clavate, 30-35 x 5-7 µm, with basal clamp connections, 4-spored.

Spores: Cylindrical, smooth, hyaline, thin-walled, 10.5-12.5 x 3-4 µm, pointed at the apicular pole, containing coarse lipid guttules.