Hymenophore to 15 x 10 cm., 5-16 mm. thick, with white pore mouths, turning brown where bruised and drying smoky brown or fuscous; surface undulating, of groups of pores overlapping others, leaving vertical sections of pores exposed to 10 mm., when longitudinally striate; margin obscure, abrupt, 1-2 mm. wide, dingy white or isabelline. Pores not in strata, obliquely inserted, to 15 mm. deep, irregularly angular, polygonal, or elliptical, 0.2-1 mm. diameter, or 0.2-0.3 x 1 mm., dingy white when fresh, drying wood colour with fuscous margins; dissepiments 50-200 µ thick, commonly 75-100 µ, equal, of woven gelatinized mainly parallel hyphae, margins even, not velutinate. Context to 1 mm. thick, isabelline, of densely woven hyphae; skeletal hyphx 3-4 µ thick, lumen 2 µ, hyaline, aseptate, unbranched, staining strongly; generative hyphae 1.5-2 µ thick, delicate walled, septate, branched, clamp connections present, scanty. Basidial type clavate, basidia appearing cruciate owing to adhering spores, clavate, 8-10 x 4-5 µ, sterigmata to 10 µ long, embedded in a gelatinous matrix, forming a dense palisade. Spores elliptical, ovate, or slightly kidney shaped, 4.5-5 x 2.5-3 µ, hyaline, smooth, cemented together at the apices of the basidia.

New Zealand.

Specimens were found upon the interior of a rotting stump, growing obliquely, and extending down the bark on the lower surface. The elongated pores occur in overlapping groups and give to the surface of the hymenophore an undulate appearance. When fresh pore mouths are white--contrasting with the isabelline context--but soon change on drying or where bruised to a dingy wood colour. Basidia are embedded in copious mucilage which tends to hold spores upon their apices in groups of four, so that basidia appear cruciate when viewed from above. Skeletal hyphae are often coated with crystals.