Under (1)' N. fusca, Nelson: L. Daniels track, 13.v. 1969, 15.V.1969, R. F. R. McN. (2) 'N. fusca and N. menziesii, Nelson: L. Daniels track, 14.V.1969, R. F. R. McN. (3) N. menziesii. Nelson: Karamea, Umere, 2.i.l969, 8.i.l969, R. F. R. McN. (holotype, pdd 30653); Umere, 29.xii.l969, R. F. R. McN; L. Daniels track, 14.V.1969; 15.V.1969, R. F. R. McN. (4) N. solandri, Canterbury: Craigieburn, 5.ii.1969, B. Segedin; Wellington: Tongariro National Park, Whakapapaiti Stream, 2.V.1967, R. F. R. McN. (5) Nothofagus sp. Nelson, Lewis Pass, l.ii.l970, A. P. Mulcock.

pileus: 1.5-4.5 cm diam., hemispherical when young, centrally depressed at maturity, dry at first, becoming viscid with age and under wet conditions, glabrous or occasionally finely areolately creviced towards margins, finely innately pruinose under lens, velar remnants absent, red to dark red in centre, paling to greyish rose, rose, or pink at margins, sometimes creamy white to pallid cream with pink, rose, purplish grey, or yellowish tints; margins entire, thin, non-pectinate or faintly pectinate in places. Cuticle to 150 µm thick, composed of erect, hair-like hyphae and pilocystidia forming a palisade, becoming disorganised and gelatinised with age; hair-like hyphae thin-walled, smooth, septate, 2.5-4 µm diam., terminal cells unspecialised; pilocystidia subclavate to clavate, thin-walled, apices bluntly acuminate, contents refractive in KOH, 40-100 X 6-12,5 µm. lamellae: adnate, moderately crowded, thin, simple or occasionally forked near stipe, to 4 mm deep, white, not discoloured at maturity, lamellulae rare or absent. stipe: 2-4 cm long, ±: equal or slightly expanded basally, 0.5-1.2 cm diam., dry, solid, finely subpruinose under lens, white; unchanging on exposure to air. Cuticle a disorganised palisade or thin-walled, septate hyphae and numerous subclavate to clavate caulocystidia. spores: spore print not obtained; spores broadly elliptical to ovate, obliquely apiculate, apiculus to 1.5-(2) µm long, 10-12 X 9-10.5 µm, ornamentation of moderately dense, amyloid, truncated spines to 1.5-(1.8) µm high, solitary, in small confluent groups, or joined basally by fine amyloid ridges and forming an almost complete reticulum; plage inconspicuous. hymenium: basidia hyaline, clavate, 39-52 X 10,5-15 µm, 4-spored, sterigmata to 7 µm long; pleurocystidia scattered, numerous, fusiform to broadly fusiform, hyaline, thin-walled, contents refractive in KOH, projecting to 15 µm beyond basidia, apices acuminate or slightly strangulate, 54-98 X 9-14.5 µm; cheilocystidia similar to pleurocystidia but shorter. hymenophoral trama: heteromerous, intermixed. context of pileus: white, unchanging, structure heteromerous, clamp connections absent. smell: not distinctive. taste: lamellae and context extremely acrid. chemical characters: formalin on context—n.r.: phenol on context—slowly deep vinaceous; FeSO4 on context—rapidly salmon pink: guaiacol on stipe base—slowly pinkish red; KOH on pileus—red colours disappearing leaving area orange; on context—n.r.; NH4OH on pileus and context— n.r.

Gregarious under Nothofagus.

Pileus hemisphaericus centraliter depressus 1.5-4.5 cm diam. ruber ad fuscum, viscidus, glaber; veli vestigia deficiunt; margines pallidiores, integri, tenues, non pectinati. Lamellae adnatae ad 4 mm altae, albae; lamellulae rarae. Stipes 2-4 cm longus, plus minusve aequalis, 0.5-1.2 cm diam., solidus, siccus, albus. Sporae late ellipticae vel ovatae, 10-12 x 9-10.5 µm, amyloides dense ornatae.

holotype, pdd 30653