Heterobasidion tasmanicum (Berk.) G. Cunn. 1965
Details
Nomenclature
Classification
Associations
Descriptions
Heterobasidion tasmanicum (Berk.) G. Cunn. 1965
CUNONIACEAE. Weinmannia racemosa: Auckland, Te Whaiti, 300 m. Otago, Doubtful Sound, 130 m; Woodlaw State Forest. ESCALLONIACEAE. Ixerba brexioides: Auckland, Mamaku Forest, 600 m. FAGACEAE: Nothofagus cliffortioides: Nelson, Lake Rotoiti, 700 m. Nothofagus fusca: Nelson, Marble Mountain, Maruia, 900 m; Westland, Orwell Creek, Ahaura. Nothofagus menziesii: Auckland, Mamaku Forest, 600 m. Wellington, Days Bay, 120 m. Nelson, Kakapo River, 300 m; Little Wanganui River, 270 m. Otago, Black Gully, Blue Mountains; Hollyford Valley, 140 m; Milford Sound, 200 m; Lake Te Anau, 120 m; Woodlaw State Forest; Alton Valley, Tuatapere, 120 m. LAURACEAE. Beilschmiedia tarairi: Auckland, Waipoua Kauri Forest, 130 m; Kaukapakapa. Beilschmiedia tawa: Auckland, Moumoukai Valley, Hunua Ranges, 300 m; Kauaeranga Valley, Thames, 70 m; Lake Rotoehu, 450 m; Earthquake Flat, Rotorua, 600 m. MELIACEAE. Dysoxylum spectabile: Auckland, Little Barrier Island. UNKNOWN HOSTS. Auckland, Waikaretu, 140 m; Waipoua Kauria Forest; Te Whaiti; Whakamarama. Wellington, Mt. Kapakapanui. Victoria, Cumberland Valley. Tasmania, National Park; Between Great Lake and Deloraine; National Park.
IN KEW HERBARIUM: Collections are the type ex "Tasmania, Archer", "Tasmania, L. Rodway" type of Polyporus suaderis Lloyd, and "N.Z. Colenso, b 369" type of Fomes cuneatus Lloyd.
Comb. nov.
Hymenophore perennial, solitary or imbricate, firm and woody, attached by a broad lateral base. Pilei usually effused-reflexed, sometimes ungulate or applanate, occasionally resupinate, 7-17 cm, 2-5 cm radius, 3-5 cm thick; pileus surface bay, becoming umber, concentrically sulcate and ridged, radiately fluted and/or rugulose, nodose; cortex to 0.5 mm thick, dark brown, shining, of compactly intertwined cemented hyphae; margin acute, entire, undulate, lighter in colour; hymenial surface ochre drying bay, with a sterile border 2-3 mm wide. Pores obscurely stratose, pallid ochre, 2-4 mm deep in each layer, 5-6 per mm, 100-200 µ diameter, dissepiments 50-150 µ thick, most 50-75 µ, apices expanded partly occluding pores, velutinate. Context 2-5 mm thick, ochre or isabelline, of compact intertwined hyphae; skeletal hyphae to 4 µ diameter, lumena almost capillary, sparsely branched, aseptate, staining; generative hyphae to 3 µ diameter, walls 0.2 µ thick, branched, septate. Hymenial layer to 20 µ deep, a close palisade of basidia and paraphyses soon collapsing and partly embedded in mucilage. Basidia clavate, 12-16 x 7-8 µ, bearing 4 spores; sterigmata erect, to 4 µ long. Paraphyses clavate, 8-12 x 5-6 µ. Spores elliptical, 7-10 x 4-5.5 µ, walls smooth, hyaline, 0.1 µ thick, staining slightly.
Australia, Tasmania, New Zealand.