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 Hymenochaete fuliginosa
SynonymsHymenochaete fusca
Hymenochaetella fusca
Thelephora fuliginosa
BiostatusPresent in region - Indigenous. Non endemic
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 resupinate, annual,
membranous, adherent, at first appearing as numerous scattered orbicular
colonies 3-10 mm diameter, merging to form effused linear areas 4-7 x 1.5-2 cm;
hymenial surface sepia, umber, or reddish-brown, colliculose, at length deeply
irregularly creviced; margin thinning out, crenate, chestnut when young,
becoming concolorous, adherent. Context sepia or fuliginous, 150-250 µm thick,
of numerous rows of overlapping setae embedded among erect hyphae, with a
delicate layer of intertwined hyphae (sometimes wanting) on the abhymenial
surface; skeletal hyphae 3-3.5 µm diameter, walls 0.5 µm thick, yellow brown;
generative hyphae 2-2.5 µm diameter, walls 0.1 µm thick, hyaline. Setae subulate
with acute apices, some projecting to 50 µm, 65-90 x 7-9 µm, walls naked,
reddish-brown, lumena narrow. Hymenial layer to 35 µm deep, a close palisade of
basidia and paraphyses. Basidia subclavate, 14-18 x 3.5-4 µm, bearing 4 spores;
sterigmata slightly arcuate, slender, to 5 µm long. Paraphyses subclavate, 6-12
x 3.5-4 µm. Spores oval or obovate, a few laterally apiculate, 5-6.5 x 3.5-4 µm,
walls smooth, hyaline, 0.1 µm thick.
Habitat: HABITAT: Decorticated wood of
dead trunks associated with a white rot.
Distribution: DISTRIBUTION: Europe, North America, West
Indies, New Zealand.
Notes: In shape, size, and arrangement
of setae, size and shape of spores, and colour of the hymenial surface the
species resembles H. fuliginosa. It differs in that fructifications are
resupinate, and a cortex and well developed context are absent. The species may
be recognised by the acute, naked setae arranged in a setal layer of from three
to five overlapping rows occupying the region of the context, oval or obovate
spores, and usually small orbicular colonies with dark hymenial surface.
Collections agree with a specimen examined in Kew herbarium ex "Tyrol,
V. Litschauer", filed under the cover of H. fuliginosa (Lev.) Bres.
This combination was used by Burt (1918b, p. 365) but is untenable since it is
occupied by H. fuliginosa (Pers.) Lev., which, according to Bresadola,
is a different plant. Burt suggested the correct name for the species is H.
fusca, since he found Swedish specimens named by Karsten to agree with
H. fuliginosa (Lev.) Bres.
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