New Zealand: "Nelson, Richmond Range, Pine Valley; 5.1.1968, leg. Horak (PDD, 27119: holotype; ZT, 68/5: isotype)". "Nelson, Richmond Range, Goulter Valley; 7.1.1968, leg. Horak (ZT, 68/15)."

Pileus -35 mm diam., hemispherical, becoming umbonate-convex or campanulate; yellowish brownish; radially fibrillose, rimose to splitting, squamulose at disc; dry, veil remnants absent. Lamellae adnexed to emarginate-adnate; yellowish beige turning olive-beige, later deep brown, white with fimbriate edges; crowded (L 16-22, 13), ventricose. Stipe 20-50 x 3-8 mm, cylindrical, subclavate towards base, robust; whitish, becoming yellow-brownish at base, covered with concolorous fibrils, pruinate in upper parts; dry, cortina absent, hollow, single in groups. Context whitish beige. Odour none.
Spores 9-12 x 4.5-6.5 µm, kidney shaped, smooth, brown. Basidia 25-32 x 8-12 µm, 4-spored. Cheilocystidia in dense clusters, 15-60 x 8-15 µm, cylindrical to clavate, thin-walled, not encrusted, forming sterile edge. Pleuro- and caulocystidia absent. Cuticle a cutis of cylindrical hyphae (5-12 µm diam.), encrusted with yellow-brown pigment. Clamp connections numerous.

On soil under Leptospermum (L. ericoides) and/or Nothofagus (N. cliffortioides, N. menziesii). New Zealand.

Inocybe renispora is closely related to I. fastigiata (Schaeff. ex Fr.) Quel„ a common species in different plant associations in the Northern Hemisphere. The New Zealand taxon differs by having smaller spores, articulate cheilocystidia, and lacking odour.

Pileo -35 mm lato, ex hemisphaerico umbonato-convexo, luteo-avellaneo, fibrilloso-subrimoso. Lamellae Stramineo tabacinis, emarginato-adnexis. Stipite 50 x -8 mm, subclavato, albido, basim versus lute-brunneolo, minute fibrilloso, velo nullo. Odore nullo. Sporis 9-12 x 4.5-6.5 µm, phaseoliformibus, levibus. Cheilocystidiis clavatis, tenuitunicatis, baud incrustatis. Habitatio ad terrain in silvis virgineis. Nova Zeiandia. Typus (PDD, 27119).