COMPOSITAE. Brachyglottis repanda: Auckland, Waiomu Valley, Thames, 70 m. CORNACEAE. Griselinia lucida: Wellington, Mt. Tongariro, 1,100m. CORYNOCARPACEAE. Corynocarpus laevigatus: Auckland, Woods Bay, Titirangi. CUNONIACEAE. Weinmannia racemosa: Auckland, Mamaku Forest, 600 m. Otago, Doubtful Sound. FAGACEAE. Nothofagus menziesii: Auckland, Mamaku Forest, 600 m. Otago, Woodlaw State Forest, 220 m. LAURACEAE. Beilschmiedia tawa: Auckland, Kohukohunui Ridge, Hunua Ranges, 300 m; Mamaku Forest, 600 m. MYRTACEAE. Metrosideros robusta: Auckland, Ngaiotonga Ranges, Bay of Islands, 270 m; Moumoukai Valley, Hunua Ranges, 300 m. Taranaki, Mt. Egmont, 770 m. PODOCARPACEAE. Dacrydium cupressinum: Auckland, Cascade Kauri Park, Waitakere Ranges, 250 m. Otago, Ulva Islet, Stewart Island.UNKNOWN HOSTS. Auckland. Mangatawhiri Ridge, Hunua Ranges, 300 m; Whitianga-Coromandel Road, 70 m. Wellington, Tokomaru River, Tararua Ranges, 200 m. New South Wales, Sydney. Tasmania, National Park. IN KEW HERBARIUM: Only one collection is from the region, ex "Q., Daintree River", filed under Poria hyposclera.

Hymenophore perennial, adherent, ceraceous, firm and cartilaginous when dry, sometimes stratose, effused forming linear areas 3-6 x 1-2 cm, 1-6 mm thick. Hymenial surface white, cream or flesh colour, becoming wood colour or smoky brown when dry, not creviced, even or undulate; margin white, floccose, crenate, thinning out and receding in perennial plants, lifting when dry and becoming inturned exposing the ventral surface which is vaguely zoned, somewhat polished and bay brown. Pores stratose or not, 6-9 per mm, 60-150 µm diameter, to 2 mm deep in each layer; dissepiments about 50 µm thick, but reaching 150 µm, equal or slightly tapering, margins tufted. Context dingy white, wood colour when old, 0.3-1 mm thick, of densely intertwined hyphae almost sclerotiold and embedded in mucilage; generative hyphae 4-6 µm diameter, walls 0.25 µm thick in the context, to 1.5 µm in the dissepiments, branched, septate, with small rare clamp connections. Hymenial layer to 20 µm deep, a loose palisade of basidia, paraphyses, and paraphysate hyphae. Basidia clavate, subclavate, or elliptical, 10-14 x 5-6 µm, bearing 4 spores; sterigmata arcuate, to 5 µm long. Paraphyses subclavate or cylindrical, 8-12 x 4-5 µm. Paraphysate hyphae filiform with slightly inflated or acute apices, to 30 µm long. Spores globose, rarely subglobose, 3.5-5 µm diameter, walls smooth, hyaline, 0.2 µm thick.

DISTRIBUTION: Europe, North America, Australia, Tasmania, New Zealand.

HABITAT: Decayed decorticated fallen branches or bark of fallen branches, associated with a pocket rot.

Among species with a monomitic hyphal system the species may be recognised by the usually stratose hymenophore which when dry is firm and cartilaginous, minute pores, thin dissepiments, and globose small spores. Hyphae of the context are densely intertwined, almost sclerotioid, and firmly embedded in mucilage. The margin lifts when dry and becomes inturned, exposing the ventral surface which is striated and often polished, simulating a pileus and leading many workers to consider the species as a "Polyporus" or "Polystictus". Clamp connections are present, but as they are rare and usually confined to the subhymenium, many authors have stated that they are absent.
The accepted name for the species in Europe is Poria undata, since the undulate surface of typical specimens was shown by Persoon in his original figure. Donk placed the species under Podoporia with the specific name P. vitrea (Fr.) Donk; but, as Bresadola showed (1903, p. 78), Polyporus vitreits Fr. as a name for the species is untenable.

TYPE LOCALITY: Europe.

Gilmour (1966a) stated that this fungus causes a white pocket heart rot, which is common, particularly in mature trees of Nothofagus menziesii. It is of minor economic importance.