Type: Lignicolous Fungi; Description: Basidiomata annual, compound, consisting of 3–10 overlapping pilei attached to a common base by lateral stalks, brittle at first, woody later; compound pilei may attain a large size, up to 500 mm wide; one very large specimen 800 mm wide has been recorded (Cunningham 1965). Pilei applanate, conchate or fan-like, 50–150 mm wide, 3–15 mm thick, young pilei exude a milky fluid when broken. Pileus surface finely velutinate to pruinose, radiately striate, orange yellow or fawn at first, drab fawn brown later. Pore surface even, with a sterile border 1–3 mm wide, honey yellow to pallid yellow brown, pores large, 1–3 per mm. Context white, 3–10 mm thick. Hyphal system dimitic. Basidiospores globose to subglobose, 6–8 μm in diameter (including amyloid spines), coarsely verruculose, hyaline.

Distribution: Northland, Auckland, Coromandel, Waikato, Bay of Plenty, Taranaki, Rangitikei, Wellington, Nelson, Buller, Fiordland, Marlborough, North Canterbury, Mid Canterbury, Otago Lakes, Central Otago.; 1st Record: Cunningham (1927: as Polyporus berkeleyi).

Significance: Causes a white butt rot, which is fairly common on Nothofagus spp.; Host(s): Dacrycarpus dacrydioides, Dacrydium cupressinum, Nothofagus fusca, N. menziesii, N. solandri var. cliffortioides, Podocarpus totara, Weinmannia racemosa.