On bark. Waitaki (347).

Effusa, crassa, dura, perennis; hymenio irregulari-lobato, pallido, laevi, velutino ; margine subelevato ; setulis obclavatis, hyalinis, asperulis ( .04 x .015 mm.).

Resembling in appearance Stereum annosum, B. & Br., but with the. characteristic bodies on the hymenium, which are peculiar to Peniophora. Spores elliptic or reniform, .007 x .003 mm.

Beilschmiedia tarairi (A. Cunn.) Benth. & Hook. f. Auckland: Kaukapakapa, February, 1949, M. Dye. Beilschmiedia tawa (A. Cunn.) Hook. f. & Benth. Auckland: Lake Rotoiti, 1,200ft, June, 1952, G.H.C. Lake Rotoehu, 1,200ft, September, 1954, G.H.C. Brachyglottis repanda Forst. Auckland: Rangitoto Island; July, 1950, J.M. Dingley. Coprosma australis (A. Rich.) Robinson. Auckland: Ruatewhenua, Waitakeres, August, 1949, J.M. Dingley. Coprosma lucida Forst. Auckland: Coromandel Peninsula, October, 1954, J.M. Dingley. Corynocarpus laevigata Forst. Auckland: Piha, September, 1949, J.M. Dingley. Dacrydium kirkii F. Muell. Auckland: Waipoua Kauri Forest, September, 1949, J.M. Dingley. Dysoxylum spectabile (Forst. f.) Hook. f. Auckland: Wood's Bay, Titirangi, July, 1948, J.M. Dingley. Eucalyptus globulus Lab. Auckland: Silverdale, October, 1950, J.M. Dingley. Wellington: Waverley, 400ft, December, 1946, Mrs E.E. Chamberlain. Fuchsia excorticata L.f. Auckland: Moumoukai Valley, Hunua Range, July, 1946, J.M. Dingley; Mt. Pihanga, Turangi, 2,000ft, October, 1949, J.M. Dingley. Lake Rotoehu, 1,200ft, June, 1951, J.M. Dingley. Lake Okataina, 1,500ft, May, 1952, December, 1953, G.H.C. Knightia excelsa R. Br. Auckland: Upper Piha Valley, Waitakeres, September, 1949, J.M. Dingley. Leptospermum scoparium. Forst. Auckland: Titirangi, Waitakeres, 900ft, April, 1947, J.M. Dingley. Melicytus ramiflorus Forst. Auckland: Purewa Bush, August, 1948, J.M. Dingley. Metrosideros tomentosa A. Rich. Auckland: Piha, November, 1945, J.M. Dingley. Nothofagus truncata (Col.) Ckn. Auckland: tittle Barrier Island, 300ft, November, 1947, J.M. Dingley. Nothopanax arboreum (Forst. f.) Seem. Auckland: Mt. Tongariro, 2,500ft, January, 1947, G.H.C.; Kauri Glen, Northcote, August, 1951, J.M. Dingley. Olea lanceolata Hook. f. Auckland: Omahutu State Forest, 750ft, June, 1948, J.M. Dingley. Pseudopanax crassifolium (Sol.) Koch. Auckland: Te Whaiti, 1,500ft, June, 1951, J.M. Dingley. Schefflera digitata Forst. Westland: Weheka, 600ft, December, 1946, J.M. Dingley. Weinmannia racemosa L.f. Westland: Waiho, 600ft, November, 1946, J.M. Dingley.

Hymenophore perennial, ceraceous, adnate, tending to lift when old, effused forming irregular areas 8-15 x 3-5 cm, with scattered orbicular or linear outlying islands; surface exhibiting a wide range of colours--slate-grey, fawn, pallid livid, reddish-brown, ochre, and when old various shades of grey, brown, or plum--at first even, and where fertile finely velutinate, becoming deeply finely areolately creviced; margin abrupt, or thinning out, white, soon grey, adnate. Context appearing brown, 300-900 µ thick, showing numerous bands of alternating brown and tinted zones 40-80 µ deep, delimited by brown mucilage granules coating hyphae and cystidia in parallel bands, basal layer of parallel hyphae scantily developed, intermediate layer of scanty vertical hyphae; generative hyphae 2-2.5 µ diameter, walls 0.25 µ thick, naked, hyaline, branched, septate, without clamp connexions. Hymenial layer to 40 µ deep, a palisade of basidia, paraphyses and cystidia. Basidia clavate, projecting slightly, 16-20 x 4-5 µ, 4-spored; sterigmata slender, to 5 µ long. Paraphyses subclavate, 12-14 x 3-4 µ. Cystidia arranged in numerous overlapping layers in the hymenial and intermediate layers, narrowly conical, 30-50 x 10-16 µ, coarsely crystal coated, in the hymenial layer projecting to 20 µ. Spores elliptical, some suballantoid, 4.5-5.5 x 2-2.5 µ, walls smooth, hyaline, 0.1 µ thick.

TYPE LOCALITY. Waitaki, New Zealand. DISTRIBUTION. New Zealand.

HABITAT. Effused on bark and decorticated dead wood.

Collections listed match the type in Kew herbarium, ex "N.Z. Waitaki, No. 347". A second specimen in Kew herbarium, ex "Colenso, b. 288", was filed by Cooke under Corticium laeve Pers. ex Fr. The thick fructifications contain many cystidia arranged in numerous overlapping rows which under a lens appear to be composed of brown and hyaline or tinted zones. Under the microscope the brown zones are seen to be formed from parallel bands of brown mucilage granules coating cystidia, pedicels and hyphae. Surface colour varies appreciably, ranging from reddish-grey to reddish-brown or ochre with violaceous or purple tints.

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