Beilschmiedia tawa (A. Cum.) Hook. f. & Benth. Wellington: Pohangina Reserve, 300ft., September, 1953, G.H.C. Coprosma australis (A. Rich.) Robinsorn. Wellington: Pohangina Reserve, 300ft., September, 1953, G.H.C. Cupressus macrocarpa, Hartw. Auckland: Campbell's Bay, October, 1947, Mrs. E.E. Chamberlain. Hedycarya arborea Forst. Auckland: Huia, March, 1953, J.M. Dingley. Macropiper excelsum (Forst. f.) Miq. Auckland: Manaia, Whaugarei Heads, October, 1947, J.M. Dingley; Piha, November, 1952, J.M. Dingley. Melicytuss ramifloris Forst. Auckland: Waitekaruru, Waitakeres, November, 1948, J.M. Dingley; Oratia, 600ft., December, 1952, J.M. Dingley. Metrosidems scandens Sol. Auckland: Taneatua Reserve, 50ft., May, 1952, G.H.C. Pinus radiata Don. Auckland: Campbell's Bay, November, 1952, E.E. Chamberlain. Pseudopanax crassifolium (Sol.) Koch. Wellington: Pohangina Reserve, 300ft., September, 1953, G.H.C. Rhipogonum scandens Forst. Auckland: Huia Filters, November, 1948, J.M. Dingley; Lake Okataina, 1,500ft., June, 1952, G.H.C., type collection, P.D.D. herbarium, No. 11505.

Hymenophore annual, adnate, membranous, effused, forming irregular linear areas to 15 x 4 cm.; surface white, becoming cream, pruinose, creviced when old; margin thinning out, arachnoid, white, adnate. Context white, 70-140 µ thick, composed of a narrow base of parallel hyphae and an intermediate layer of scanty upright hyphae branched more freely beneath the hymenium, with or without crystals; generative hyphae 3-4 µ diameter, wall 0.2 µ thick, hyaline, branched, septate, with clamp comlections, sometimes crystal coated^- near the base. Hymenial layer to 50 µ deep, of basidia, paraphyses and gloeocystidia. Basidia subclavate, subcylindrical, some constricted in the middle region, 16-24 x 4-5 µ, 4-spored, projecting; sterigmata slender, to 6 µ long. Paraphyses subclavate or cylindrical, shorter and narrower than the basidia. Gloeocystidia confined to the hymenial region, fusiform or ventricose with acute apices, some capitate, 20-32 x 4-5 µ, projecting to 15 µ, or not, wall 0.25 µ thick. Vesicles arising from hyphae of the intermediate layer on short lateral branchlets, pyriform or abruptly capitate, 4-5 µ diameter, smooth, staining deeply. Spores oval, a few subglobose, 4-6 x 3-3.5 µ, wall smooth, hyaline, 0.2 µ thick.

DISTRIBUTION. New Zealand.

HABITAT. Effused on bark of decaying branches.

Hymenophorum membranaceuin, adnatum, effusum; superficie alba deinde cremea, pruinosa, rimosa. Hyphae contextus fibulatae, 3-4 µ diam., prope basim crystalla interdum ferentes. Basidia 16-24 x 4-5 µ, 4 sporis. Gloeocystidia fusiformia vel ventricosa, aliquot capitata, 20-32 x 4-5 µ; vesiculis pyriformibus, 4-5 µ diam. Sporae ovatae, 4-6 x 3-3.5 µ, laeves, hyalinae.

Specific characters are the fusiform or ventricose small gloeocystidia, small oval spores, and lateral. pyriform vesicles. Gloeocystidia are confined to the hymenial region, apices being usually long-acuminate and projecting slightly, though some are capitate. Vesicles arise from lateral branchlets of the upright hyphae of the intermediate layer; they may be abundant, then appearing in whorls on the hyphae, or scanty when but one or two may be seen near the base. In old specimens tissues may collapse and become somewhat pseudoparenchymatous. Crystals may be present or absent, consequently they have not been included in the drawing.

Auckland: Huia Filters, November, 1948, J.M. Dingley; Lake Okataina, 1,500ft., June, 1952, G.H.C., type collection, P.D.D. herbarium, No. 11505.

Basidiome effused, membranaceous, slightly cracked. Hymenial surface even, cream-coloured; margin white, hypochnoid. Subicular hyphae hyaline, thin-walled, 2.5-4 µm wide, sometimes slightly sinuous, with clamps. Cystidia hyaline, thin-walled, typically acuminate, rarely capitate, basally inflated, sometimes with 1-3 constrictions (not apical), 1830 X 3.5-5 µm. Basidia suburniform, 18-25 X 4-5 µm. Spores hyaline, smooth, thin- to slightly thick-walled, broadly ellipsoid, 4.5-6 X 3.5-4.5 µm, not amyloid.

The species is close to Hyphoderma sambuci (Pers.) Rilich, a species which is intermediate between Grandinia and Hyphoderma and therefore sometimes placed in Lyomyces P. Karst.; the cultural characteristics of H. sambuci (Stalpers 1978) suggest Grandinia. Vesicles as described by Cunningham were not observed. The study of additional material is necessary before the status of the name can be established.