[GS] Pileus 3-10 mm. diam., bright luteous, drying paler, hemispherical becoming plane, matt; flesh luteous. Gills decurrent, luteous, triangular, thick, distant, with a few folds or ridges between, rarely forked. Stipe 1-2 cm. X 1 mm., luteous, smooth or indistinctly striate, solid, moderately tough. Spores 8-9 X 4-5um amyloid (Fig. 1/34, p. 10); basidia 30-35 X 5-8um. Hymenophoral trama irregular, of loosely woven hyphae up to 5um diam. HABITAT: in mountain grassland, Molesworth, 2.4.1949, H H Allan; Arthur's Pass, 4.6.1949, M. Hamilton in Stevenson. [EH] According to unpublished data of Horak and McNabb, this species seems to be a member of the genus Hygrophoropsis rather than anything else. Both genera are characterised by vein-like, forked gills but are clearly separated by distinct microchemical reactions of the spore wall. [JC] the spores are inamyloid, or perhaps very faintly amyloid, not dextrinoid, thus not Hygrophoropsis. I'm sure there is an unamed Hygrophoropsis but this isn't it. The stems are associated with a bound lump of soil which has algal globose cells. This is quite clearly a Lichenomphalia related to the NZ complex called L. 'alpina' (unfortunately similar epithet). i.e, + L. 'Lewis' & L. umbellifera ss NZ. Amongst the possibilities L. umbellifera ss NZ is identical in morphology and that also with collections from from Arthur's Pass. This recorded as L. umbellifera from the campbell Islands. Cap a cutis of unclamped hyphae, some thick-walled/glassy. 4-spored. Basidia with basal clamp (not seen on all basidia). Spores length=7.8–9.9µm (µ=8.7, σ=0.63), width=4.1–5.5µm (µ=4.7, σ=0.35), Q=1.4–2.1µm (µ=1.88, σ=0.19), n=20. Requires a nom. nov. as L. stevensoniae

According to unpublished data of Horak and McNabb, this species seems to be a member of the genus Hygrophoropsis rather than anything else. Both genera are characterised by vein-like, forked gills but are clearly separated by distinct microchemical reactions of the spore wall.

[Notes from Kew Type specimen, PRJ 2010] Kew images.

Pileus 3-10 mm diam., bright luteous, drying paler, hemispherical becoming plane, matt; flesh luteous. Gills decurrent, luteous, triangular, thick, distant, with a few folds or ridges between, rarely forked. Stipe 1-2 cm x 1 mm, luteous, smooth or indistinctly striate, solid, moderately tough. Spores 8-9 x 4-5 µm amyloid (Fig. 34); basidia 30-35 x 5-8 µm Hymenophoral trama irregular, of loosely woven hyphae up to 5 µm diam.

In mountain grassland, Molesworth, 2.4.1949, H. H. Allan; Arthur's Pass, 4.6.1949, M. Hamilton in Stevenson (type).

Pileus 3-10 mm diam., laete luteus, siccitate pallidius, hemisphaericus, deinde planus, haud nitidus; came lutea. Lamellae decurrentes, luteae, triangulares, crassae, distantes, plicis vel costis paucis interspersis, raro furcatae. Stipes 1-2 cm x 1 mm luteus, laevis vel indistincte striatus, solidus, modice tenax. Sporae 8-9 x 4-5 µm amyloideae; basidia 30-35 x 5-8 µm. Trama hymenophoralis irregularis, ex hyphis laxe intertextis usque 5 µm diam. sistens.

Typus: M. Hamilton in Stevenson 630.