OTHER SPECIMENS EXAMINED: SOUTH ISLAND: BULLER: Nelson Lakes National Park, Lake Rotoiti, R. E. Beever, 23 Apr 1986, PDD 55482. NELSON: Glenhope-Tapawera Rd, J. Trappe 12606 & M. Amaranthus, 25 Sep 1992, MEL 2063483, OSC.

Basidiomata 12-22 x 8-20 mm, subglobose to slightly irregular. Peridial surface dry, smooth, with some shallow pitting, white. Gleba white to ivory, loculate, chambers minute, crowded, compacted to appear almost solid. Stipe absent. Columella absent or present as a faint trace of sterile tissue near base, not percurrent. Odour and taste mild, not distinctive. Latex absent. Peridiopellis 6-13 µm wide, a thin ixocutis of repent to patchily upright, tightly interwoven, gelatinised, hyaline hyphal tips 2-5 µm diam. Peridial context 50-90 µm wide, of interwoven, hyaline hyphae 2-3 µm diam. and scattered, septate, inflated hyphae 3-5.5 µm diam. Sphaerocysts and endocystidia absent. Hymenophoral trama 10-22 µm wide, of tightly interwoven, hyaline hyphae 2-4 µm diam. and scattered, inflated hyphae 4-6 µm diam., sphaerocysts absent. Subhymenium 9-14 µm wide, of branched hyphae with some inflated cells forming 1-2 tiers of irregular cells 5-8 µm diam. Basidia 25-32 x 10-12 µm, hyaline, clavate to cylindrical, with 2, 3, and 4 sterigmata 4-7 µm long. Cystidia 25-42 x 8-11 µm, clavate to cylindrical with obtuse apices, hyaline, rare. Spores 7-9 x 7-8.6 µm (8.55 ± 0.34 x 8.1 ± 0.5), Q = 1.03-1.11, globose to subglobose, orthotropic. Ornamentation amyloid, crowded, of isolated spines ± 1 µm high. Hilar appendix small, hyaline, central; plage present, inconspicuous, the ornamentation slightly lower around plage. Spore colour in mass white.

HABITAT AND DISTRIBUTION: Hypogeous, in small clusters under leaf litter in Nothofagus menziesii, N. fusca, and N. solandri forests. Fruiting period Aug-Sep.

Gasterocarpus 12-22 x 8-20 mm, subglobosus vel irregularis. Peridium albidum. Gleba albida velebernea, loculata. Stipes nullus; columella nulla. Peridiopellis tenuissima, ex hyphis agglutinatis. Basidia 25-32 x 10-12 µm, 2 vel 4 sporigera. Cystidia 25-42 x 8-11 µm, rara. Sporae 7-9 x 7-8.6 µm, globosae vel subglobosae, spinis aggregatis ad ± 1 µm altis amyloidibus ornatis.

HOLOTYPUS (hic designatus): New Zealand, South Island, Buller, Murchison, Matakitaki Bridge Scenic Reserve, R. E. Beever, 10 Aug 1998, PDD 69223.