Polyporus (Hispidi) atrostrigosus, Cke.
Pileo dimidiato, carrnoso, postice effuso, olivaceo-filligineo; pilis strigosis adpressis virgato, margine acuto, contextu albo, tubulis elongatis, poris albis, minutis, rotundatis, dissepimentis tenuibus.

With somewhat the appearance of a Polystictus, but anodermeous. Pileus 1-2 inches or more diam., half an inch thick behind.

On stumps, etc. New Zealand. (Colenso 522.)

Unknown Hosts. Wellington. Track to Ohakune Hut, Mt. Ruapehu, 3,500 feet, April 1935, E.E.Chamberlain; Mangahao Dam, Tararua Ranges, 2,000 feet, June 1935; E.E.Chamberlain. Westland. Mt, Rangitaipo, 4,000 feet, Feb. 1928, G.H.C.

Hymenophore annual, solitary, laterally attached by a broad base, hard and woody, sometimes dimidiate and imbricate. Pileus triquetous or fan-shaped, to 4 cm. x 1.5-2.5 cm. x 5-8 mm.; surface black, densely coated with coarse imbricate strigose tufts of hyphae radiately arranged, vaguely sulcate, cuticle wanting, replaced by imbricate hyphae with rounded ends and fuscous walls; margin bluntly acuminate, lacerate, inturned; hymenial surface wood colour to smoky brown, irregular, dissepiments strongly toothed. Context white or cream, 2-5 mm. thick, of parallel hyphae radiately arranged, firm and woody; generative hyphae 5-7 µ thick, wall 1 µ, sparsely branched, septate, clamp connections abundant and large. Pores irregular, angular, to 5 mm. deep, wood colour in section, waxy, 100-200 µ diameter, or 4-6 per mm.; dissepiments 50-150 µ thick, of parallel hyphae cemented together, tapering to the apex where even. Basidial type clavate, basidia clavate, 10-12 x 3-4.5 µ. Spores allantoid, 5-5.5 x 1.5-2 µ, smooth, hyaline.

Growing solitary, sometimes imbricate, on decorticated rotting logs lying on the forest floor.

[Notes from Kew Type specimen, PRJ 2010] Kew images.