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 Sistotrema coroniferum
SynonymsTrechispora coronifera
Gloeocystidium coroniferum
BiostatusAbsent from region
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 10 x 2 cm; hymenial surface bluish-white, resembling
hoar frost when fresh, even or granulose, not creviced; margin thinning out,
arachnoid, white, adherent. Context white, to 40 µm thick, a basal layer of
parallel cemented hyphae, without an intermediate layer; generative hyphae 3.5-4
µm, diameter, to 7 µm in a few inflated basal hyphae, walls 0.1 µm thick, naked,
with clamp connections. Gloeocystidia scattered, projecting for the greater part
of their length, cylindrical or tapering slightly, 28-80 x 5-8 µm, walls
hyaline; 0.25 µm thick, contents yellow when fresh. Hymenial layer to 30 µm
deep, of scattered basidia, paraphyses, and gloeocystidia. Basidia when immature
obovate or oblong, when mature each with inflated and long narrow body, urniform
at apices, 10-16 x 4.5-6 µm, bearing 4-6 (8) spores; sterigmata arcuate;
slender, to 5 µm long. Paraphyses scanty, cylindrical, 8-12 x 4-5 µm. Spores
suballantold or obovate, 4.5-5 x 2.5-3 µm, walls smooth, hyaline, 0.1 µm thick.
Habitat: HABITAT: Effused on bark of dead branches.
Distribution: DISTRIBUTION: Europe; Great Britain, North America, New Zealand.
Notes: From delicate species of Corticium,
Trechispora coronifera may be separated by the thin context of irregular
hyphae, small projecting gloeocystidia and urniform basidia, bearing four or
six, sometimes eight spores. Gloeocystidia vary appreciably in size and shape,
contain yellow contents when, fresh, and soon collapse. An intermediate layer is
wanting, the hymenial layer, arising directly from the basal layer of compacted,
freely septate hyphae.
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