SPECIMENS EXAMINED: SOUTH ISLAND: NELSON: Murchison, Tapawera Rd, R. E. Beever, M. Castellano, & M. Amaranthus s.n. [Trappe12611], 15 Sep 1992, MEL 2063485; Tapawera Rd, M. Amaranthus s.n. [Trappe 12619], 25 Sep 1992, PDD; Tapawera Rd, J. Trappe 12615, 25 Sep 1992, PDD; Tapawera Rd, M. Castellano & M. Amaranthuss.n. [Trappe 12609], 25 Sep 1992, MEL 2063487; Tapawera Rd, J. Trappe 12622, 25 Sep 1992, MEL 2063486; Tapawera Rd, J. Trappe & R.E. Beever s.n. [Trappe 12621], 25 Sep 1992, MEL, OSC. BULLER: west bank of Matakitaki River by Johnson Creek, J. Trappe 12573, 24 Sep 1992, PDD, OSC.

Basidiomata 3-9(15) x 5-13(27) mm, subglobose to irregular, indented slightly at central base. Peridial surface dry, smooth or radially furrowed at base, white to pale olivaceous, bruising pale purple-brown to black on some specimens. Gleba white to ivory in youth, in age developing brown areas, loculate, chambers small, compressed. Stipe absent or rarely present, 1-3 x 1-2 mm, white, solid, enclosed by gleba. Columella 0.5-3 mm wide, percurrent or not, present in most basidiomata, sordid white. Odour not distinctive; taste mild. Latex absent. Peridiopellis 30-64 µm wide, a trichodermium of septate, inflated hyphae 4-11 µm diam., appearing as irregularly shaped cells, with terminal cells a dense to patchy turf of upright to repent, elongated clavate or cylindrical, cystidia 35-53 x 5-9.5 µm, with granular contents refractive in KOH. Peridial context 35-80 µm wide, of short, interwoven, ± parallel,hyaline hyphae, 1.5-3.5 µm diam.; sphaerocysts absent. Endocystidia and laticiferous hyphae absent. Stipitipellis when present 7-13 µm wide, a cutis of hyphae 2-4 µm diam. Stipe context of interwoven, hyaline hyphae 2-4 µm diam. Hymenophoral trama 16-28 µm wide, of interwoven, hyaline hyphae 1-3 µm diam., sphaerocysts absent. Subhymenium 9-17 µm wide, cellular-ramose, with 1-3 tiers of ±isodiametric cells 4-13 x 4-10 µm. Basidia 25-35x 10-12 µm, broadly clavate to clavate, hyaline, with 4 slightly incurved sterigmata 5-7 µm long. Cystidia 39-60 x 8-11 µm, clavate to cylindrical or fusoid, with obtuse to shortly rostrate apices and granular contents, refractive in KOH; especially abundant in immature basidiomata, arising in subhymenium, protruding beyond basidia. Spores 10-12(14) x 9-10.5(14) µm (10.78 ± 0.68 x 9.6 ± 0.58), Q = 1.1-1.16, subglobose to ellipsoid, orthotropic. Ornamentation amyloid, of isolated warts and lowridges of warts, connected into short branching lines, 0.5-0.8 µm high, sometimes in a partial reticulum; some spores with only the apices of warts and ridges amyloid. Hilar appendix small, 1-2 x 1 µm, central, hyaline, inconspicuous; plage absent. Spore colour in mass cream colour.

HABITAT AND DISTRIBUTION: Hypogeous in small groups under leaf litter in Nothofagus forest orLeptospermum scoparium thickets. Fruiting period: Sep.

Gasterocarpus 3-9(15) x 5-13(27) mm, subglobosus vel irregularis. Peridium albidum vel pallidoolivaceum interdum contusum ubi pallidum atropurpureo-brunneum vel fuligineum. Gleba albida vel eburnea, in maturitas maculis brunneus, loculata. Stipes nullus vel rarus, albidus; columella albida, interdum percurrens. Peridiopellis trichodermium, ex hyphis inflatus 4-11 µm latis subter caespite ex cystidiis terminalis erectis vel repentibus, 35-53 x 5-9.5 µm compositum. Basidia 25-35 x 10-12 µm, 4 sporigera. Cystidia 39-60 x 8-11 µm, abundans. Sporae 10-12(14) x 9-10.5(14) µm, subglobosae vel ellipsoidae, amyloideae, verruculis seggregatis vel lineis brevis ramosis interdum connexis vel reticulatis partiali, 0.5-0.8 µm altis ornatae.

HOLOTYPUS (hic designatus): New Zealand, Nelson, Tapawera Rd, J. Trappe 12607, M. Castellano & M. Amaranthus s.n., 25 Sep 1992, PDD (isotype MEL 2063488, OSC).