Holotype (PDD 27067); Isotype (Herb. HK. ZT 67/102): 'Kowai Bush, Mt. Grey, Prov. Canterbury, N.Z.; leg. Horak, 15.X.1967'.

Gastrocarp 20-35 x 15-20 mm, subglobose, depressed globose or irregularly tuberiform, peridium 1 mm thick, frequently peeling off and exposing parts of the gleba, whitish-yellowish becoming brownish at maturity, dry, smooth, without veil remnants. Gleba loculate, cells up to 2 mm diam., not radially arranged, neither exposed nor dehiscent from the base of the stipe, coffee brown to rust brown. Stipe absent or button-like, resembling a subgleba in the Lycoperdaceae concolorous with the peridium. Context whitish. Odor and taste not distinctive. Chemical reactions on peridium: unknown.
Spores 12-15 x 9-11 µm, broadly ovate or subglobose, very coarsely warted, with prominent apiculus, ferruginous. Basidia 30-35 x 10-12 µm, 4-spored. Cystidia absent. Epicutis consisting of cylindrical, repent, hyaline, not gelatinised, thin-walled hyphae forming a cutis, without conspicuous pigment; subcutis cellular. Clamp connections not observed.

On ground amongst litter under Nothofagus cliffortioides and N. solandri. New Zealand.

Gastrocarpio 20-35 x 15-20 mm, subgloboso vel oboideo, ex albido luteolo, brunnescente, sicco, glabro, velo nullo. Gleba lacunosa, haud exposita, brunnea dein ferruginea. Stipite nullo vel haud bene evoluto, turbiniformi, peridio ad marginem confluente. Odore saporeque nullo. Sporis 12-15 x 9-11 µm, grosse verrucosis, ovoideis, ferrugineis. Basidiis 4-sporigeris. Cystidiis nullis. Epicute ex hyphis cylindraceis repentibus et cutem formantibus, membrana hyalina haud gelatinosa instructis, fibulis non visis Ad terram inter folias in silvis nothofagineis. Novazelandia.

This species is characterised by the pale yellow colour of the peridium, absence of stipe-columella and the coarsely warted spores. It is closely related to Th. nivale Hk. but differs in the dry cuticle and smaller sized spores.

Holotypus (PDD 27067): 'Kowai Bush, Mt. Grey, N.Z.; leg Horak, 15.IX.1967'.