A small, brittle, white‑rot polypore of the Irpicaceae, known only from New Zealand and distinguished by its spathulate basidiomes, acute margin, merulioid basidia, and allantoid spores.

General form: Annual, solitary or caespitose (clusters from a common base). Attachment: Usually laterally attached by a short stem 3-4 x 2-4 mm. Sometimes arising from a stem-like extension of the upper surface. Occasionally dimidiate, attached by a broad base. Texture: Firm but brittle. Colour: Entirely white when fresh, drying cream.
Pileus: Shape: Shell-shaped, spathulate, bell-shaped, or occasionally applanate. Size: 10-35 mm long x 15-20 mm wide x 1-2 mm thick. Surface: Smooth, dull, sometimes obscurely sulcate. Cuticle: 30-40 µm thick, compacted hyphae with upturned ends forming a tight palisade. Margin: Thin, acute, interned; entire when young, becoming crenate or toothed with age.
Hymenophore Surface: Plane or concave, even, white to drying cream. Pores: Round or angular, 100-150 µm diameter (≈ 6-7 per mm). Depth: 0.2-0.5 mm. White in section.