New Zealand: "North Island, Urewera National Park, Tawa Track; 24.vi. 1968, leg. Horak (PDD, 27125: holotype; ZT, 68/580: isotype)".

Pileus -10 mm diam., hemispherical becoming convex, umbo absent; uniformly light brown; disc smooth, towards margin innately fibrillose; dry, veil remnants absent. Lamellae adnexed, crowded (L 6-12, 1 3), ventricose; beige turning light brown, white fimbriate edges. Stipe 10-15 x 1-1.5 mm, cylindrical, equal; light brown, near apex white pruinate, towards base with white appressed fibrils; dry, hollow, fragile, single in groups. Context brownish. Odour not distinctive.
Spores 8-9 x 4.5-5.5 µm, amygdaliform, smooth, brown. Basidia 20-25 x 7-8 µm, 4-spored. Cheilo-, pleuro-, and caulocystidia 35-70 x 8-15µm, cylindrical to subfusoid, metuloid (-2 µm diam.), encrusted, yellowish (in KOH). Cuticle a cutis of cylindrical fusoid cells (8-12 µm diam.), encrusted with brown pigment. Clamp connections numerous.

Pileo -10 mm lato, e hemisphaerico convexo, argillaceo, fibrilloso. Lamellis adnexis, argillaceis. Stipite -15 x 1.5mm, cylindrico, pileo concolori, apicaliter pruinoso. Odore nullo. Sporis 8-9 x 4.5-5,5 µm, amygdaliformibus. Cystidiis fusoideis, metuloideis, incrustatis, Habitatio ad terram sub Nothofago et Leptospermo. Nova Zeiandia. Typus (PDD, 27125).

When identified macroscopically in the forest this fragile, pale brownish Inocybe reminds one of Phaeomarasmius. However, the presence of crystal-bearing cheilo-, pleuro-, and caulocystidia undoubtedly places this species in Inocybe.

On soil under Nothofagus (N. fusco), Leptospermum, and Elaeocarpus. New Zealand.