FAGACEAE. Nothofagus cliffortioides: Wellington, Ohakune Track, Mt. Ruapehu, 1,000 m. type collection, P.D.D. herbarium, No. 6613; Horopito, National Park, 400 m.

Hymenophore biennial, probably perennial, adherent, firm, woody, effused forming irregular areas 6-14 x 5-10 cm, 2-10 mm thick. Hymenial surface irregular, nodose or crenulate, light or dark umber, when young fulvous, slightly glancing; margin thinning out, layers receding, to 2 mm wide, at first tan becoming black, thick and crenate, adherent. Pores in one or two layers, 5-6 per mm, 75-125 µm diameter, 1-5 mm deep in each layer; dissepiments 25-100 µm thick, equal, even. Context fulvous, 0.2-0.5 mm thick, of compact intertwined hyphae embedding crystals; skeletal hyphae to 4.5 µm diameter, walls 1 µm thick, yellow-brown, septate, sparsely branched; generative hyphae to 3 µm diameter, walls 0.2 µm, thick, hyaline, septate, branched. Hymenial layer to 15 µm deep, a dense palisade of setae, basidia and paraphyses. Setae ventricose, bases inflated, apices acuminate, 12-16 x 4-6 µm walls chestnut, abundant. Basidia oblong, 6-8 x 3.5-4 µm, collapsing, bearing 4 spores; sterigmata erect, slender, to 3 µm long. Paraphyses oblong or obovate, 5-6.5 x 3-3.5 µm. Spores oval, broadly oblong, subglobose or globose, 5-6 x 4-5 µm, walls smooth, yellow brown, 0.2 µm thick.

New Zealand.

Bark of fallen trunks, associated with a white rot.

Hymenophorum bienne probabiliter perenne, adnatum, ligneum, effusum, 6-14 x 5-10 cm, 2-10 mm crassum. Hymenii superficies inaequalis, umbrina, margine recedenti, ad 2 cm lato, alutaceo deinde nigro, crasso, crenato, adnato. Pori in 1 vel 2 stratis, 5-6 per mm, 75-125 µm diam., 1-5 mm alti; dissepimentis 25-100 µm crassis, aequis. Contextus fulvus, 0.2-0.5 mm crassus, hypharum solide intertextarum crystallis inclusis. Hyphae skeletales ad 4.5 µm diam., parietibus 1 µm crassis, brunneae, septatae, leviter ramosae. Hyphae generatoriae ad 3 µm diam., parietibus 0.2 µm, crassis, hyalinae, septatae, ramosae. Setae ventricosae, basibus inflatis, apicibus acuminatis, 12-16 x 4-6 µm. Basidia oblonga, 6-8 x 3.5-4 µm, 4 sporas in sterigmatis ad 3 µm longis gerentia. Paraphyses oblongi vel obovati, 5-6.5 x -3-3.5 µm. Sporae ovatae, late oblongae, subglobosae vel globosae, 5-6 x 4-5 µm, parietibus laevibus, brunneis, 0.2 µm crassis. On dead bark of Nothofagus eliffortioides, Mt. Ruapehu, Wellington, N.Z.

Separated from the other species present in the region possessing coloured spores, by the abundant small ventricose setae, pores with thin dissepiments, and fulvous context with freely septate skeletal hyphae. This last condition is unusual in species of the genus.