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 Corticium permodicum
Article: Cunningham, G.H. (1963). The Thelephoraceae of Australia and New Zealand. New Zealand Department of Scientific and Industrial Research, Bulletin 145: 359 p. Wellington:.
Description: Hymenophore annual, pelliculose, adherent, effused
forming irregular linear areas to 20 x 5 cm, with a few linear outlying islands;
hymenial surface white or bluish-white when fresh, even, not creviced; margin
thinning out, arachnoid, white, adherent. Context 30-50 p. thick, white, basal
layer a narrow zone of parallel hyphae, collapsed and inconspicuous when old,
intermediate layer wanting; generative hyphae 3-3.5 µm diameter,
walls 0.1 µm thick, naked, without clamp connections. Hymenial layer to 25 µm
deep, a close palisade of basidia and paraphyses. Basidia obovate or subclavate,
10-15 x 6-7.5 µm, bearing 2-4 spores; sterigmata slightly arcuate, stout, to 7
µm long. Paraphyses subclavate or obovate, 8-11 x 5-6 µm. Spores pyriform, or
obovate with prominent apiculi, 6-7.5 x 4.5-5.5 µm, walls smooth, hyaline, 0.1
µm thick; tending to adhere in fours.
Habitat: HABITAT: Effused on bark of dead stems.
Distribution: DISTRIBUTION: North America, New
Zealand.
Notes: Specimens closely resemble the type
description and figure of C. permodicum. Diagnostic features are the
pyriform spores, which are more or less subglobose with long and conspicuous,
persistent apiculi, context reduced to a narrow basal layer of parallel cemented
and partly gelatinised hyphae, and absence of clamp connections. Fructifications
are thin and inconspicuous, bluish-white, somewhat resembling hoar frost when
fresh.
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