UNKNOWN HOST. New South Wales, near Sydney.

Hymenophore annual or biennial, ceraceous, adherent, effused forming irregular areas to 12 x 5 cm; hymenial surface cream or pallid ochre, pruinose, not creviced; margin thinning out, white, fibrillose, adherent. Context white, 200-400 µm thick, basal layer a narrow zone of parallel hyphae closely compacted, intermediate layer mainly of skeletal hyphae embedding gloeocystidia; skeletal hyphae freely branched, 2-3 µm diameter, walls 0.5 µm thick, aseptate, staining deeply; generative hyphae 3-4 µm diameter, walls 0.1 µm thick, not staining, without clamp connections. Gloeocystidia scattered, obclavate, cylindrical, or subfusiform, some projecting slightly, arising in the context, 45-80 x 7-10 µm, contents at first of yellow oil globules, becoming vitreous. Hymenial layer to 65 µm deep, an obscure palisade of basidia, paraphyses, and gloeocystidia. Basidia irregular in shape, cylindric-flexuous or subclavate, soon collapsing, 30-48 x 5-6 µm, bearing 4 spores; sterigmata slightly erect, slender, to 5 µm long. Paraphyses scattered, subclavate or cylindrical, 24-36 x 4-5 µm. Spores obovate, oval, or pip-shaped, often flattened on one side, with lateral apiculi, 7-9.5 x 5-7 µm, walls smooth, hyaline, 0.1 µm thick, nonamyloid.

DISTRIBUTION: Europe, North America, Australia.

HABITAT: Effused on bark or decorticated dead wood.

Skeletal hyphae form the bulk of the intermediate layer and are thick-walled, aseptate, and stain deeply. Among them lie the thin-walled, freely septate generative hyphae, which are without clamp connections and do not stain with aniline blue. Gloeocystidia arise from generative hyphae among the skeletal hyphae of the intermediate layer. At first conspicuous because of the yellow contents, in old specimens contents become glassy, when gloeocystidia are often difficult to detect. Occasional branches of skeletal hyphae pass through the hymenium to appear above the surface, as simple or finely branched paraphysate hyphae. Basidia, at first somewhat irregular, soon become elongated, flexuous, and project slightly. Spores vary in size and shape, most being somewhat pip-shaped with lateral apiculi. The collection listed agrees with Swedish specimens in the herbarium. The species differs from the related S. galactinum in the larger spores and absence of clamp connections; and from S. ochroleucum by the smaller spores and narrower basidia.

TYPE LOCALITY: Europe.