Merulius niveus Fr. 1828
Details
Merulius niveus Fr. 1828
Nomenclature
Fr.
Fr.
1828
59
ICN
Merulius niveus Fr. 1828
species
Merulius niveus
Classification
Descriptions
Merulius niveus Fr. 1828
CORNACEAE. Griselinia lucida: Westland, Weheka, 200 m. FAGACEAE. Nothofagus fusca: Wellington, York Bay, 120 m, part of type collection, P.D.D. herbarium, No. 1218. LAURACEAE. Beilschmiedia tawa: Auckland, Alfriston, 20 m.
Hymenophore annual, resupinate, adherent, cartilaginous, fragile, effused forming irregular areas to 10 x 3 cm; hymenial surface at first orange or reddish-brown, becoming pallid vinaceous, porosereticulate, pores 1-2 mm wide, to 0.1 mm deep; margin arachnoid; irregular, fawn or light brown, adherent. Context white or more often dingy wood brown, 60-250 µm thick, of loosely intertwined hyphae partly encrusted with granules of orange or yellow mucilage; generative hyphae to xxx µm diameter, walls 0.5 µm thick, hyaline, without clamp connections. Gloeocystidia lying beneath folds of the hymenial layer, clavate or cylindrical, 24-30 x 4-6 µm, or scattered among hyphae of the context when 30-55 x 5-8 µm, contents orange. Hymenial layer to 50 µm deep, a close palisade of basidia and paraphyses. Basidia cylindrical or subclavate, 12-16 x 4-5 µm, bearing 4 spores; sterigmata erect, slender, to 4 µm long. Paraphyses cylindrical, 8-12 x 3.5-4 µm. Spores allantoid, 4.5-6 x 1-1.5 µm, walls smooth, hyaline, 0.1 µm thick.
DISTRIBUTION: New Zealand.
HABITAT: Bark of dead fallen branches.
Plants are resupinate and may be recognised by the orange colour of the surface of fresh specimens turning vinaceous when dried, small allantoid spores and thin-walled delicate context hyphae without clamp connections. An orange pigment layer lies beneath the readily separable hymenium, colour being derived from orange mucilage granules encrusting hyphae of the subhymenium. Gloeocystidia arise in folds of the hymenium, and are also embedded among hyphae of the subhymenium and upper part of the context, being larger in the latter region. They are readily overlooked unless sections are stained with aniline blue.
TYPE LOCALITY: York Bay, Wellington, New Zealand.
Taxonomic concepts
Global name resources
Collections
Metadata
1cb19353-36b9-11d5-9548-00d0592d548c
scientific name
Names_Fungi
1 January 2001
3 May 2013