Polyporus scruposus var. isidioides
BiostatusPresent in region - Indigenous. Non endemic
Article: Gadgil, P.D. (in association with Dick, M.A.; Hood, I.A.; Pennycook, S.R.) (2005). Fungi on trees and shrubs in New Zealand. Fungi of New Zealand. Ngā Harore o Aotearoa 4: xi + 437 p. Hong Kong: Fungal Diversity Press.
Description: Type: Lignicolous Fungi; Description: Basidiomata perennial, woody, attached by a broad lateral base. Pilei applanate, conchate or effused-reflexed, 30–110 mm wide, 5–20 mm thick. Pileus surface coarsely velutinate or strigose, radiately striate, often concentrically zoned with bands of brown hairs of different shades, chestnut brown to cinnamon brown, margin even or crenate, sometimes slightly inturned. Pore surface uneven, reddish brown; pores 5–6 per mm. Context yellow brown, 7–11 mm thick. Hyphal system dimitic. Setae subulate, 20–40 × 5–6 μm, chestnut brown. Basidiospores elliptical to obovate, 4–6 × 2–3 μm, smooth, hyaline.
Distribution: Distribution: Northland, Auckland, Coromandel, Waikato, Bay of Plenty, Taranaki, Taupo, Wellington, Hawkes Bay, Westland, Southland.; 1st Record: Berkeley (1855: as Polyporus scruposus).
Article: Dingley, J.M. (1969). Records of plant diseases in New Zealand. New Zealand Department of Scientific and Industrial Research, Bulletin 192: 298 p. Wellington:.
Notes: Cunningham (1948f) and Gilmour (1966a) described it as causing white rot of dead
trunks and logs of a number of native trees. As it is common on mature trees in
indigenous forest it is of economic importance.