ARALIACEAE. Neopanax arboreum: Auckland, Mamaku Forest, 600 m. CONIFERAE. Pinus radiata: Auckland, Atiamuri, 400 m. CORIARIACEAE. Coriaria arborea: Auckland, Waiomu Valley, Thames, 35 m. Coriaria sarmentosa: Auckland, Kauaeranga Valley, Thames, 80 m. EPACRIDACEAE. Cyathodes fasciculata: Auckland, Cornwallis, 20 m; Mt. Te Aroha, 310 m; Rereatukahia Reserve, Katikati, 120 m. LABIATAE. Prostanthera lasiantha: Victoria, Tarra Valley. LAURACEAE. Beilschmiedia tawa: Wellington, Lake Papaitonga, 20 m. LILIACEAE. Rhipogonum scandens: Auckland, Warkworth Spit. MELIACEAE. Dysoxylum spectabile: Auckland, Waiatarua, Waitakere Ranges, 250 m. MIMOSACEAE. Albizzia lophantha: Auckland, Campbells Bay, 85 m. MYRTACEAE. Eucalyptus globukts: Auckland, Mt. Te Aroha, 300 m. Leptospermum scoparium: Auckland, Karekare, 250 m; Piha, 10 m. Metrosideros excelsa: Auckland, Whitianga-Coromandel Road, 350 m. PITTOSPORACEAE. Pittosporum eugenioides: Auckland, Titirangi, 250 m. Pittosporum tenuifolium: Auckland, Mountain Road, Henderson Valley, 200 m; Moumoukai Hill Road, Hunua Ranges, 350 m; Earthquake Flat, Rotorua, 500 m. Pittosporum umbellatum: Auckland, Little Barrier Island, 400 m. PROTEACEAE. Hakea acicularis: Auckland, Moturoa Island, Bay of Islands; Titirangi, 250 m. Knightia excelsa: Auckland, Hadfields Beach, Orewa. ROSACEAE. Rubus australis: Auckland, Waitakere Dam, 270 m. RUBIACEAE. Coprosma arborea: Auckland, Little Barrier Island. Coprosma robusta: Wellington, Whakapapa, Mt. Ruapehu, 950 m. SAXIFRAGACEAE. Ixerba brexioides: Auckland, Trounson Kauri Park.

Hymenochaete resupinate, annual or biennial, membranous, adherent, effused, at first in the form of small orbicular colonies to 5 mm diameter, merging to form linear areas 10-35 x 2-5 cm; hymenial surface when fresh India-red with a brighter periphery, becoming reddish-purple or testaceous, even or tuberculate, at length deeply irregularly creviced; margin thinning out, adherent, bright red with a narrow white or tinted fibrillose edge. Context testaceous or umber, 150-400 µm thick, of parallel hyphae loosely arranged, cortex narrow, with or without abhymenial hairs; skeletal hyphae 3-4 µm diameter, walls 0.5 µm thick, reddish-brown, freely branched, sometimes crystal encrusted; generative hyphae 2-2.5 µm diameter, walls 0.25 µm thick, hyaline. Setal layer 100-150 µm deep, in old specimens to 300 µm, of 3-5 irregular overlapping rows of setae and freely branched hyphae; setae narrowly fusiform, with acuminate apices, some projecting to 50 p, 60-95 x 8-12 µm, walls verruculose, reddish-brown, many tinted only, lumena at first broad, becoming narrow. Hymenial layer to 30 µm deep, a dense palisade of basidia, paraphyses, and paraphysate hyphae. Basidia subclavate, 16-22 x 3.5-4 µm, bearing 4 spores; sterigmata arcuate, slender, to 6 µm long. Paraphyses subclavate, 12-18 x 3.5-4 µm. Paraphysate hyphae projecting, dendriform, coloured or hyaline. Spores suballantoid, apiculate, 6-8 x 3-3.5 µm, walls smooth, hyaline, 0.1 µm thick.

DISTRIBUTION: Europe, Great Britain, Australia, Tasmania, New Zealand.

HABITAT: Bark and decorticated wood of dead branches and stems associated with a white rot.

Fresh specimens may be recognised readily by the closely adherent resupinate fructifications with the hymenial surface coloured scarlet or India-red, periphery bright red, and margin white and fibrillose. At first plants are small and orbicular; soon they merge to form irregular linear areas 5-10 cm long, sometimes extending to 35 cm. Sections through actively growing plants show them to be composed of a narrow setal layer of two or three overlapping rows of setae embedded among erect hyphae freely branched, and a context of parallel hyphae bordered by a coloured cortex of intertwined cemented hyphae which may or may not bear abhymenial hairs. In older specimens the setal layer may occupy the greater part of the context, and be composed of as many as 15 rows of setae irregularly distributed. Numerous dendriform paraphysate hyphae project above the hymenial surface especially in the periphery of actively growing plants. They may be coloured or hyaline, are formed from skeletal hyphae, and tend to disappear as plants age. In the context skeletal hyphae are scantily branched, but in the setal layer become freely so, almost dendriform. Spores, usually suballantoid, may be cylindrical with rounded ends.
Collections listed differ from typical European plants in several particulars. They are more deeply coloured, with purple shades rather than scarlet, margins are less brightly coloured, more closely attached to the substratum, and abhymenial hairs are usually scantily developed save in young specimens. In microfeatures they are similar, even to the dendriform paraphysate hyphae. The distribution given is based on examination of specimens in Kew herbarium and received from correspondents.

TYPE LOCALITY: Europe.

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