On bark and wood. Otawa (335).

Dacrydium cupressinum Sol. Auckland: Waipoua Kauri Forest, January 1955, J.M.Dingley. Wellington: Mt. Hauhangatahi, 2,500ft, January 1954, S.D.Baker. Dysoxylum spectabile (Forst.f.) Hook.f. Auckland: Waikaretu, 400ft, October 1946, E.E.Chamberlain; Waipoua Kauri Forest, January 1955, J.M.Dingley. Leptospermum ericoides A.Rich. Auckland: Rereatukahia Reserve, Katikati, 300ft, October 1956, G.H.C. Oxylobium callystachys Benth. Auckland: Campbell's Bay, 150ft, November 1946, Mrs. E.E.Chamberlain. Podocarpus totara Don. Auckland: Hauhangaroa Range, Taupo, 2,800ft, March 1953, J.M.Dingley; Camel's Back, Coromandel Peninsula, 1,000ft, October 1954, J.M. Dingley. Rhipogonum scandens Forst. Auckland: Coromandel Peninsula, 1,000ft, August 1954, J.M.Dingley.

Hymenophore resupinate, annual, membranous, adnate, at first developing as numerous orbicular scattered colonies 2-5 mm diameter, merging to form elongate areas to 15 x 5 cm. Hymenial surface at first fulvous, or rhubarb, becoming cinnamon, even, at length irregularly areolately creviced; margin thinning out, fulvous, fibrillose, adnate. Context fulvous, 100-300 µ thick, composed of loosely intertwined hyphae, without a cortex; hyphal system monomitic; generative hyphae 4-5 µ diameter, walls 0.25 µ thick, pallid yellow brown, freely branched at a wide angle, corymbose beneath the hymenium, septate. Setal layer confined to the subhymenium, of one or two rows with occasional scattered setae in the context; setae somewhat sparse, projecting for the greater part of their length, aculeate, 65-95 x 6-8 µ, walls naked or coated with brown gelatinous granules, fragile, light reddish-brown, lumina narrow. Hymenial layer a dense palisade of basidia and paraphyses. Basidia subclavate, 14-18 x 5-6 µ, 4-spored; sterigmata arcuate, slender, to 5 µ long. Paraphyses subclavate, 6-9 x 4-5 µ, tinted below. Spores elliptical or obovate, apiculate, 5-6 x 2.5-3 µ, walls smooth, hyaline, 0.1 µ thick.

TYPE LOCALITY: Otawa, New Zealand. DISTRIBUTION: Australia, New Zealand.

HABITAT: Effused on bark of dead trunks and limbs associated with a pocket rot.

Collections match the type in Kew herbarium, ex "Colenso, N.Z." The species may be identified by the resupinate, fulvous or cinnamon fructifications, with long aculeate setae. The latter project for the greater part of their length, and are often partly coated with sheaths of gelatinous granules. Similar granules are present on occasional hyphae of the context. Context hyphae branch at a wide angle, are 1-5 µ diameter with thin walls, and beneath the hymenium become almost corymbose. They resemble the hyphae of H. cinnamomea, from which the species may be separated by the absence of strata and paraphysate hyphae, presence of mucilage granules, different setae and spores. In old specimens setae may be arranged in two or three obscure layers. Such plants may be confused with H. unicolor, from which the species is separated by the different arrangement of context hyphae, different spores and presence of a well developed intermediate tissue.

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