Dysoxylum spectabile (Forst.f.) Hook.f. Auckland. Riverhead, June 1947, G.B.Rawlings, type collection. Metrosideros robusta A.Cunn. Auckland. Sprague's Hill, Henderson, 500 feet, Aug. 1947, Joan Dingley. Metrosideros tomentosa A.Rich. Auckland. Kawau Tsland, 50 feet, Dec. 1947, J.D.Atkinson. Nothofagus menziesii (Hook.f.) Oerst. Southland. Woodlaw State Forest, Nov. 1946, G.B.Rawlings.

Hymenophore perennial, solitary, dimidiate, firm and woody. Pileus ungulate, to 23 cm. x 12 cm. x 8 cm.; surface concentrically sulcate and ridged, at first fawn or ferruginous, becoming umber or black near the base, cuticle to 0.5 mm. thick, black, hard, brittle, of woven hyphae cemented into a layer which tends to crack and flake away save peripherally; margin obtuse, even, tomentose; hymenial surface plane or slightly convex, ferruginous, sterile border 1-3 mm. wide, tomentose, fulvous, dissepiments not toothed. Context 1-5 mm. thick, chestnut-brown or fulvous, hyphae mostly radiately arranged; skeletal hyphae 3-3.5 µ thick, lumen 1 µ, chestnut-brown, sparsely branched, aseptate; generative hyphae 2-2.5 µ thick, delicate walled, branched, septate, hyaline. Pores round, obscurely stratose, each layer 2-5 mm. deep, ferruginous in section, 100-150 µ diameter, or 5-7 per mm.; dissepiments 75-150 µ thick, equal, apex finely velutinate. Sets mostly uncinate, a few subulate. chestnut-brown, 16-36 x 6-8 µ, wall to 2 µ. Basidia clavate, 8-12 x 4-6 µ. Spores globose, subglobose, or broadly obovate, 3.5-5 x :3.5-4 µ, smooth, hyaline.

DISTRIBUTION : New Zealand.

HABITAT : Growing solitary upon bark of standing dead trees, associated with a brown pocket-rot.

Hymenophorum solum, dimidiatum; pileus ungulatus, ad 23 cm. x 12 cm. x 8 cm.; superficies concentricaliter sulcata, hinnulea vel ferruginea, demum umbrina vel nigra, cuticula ad 0.5 mm. crassa, nigra, inveterata, fragilis; superficies hymenialis plana vel leviter convexa, ferruginea. Contextus 1-5 mm. crassus, castaneus vel fulvus; hyphae skeletales 3-3.5 µ crassae, castaneae, sparse brachiatae, aseptatae; hyphae generativae 2-2.5 µ crassa brachiatae, septatae, hyalinae. Pori rotundati, coriomquisque 2-5 mm., in altitudinem, ferrugineo, 5-7 per mm.; dissepimenta 75-150 µ crassa. Seta plerumque uncinatae, castaneae, 16-36 x 6-8 µ. Sporae globosae, subglolbosae, vel late obovataae, 3.5-5 x 3.5-4 µ, leves, hyalinae.

Separated from F. hamatus, which the species resembles in several features, including hooked setae, by the ungulate pileus and presence of a definite cuticle. Most setae are hooked, with apices turned towards the hymenium, or at least at right-angles; a few are subulate.

Dysoxylum spectabile (Forst.f.) Hook.f. Auckland. Riverhead, June 1947, G.B.Rawlings, type collection.