ACERACEAE. Acer pseudoplatanus: Auckland, Mt. Albert, 85 m. CONIFERAE. Pinus radiata: Auckland, Mt. Maunganui, coast. CORIARIACEAE. Coriaria sarmentosa: Auckland, Little Barrier Island. CORYNOCARPACEAE. Corynocarpus laevigatas: Auckland, Glen Esk Valley, Piha, 250 m; Cornwall Park, 75 m; Huia, 30 m. JUGLANDIACEAE. Juglans regia: Hawke's Bay; Twyford, 10 m. LAURACEAE. Beilschmiedia tarairi: Auckland, Parahaki, Whangarei, 70 m; Little Barrier Island. Beilschmiedia tawa: Auckland, Claudelands Reserve, Hamilton, 35 m; Lake Rotoehu, 400 m. Wellington, Lake Papaitonga, 20 m. MALVACEAE. Hoheria glabrata: Canterbury, Governors Bush, Hermitage, 850 m. Hoheria populnea: Auckland, Piha, 35 m; University Grounds. Plagianthus betulinus: Kitchener Park, Feilding, 30 m. MELIACEAE. Dysoxylum spectabile: Auckland, Little Barrier Island; Orakei Bush, 30 m; Huia, 70 m. MIMOSACEAE. Albizzia lophantha: Auckland, Oratia, 30 m. MORACEAE. Ficus macrophylla: New South Wales, Sydney Domain. MYOPORACEAE. Myoporum laetum: Auckland, Hillcrest, Northcote, 35 m. MYRSINACEAE. Myrsine australis: Auckland, Purewa Bush, 30 m. PALMAS. Rhopalostylis sapida: Auckland, Huia, 35 m. PAPILIONACEAE. Sophora macrophylla: Auckland, Boulder Bay, Rangitoto Island; Whekatahi Stream, Piha; Purewa Bush, 50 m. PITTOSPORACEAE. Pittosporum crassifolium: Auckland, Piha, 250 m. POLYGONACEAE. Muehlenbeckia australis: Auckland, Waikowhai, 30 m. RUBIACEAE. Coprosma repens: Auckland, South-west King Island. Coprosma crenulata: Auckland, Three Kings, 55 m. Coprosma robusta: Auckland, Little Barrier Island; Karekare, Waitakere Ranges, 250 m. RUTACEAE. Citrus aurantifolia: Auckland, Henderson, 20 m. Citrus limonum: Auckland, Claudelands, Hamilton, 35 m. Melicope ternata: Auckland, North-east King Island. SALICACEAE. Salix fragilis: Auckland, Mt. Albert, 55 m. VIOLACEAE. Melicytus ramiflorus: Auckland, Little Barrier Island; Te Moehau, Coromandel Peninsula, 200 m. UNKNOWN HOSTS. Queensland, Tully. New South Wales, Sydney, National Park, Bulli Pass, Lisarow, Katoomba.

Hymenophore annual or biennial, coriaceous, widely effused with reflexed margins, or resupinate, at first small and orbicular, finally forming irregular areas 7-12 x 1-4 cm. Pilei narrowly applanate, often reduced to mere upturned margins, or wanting; pileus surface straw colour or pallid ochre, clothed with appressed hairs often imbricately arranged, or radiately striate; hymenial surface cream to pallid ochre, sometimes buff, velutinate, at length deeply areolately creviced, or finely tuberculate; margin when resupinate thinning out, fibrillose, concolorous, adherent. Context cream, isabelline, or bay, 0.2-1 mm thick, of parallel hyphae densely arranged, tinted towards the base, bordered by a coloured cortex and abhymenial hairs; skeletal hyphae 4-5 µm diameter, lumena capillary, naked; generative hyphae 2.5-4 µm diameter, walls 0.2 µm thick, without clamp connections. Metuloids arranged in a zone of erect hyphae, each within a locule, some projecting to 90 µm, narrowly conical, or lanceolate, with short, stout, often tinted pedicels, 80-180 x 16-26 µm, coarsely encrusted throughout. Hymenial layer to 70 µm deep, a close palisade of basidia, paraphyses, and metuloids. Basidia subclavate, 40-64 x 8-12 µm, bearing 4 spores; sterigmata arcuate, slender, to 8 µm long. Paraphyses subclavate, 35-56 x 6-10 µm. Spores elliptical with rounded ends, 9-14 x 7-9 µm, walls smooth, hyaline, 0.5 µm thick.

DISTRIBUTION: Cosmopolitan.

HABITAT: Effused on bark or decorticated dead wood.

Separated by the dimitic hyphal system, skeletal hyphae with walls so thickened that lumena are capillary, large metuloids with short and stout pedicels, large basidia and spores. Metuloids may be arranged in one irregular row in the hymenial layer, or more often in several obscure zones within tissues of the hymenial layer and context. They vary appreciably in shape and size, shape and length of the stout pedicels, and size of crystals. Some basal metuloids may be naked, or bear only a few scattered crystals. In thin specimens the context is composed of parallel hyphae as in species of Stereum; in thick forms a deep subhymenium is developed in which metuloids are embedded in lacunae.
The species bears a long list of synonyms, although its specific name has seldom been in doubt. Usually placed under Peniophora, on account of the metuloids, or Stereum because of the pileate fructifications, it has also been used as the type species of Thwaitesiella, Lloydella, and Lopharia. Lloyd admitted that his Stereum purpurascens was merely a coloured form; and Talbot showed that S. caperatum Lloyd and S. turgidum Lloyd were likewise synonyms. S. subporiferum Berk., the 'type' of which came from the Chatham Islands, ex "Travers, No. 7" is also based on the species.

TYPE LOCALITY: Pennsylvania, U.S.A.