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Page number:103 
Description type:Non-original description 
Description:Dendrochaete russiceps (Berkeley & Broome) comb. nov. Fig. 20 Polyporus russiceps Berk. & Br., J. Linn. Soc. 14 : 48, 1875. Polyporus cinnamomeo-squamulosus Henn., in Engl. hot. Jber. 30 : 43, 1901. Favolus samoensis Lloyd, Mycol. Notes 69 : 1194, 1923.; Asterochaete russiceps (Berk. & Br.) Bond. & Sing., Ann. mycol. 39 : 58, 1941. Asterochaete cinnamomeo-squamulosa (Henn.) Bond. & Sing., Ann. mycol. 39 : 58, 1941.
Hymenophore annual, usually solitary, coriaceous-corky, attached by a narrow stem-like base. Pilei conchate or flabelliform, 3-10 cm wide, 3-7 cm radius, 2-7 mm thick; pileus surface ochraceous to black, polished beneath the deciduous tomentose cinnamon layer, which forms a covering to 150 µm deep and is composed of densely compacted dendriform stellate or irregular setae to 50 µm long, variously branched, walls brown; margin acute, inturned, even, seldom crenate, sometimes ciliate; hymenial surface ochre, drying reddish-brown, umber, or fuscous, slightly concave. Pores alutaceous or ochre in section, round or slightly angular, 2-3 per mm, 200-300 µm diameter, to 1 mm deep; dissepiments 50-200 µm thick, commonly about 100 µm, equal, apices delicately velutinate with setae of the type present in the pileus surface layer. Context cream, becoming alutaceous or wood colour, to 3 mm thick, of densely intertwined hyphae; binding hyphae 5-6 µm diameter, walls 1-3 µm thick, bovista type, branched freely, branches tapering, aseptate, sometimes tinted; generative hyphae 3-4 µm diameter, walls 0.2 µm thick, branched, septate, with clamp connections. Hymenial layer to 15 µm deep, a scanty palisade of basidia, paraphyses, and setae, soon collapsing. Setae dendriform, similar to those of the pileus surface. Basidia clavate, 10-15 x 6-9 µm, bearing 4 spores; sterigmata erect, to 4 µm long. Paraphyses clavate, 8-12 x 6-7 µm. Spores cylindrical or narrowly elliptical, 8-9 x 3-3.5 µm, walls smooth, hyaline, 0.1 µm thick.
TYPE LOCALITY: Peradeniya, Ceylon.
DISTRIBUTION: Ceylon, Africa, Sarawak, Samoa, Australia, New Zealand.
HABITAT: Bark and decorticated fallen branches and trunks, associated with a white laminar rot. ARALIACEAE. Neopanax arboreum: Auckland, Mountain Road, Henderson Valley, 200 m. Wellington, Days Bay, 120 m. ARAUCARIACEAE. Agathis australis: Auckland, Waipoua Kauri Forest, 160 m. COMPOSITAE. Brachyglottis repanda: Waiomu Valley, Thames, 60 m; Mt. Te Aroha, 330 m. LAURACEAE. Bedschmiedia tarairi: Auckland, Waipoua Kauri Forest, 160 m. Beilschmiedia tawa: Auckland, Little Barrier Island, 30 m; Western Hills, Whangarei, 140 m; Cosseys Creek, Hunua Ranges, 180 m. MELIACEAE. Dysoxylum spectabile: Auckland, Te Moehau, Coromandel Peninsula, 200 m. PODOCARPACEAE. Dacrydium cupressinum: Auckland, Spragues Hill, Waitakere Ranges, 150 m. RUBIACEAE. Coprosma robusta: Auckland, Swanson Filters. UNKNOWN HOSTS. Auckland, Waipoua Kauri Forest; Rangitoto Island, 280 m; Kauri Park, Waitakere Ranges, 250 m; Oratia Stream, 140 m; Bethells, coast; Waikaretu, 140 m; Colville Range, Coromandel Peninsula. New South Wales, Wauchope; Wingham Brush (referred by Lloyd Nos. 293, 298 to Polyporus megaloporus). Queensland, Brisbane, Bailey (herb. Kew under µm. megaloporus).
Recognised readily by the unusual type of surface hairs, stellate or dendriform setae of dissepiments, dimitic hyphal system with bovista type binding hyphae, some tinted yellow, moderately sized Dores. and narrowly elliptical snores. The pileus surface is clothed with a dense fugacious laver
of coloured dendriform or stellate setae arranged in a zone to 150 µm deep; similar setae are present in the hymenial layer and form the velutinate covering of apices of dissepiments. The surface hairs are fugacious, soon flaking away in patches exposing the even pileus surface, which is usually alutaceous, without a cortex, and in old specimens may become discoloured, almost black. The hymenial layer is formed when plants are reaching maturity and rapidly disappears so that basidia may be found only in and near margins of those which were actively growing at the time of collecting. Plants from the region agree with the type of D. russiceps from Ceylon in Kew herbarium. Polyporus cinnamomeo-squamulosus from Cameroons and Favolus samoensis from Samoa are based on specimens of the same species. Similar setae are present on the surface and sometimes dissepiments of Polyporus megaloporus Mont. and Favolus princeps Berk. The former differs in that setae are few and scattered on the pileus surface, and do not form the dense layer of Dendrochaete russiceps.
Bondarzew & Singer (1941, p. 58) erected Asterochaete to contain the related Polyporus megaloporus; but as Donk (1960, µm. 188) has shown, the name is untenable because of the earlier homonym Asterochaete Nees, 1834, a genus of the Cyperaceae.
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