Holotype (PDD 27084); Isotype (Herb. HK. ZT 69/138): 'Track to Mt. Anglem, Xmas Village, Stewart Island, N.Z.; leg. Horak, 15.III.1969'.

Pileus 6-18 mm diam., hemispherical when young becoming convex or campanulate, deep orange or apricot, glabrous, dry, slightly striated, not hygrophanous. Lamellae broadly adnate or decurrent with short tooth, light, apricot when young later turning deep orange, moderately distant, frequently anastomosing, gill edge concolorous, even. Stipe 10-25 x 1-2 mm, cylindric, equal, coloured like pileus, apex pruinate, towards the base with appressed fibrils, fistulose, dry, single: Context orange. Taste and odor not distinctive. Chemical reactions: on pileus: KOH, HCl and NH3 - negative. Spores 45 x 2-2.5 µm (5-6 x 3-3.5 µm borne on 2-spored basidia), ovoid or ellipsoid, smooth, inamyloid. Basidia 32-35 x 4-5 µm, 4 and 2-spored. Cystidia absent. Cuticle a cutis of repent, cylindric hyphae (4-8 µm diam.), membrane not gelatinized but encrusted with pigment. Clamp connections numerous.

On soil amongst mosses and litter of Weinmannia, Metrosideros, Senecio, Olearia, etc. New Zealand.

Pileo 6-18 mm lato, ex hemisphaerico convexo vel campanulato, aurantiaco, glabro, sicco, substriato. Lamellis adnatis vel subdecurrentibus aurantiacis. Stipite 10-25 x 1-2 mm, cylindrico, pileo concolori vel pallidiori, sicco, apicaliter pruinoso basim versus minute fibrilloso. Sporis 4-5 x 2-2.5 µm, ovoideis. Cystidiis nullis. Epicute ex hyphis repentibus, pigmento incrustatis cutem formantibus, septis fibulatis. Ad terram in silvis. Novazelandia.

In habit, this species resembles H. aurantius Murrill ss. Stevenson (1962: 382). However, the two taxa are easily distinguished by virtue of the size and shape of their spores (see also C delicatus Hk.).

Holotypus (PDD 27084) Mt. Anglem, Stewart Island, N.Z.; leg. Horak, 15.III.1969'.