Corticium tuberculatum P. Karst. 1896
Details
Corticium tuberculatum P. Karst., Hedwigia 35 45 (1896)
Nomenclature
P. Karst.
P. Karst.
1896
45
ICN
Corticium tuberculatum P. Karst. 1896
Finland
species
Corticium tuberculatum
Classification
Descriptions
Corticium tuberculatum P. Karst. 1896
CORNACEAE. Griselinia lucida: Wellington, Mt. Ruapehu, 1,100 m. FAGACEAE. Nothofagus cliffortioides: Wellington, Chateau, Mt. Ruapehu, 1,000 m. MYRTACEAE. Eucalyptus spp.: New South Wales, Neutral Bay. South Australia, Mt. Lofty. RUBIACEAE. Coprosma linanifolia: Hawke's Bay, Upper Mohaka River, 700 m.
Hymenophore annual, ceraceous, adherent, effused forming linear areas to 12 x 5 cm; hymenial surface cream, pallid alutaceous, or ochre, becoming deeply areolately creviced; then appearing tuberculate; margin thinning out, concolorous, byssold, adherent. Context white, 100-400 µm thick, basal layer narrow, of loosely arranged mainly parallel hyphae, intermediate layer of erect hyphae more densely compacted in the subhymenium, embedding masses of crystals which may be arranged in layers; generative hyphae 3.5-4 µm diameter, walls 0.2 µm thick, encrusted, without clamp connections. Hymenial layer to 40 µm deep, a close palisade of basidia and paraphyses. Basidia subclavate, 14-32 x 4-6 µm, bearing 2-4 spores; sterigmata slender, to 8 µm long. Paraphyses cylindrical or subclavate, 14-28 x 4-5 µm. Spores oval, ovate, or broadly elliptical, 4-5-6 x 3.5-4 µm, walls smooth, hyaline, 0.2 µm thick.
DISTRIBUTION: Europe, Great Britain, Australia, New Zealand.
HABITAT: Effused on bark or decorticated dead branches.
Collections listed agree with a specimen of C. tuberculatum examined in Kew herbarium, differing mainly in the brighter colour of the surface and, particularly, in the masses of crystals present in the context. In specimens from Griselinia lucida crystals are confined to the basal part of the context, whereas in those from Nothofagus cliffortioides they extend to the hymenial layer, lying between and partly encrusting basidia and paraphyses. Australian collections bear only a few crystals, hyphae of the context being encrusted with mucilage granules. Margins of crevices in old specimens often lift slightly and give to plants an odontoid appearance. When plants are actively growing the surface is even although deeply creviced.
TYPE LOCALITY: Finland.
Taxonomic concepts
Corticium tuberculatum P. Karst. 1896
Corticium tuberculatum P. Karst. (1896)
Corticium tuberculatum P. Karst. 1896
Corticium tuberculatum P. Karst. (1896)
Global name resources
Metadata
1cb1cfe5-36b9-11d5-9548-00d0592d548c
scientific name
Names_Fungi
31 May 1996
16 April 2002