Pilei annual, scattered, waxy, fragile, 0.2-0.5 mm. diameter, attached by a narrow base, cupulate or as often pendent; exterior white, drying cream, tomentum of long, unbranched aseptate hyphae, tortuous, 3 µ diameter, finely crystal coated, tapering gradually to long-acuminate apices; margin inturned, lacerate when old; hymenial surface concave, even, pallid buff or cream. Context white, to 40 µ thick, base to 250 µ, of parallel hyphae radiately arranged; generative hyphae to 2.5 µ diameter, wall 0.25 µ thick, sparsely branched, septate. Hymenial layer to 35 µ deep, paraphyses subclavate. Basidia subclavate, 12-16 x 7-8 µ, 4-spored. Spores broadly fusiform or lemon-shaped, apiculate, 6-9 x 4.5-5.5 µ, smooth, hyaline.

DISTRIBUTION. New Zealand.

HABITAT. Scattered on bark of dead stems.

Pilei sparsi, cerosi, cupulati vel penduli, 0.2-0.5 mm. diam.; exteriore parte alba, tomento hyphis longis, sine ramis, aseptatis, tortuosis ad 3 µ diam., apicibus longo-acuminatis gradatim fastigatis, crystallis illinatis; margine inflecto, lacerato in maturitate. Contextus albus, ad 40 µ crassus, hyphis ad 2.5 µ diam., in radiis ordinatis. Paraphyses subclavati. Sporae late fusiformes vel citriformes, apiculatae, 6-9 x 4.5-5.5 µ, leves, hyalinae.

Tomentum hairs are long, unbranched, thin-walled and taper gradually to acuminate finely crystal-coated apices, the main stem being covered with coarse crystals.

Pseudopanax crassifolium (Sol.) Koch. Taranaki. Mt. Egmont, 2,700 feet; February, 1952. G.H.C.; type collection.