FAGACEAE. Nothofagus cliffortioides: Wellington, Kaimanawa Ranges, 700-950 m; Waihohonu River, Mt. Tongariro, 1,200 m; Whakapapa, Mt. Ruapehu, 1,150 m. Nothofagus fusca: Auckland, Lake Waikaremoana, 450 m. Hawke's Bay, Upper Mohaka River, 750 m; Ahimanawa Ranges, 850 m. Nelson, Staircase Creek, Reefton, 700 m; Murchison, 170 m; Orwell Creek, Ahaura; Totara Flat. Nothofagus menziesii: Auckland, Lake Waikareiti Track, 800 m. Hawke's Bay, Upper Mohaka River, 700 m; Poronui, 750 m. Wellington, Kaimanawa Ranges, 950 m. Nothofagus solandri: Canterbury, Arthur's Pass, 850 m. UNKNOWN HOSTS. New South Wales, Milson Island; Kurrajong Mountains.

Hymenophore pileate, coriaceous, annual, sometimes reviving a second season. Pilei at first orbicular and attached by a narrow umbo with reflexed margins, soon merged laterally to form effused-reflexed linear areas to 12 x 2 cm, sometimes resupinate when loosely attached, reflexed portions with a radius of 1-2 cm, extending laterally for the length of the fructification; pileus surface at first fulvous, remaining so or becoming ferruginous, weathering to grey, banded with concentric zones of different shades of brown, sometimes radiately sulcate, tomentose, hairs often arranged in tufts; pileus margin fibrillose, fulvous, entire or torn; hymenial surface at first fulvous, becoming ferruginous or date-brown, sometimes colliculose, at length deeply creviced in small radiate areas; hymenial margin thinning out, fibrillose, fulvous. Context fulvous, 150-200 µm thick, of closely compacted parallel hyphae; cortex absent; abhymenial hairs arising from context hyphae; skeletal hyphae 3-4 µm diameter, walls 0.5 µm thick, golden yellow; generative hyphae 1.5-2 µm diameter, walls 0.2 µm thick, hyaline. Setal layer to 120 µm deep, composed of 1-3 rows of overlapping setae; setae aculeate, often twisted on their axes, with acute apices, a few domeL shaped, some projecting to 80 µm, 80-110 x 7-10 µm, walls naked, deep reddish-brown, lumena narrow. Hymenial layer to 30 µm deep, a close palisade of basidia, paraphyses, and coloured ends of skeletal hyphae. Basidia subclavate, 20-24 x 4-5 µm, bearing 4 spores; sterigmata arcuate, slender, to 5 µm long. Paraphyses subclavate, 8-14 x 3.5-4.5 µm. Spores broadly elliptical, 5.5-6 x 4-5 µm, walls smooth, hyaline, 0.2 µm thick.

DISTRIBUTION: Java, Malaya, Japan, Ceylon, Australia, New Zealand.

HABITAT: Crowded on bark of dead twigs, branches and saplings associated with a white rot.

In microfeatures collections match an authentic Leveille specimen from Java in Kew herbarium. They differ in that pilei are not so well developed and the hymenium becomes deeply creviced when old. The species has been placed under Section II, which contains plants with a well developed context but without a cortex.
Plants at first are orbicular and either resupinate or sessile-umbonate with upturned margins. They soon merge to form linear areas with broad resupinate bases and narrowly reflexed margins. The pileus surface is tomentose, hairs becoming compacted into tufts, and arranged in concentric zones of various shades of brown. Pilei are both concentrically and radiately sulcate, these conditions being reflected in the hymenial surface. At first bright fulvous, colour of the pileus surface changes to ferruginous with fulvous margins, and weathers some shade of grey. Pilei are soft and papery, and may be folded without fracture. The hymenium is at first fulvous, soon becoming date-brown and in New Zealand collections fissured so deeply that the fulvous context becomes exposed. Crevices are often arranged in radiate series not unlike those of some resupinate collections of H. obesa. Setae are narrowly aculeate and naked, some being twisted on their axes. A few are short with rounded domed apices (Fig. 161), similar setae being present in the Leveille specimen.

TYPE LOCALITY: Java.