CONIFERAE. Agathis austrahs: Auckland, Little Barrier Island. Cupressus macrocarpa: Auckland, Orewa, 35 m. Podocarpus totara: Waipoua Kauri Forest, 200 m. MYRTACEAE. Leptospermum scoparium: Auckland, Piha, 130 m. Metrosideros robusta: Auckland, Waiatarua, Waitakere Ranges, 300 m. Wellington, Totara Reserve, Pohangina Valley, 150 m.

Hymenophore annual, membranous, loosely attached, effused forming numerous irregular colonies 1-6 x 1-3 cm; hymenial surface at first white, becoming yellowish, tan, or pallid buff, even, at length sparsely creviced; margin thinning out, 3-5 mm. wide, white, byssoid, often with radiating mycelial strands, loosely attached. Context white, 300-700 µm thick, basal layer of a few loosely arranged parallel hyphae, intermediate layer of loosely intertwined hyphae becoming more compact in the subhymenium; generative hyphae 4-5 µm diameter, commonly 3-4 µm, walls 0.2 µm thick, finely crystal encrusted, branched at a wide angle, with conspicuous clamp connections. Hymenial layer to 40 µm deep, a loose palisade of basidia and paraphyses, and sometimes paraphysate hyphae. Basidia subclavate, 12-24 x 4-6 µm, bearing 4 spores; sterigmata slender, to 6 µm long. Paraphyses subclavate when 8-16 x 3-4 µm, or pyriform and with long-acuminate projecting apices. Paraphysate hyphae cylindrical, some sparsely branched, finely encrusted. Spores elliptical, obovate, or oval, some apiculate, 6-8 x 4-5 µm, walls delicately and irregularly asperulate, hyaline or tinted, to 0.75 µm thick; often adhering in fours.

DISTRIBUTION: North America, New Zealand.

HABITAT: Effused on bark of dead branches.

Hyphae branch at a wide angle, and septa are widely spaced save in hyphae of the subhymenium. Bridging hyphae are not uncommon. Spores often adhere in fours; in most collections they are obovate or elliptical, in others they may be oval and more distinctly verruculose. Walls of some spores are hyaline, others faintly tinted brown, as may be seen in sections mounted in lactic acid, and may stain with aniline blue. Many are delicately somewhat irregularly asperulate, others bear delicate markings confined to the apical region. The species differs from the European C. alboochraceum Bres. in that spore markings are much finer and context hyphae are not ampullate.

TYPE LOCALITY: Alabama, U.S.A.