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Dermoloma hemisphaericum (G. Stev.) E. Horak 1971

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Threat status: Data deficient
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Dermoloma hemisphaericum (G. Stev.) E. Horak, New Zealand J. Bot. 9 429 (1971)
Dermoloma hemisphaericum (G. Stev.) E. Horak 1971

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Endemic
Present
New Zealand
Political Region

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E. Horak
G. Stev.
(G. Stev.) E. Horak
1971
429
ICN
NZ holotype
species
Dermoloma hemisphaericum

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hemisphaericum

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[GS] Pileus 1-1.5 cm. diam., greyish sepia, hemispherical, matt, cuticle drying paler and cracking into small scales; flesh thin, brownish. Gills decurrent by a tooth, deep, distant, whitish. Stipe 2.5 cm. x 1-3 mm., greyish sepia, tapering slightly to base, solid, surface smooth, striate, cracking to make a few small scales below. Spores 6-7 x 4um, faintly amyloid, oblong-ovoid, hyaline, thin-walled (Fig. 1/26, p. 10). HABITAT: in soil under Podocarpus totara, Woodside, Dunedin, 23.5.1953, Stevenson (type). [EH] Cuticle of smooth, thin-walled cells forming an hymeniderm, coloured with a brown, plasmatic pigment, clamp connections present. Spores oval, hyaline, amyloid, smooth, 5-6 x 3.5-4 um. Cheilo- and pleurocystidia none. [JAC] does indeed appear to a 'Dermoloma' like D. murinum except with distinctly amyloid spores. No cap/stem tissue amyloid or dextrinoid. I could not find the caulocystidia depicted by EH. 2 and 4 spored basidia but collapsing readily. No cystidia seen. I think there is a chance that SEM would show a very finely asperulate spore surface. spores length=4.7–5.8µm (µ=5.3, σ=0.29), width=3.0–4.3µm (µ=3.7, σ=0.34), Q=1.2–1.8µm (µ=1.43, σ=0.14), n=20. A species that is microscopically distinct and not collected recently. Rare.

Dermoloma hemisphaericum (G. Stev.) E. Horak 1971

Tricholoma hemisphaericum Stevenson (29 D) Fig. 13 = Dermoloma hemisphaericum (Stevenson) comb. nov. (Basionym: T. hemisphaericum Stevenson, Kew Bull. 19: 14, 1964)

Cuticle of smooth, thin-walled cells forming an hymeniderm, coloured with a brown, plasmatic pigment, clamp connections present. Spores oval, hyaline, amyloid, smooth, 5-6 X 3.5-4 µ. Cheilo- and pleurocystidia none.

Pileus 1-1.5 cm diam., greyish sepia, hemispherical, matt, cuticle drying paler and cracking into small scales; flesh thin, brownish. Gills decurrent by a tooth, deep, distant, whitish. Stipe 2-5 cm x 1-3 mm, greyish sepia, tapering slightly to base, solid, surface smooth, striate, cracking to make a few small scales below. Spores 6-7 x 4µm, faintly amyloid, oblong-ovoid, hyaline, thin-walled (Fig. 26).
In soil under Podocarpus totara, Woodside, Dunedin, 23-5-1953, Stevenson (type).
Pileus 1-1.5 cm diam., griseo-sepiino-brunneus, hemisphaericus, haud nitidus, cuticula siccitate pallidiore et in squamas parvas fissa; came tenui brunnescente. Lamellae ope denticuli decurrentes, altae, distantes, albidae. Stipes 2.5 cm x 1-3 mm, griseo-sepiino-brunneus, inferne leviter angustatus, solidus superficie laevi, striatus, inferne in squamas parvas paucas fissus. Sporae 6-7 x 4 µm, dilute amyloideae, oblongo-ovoideae, hyalinae, parietibus tenuibus.
Spores amyloid
Typus: Stevenson 903.

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Dermoloma hemisphaericum (G. Stev.) E. Horak 1971
Dermoloma hemisphaericum (G. Stev.) E. Horak (1971)
Dermoloma hemisphaericum (G. Stev.) E. Horak 1971
Dermoloma hemisphaericum (G. Stev.) E. Horak (1971)
Dermoloma hemisphaericum (G. Stev.) E. Horak 1971
Dermoloma hemisphaericum (G. Stev.) E. Horak (1971)
Dermoloma hemisphaericum (G. Stev.) E. Horak 1971
Dermoloma hemisphaericum (G. Stev.) E. Horak (1971)
Dermoloma hemisphaericum (G. Stev.) E. Horak 1971
Dermoloma hemisphaericum (G. Stev.) E. Horak (1971)
Dermoloma hemisphaericum (G. Stev.) E. Horak 1971
Dermoloma hemisphaericum (G. Stev.) E. Horak (1971)
Dermoloma hemisphaericum (G. Stev.) E. Horak 1971
Dermoloma hemisphaericum (G. Stev.) E. Horak 1971
Dermoloma hemisphaericum (G. Stev.) E. Horak (1971)
Tricholoma hemisphaericum G. Stev. (1964)
Dermoloma hemisphaericum (G. Stev.) E. Horak 1971

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Dermoloma hemisphaericum (G. Stev.) E. Horak 1971
[Not available]

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1cb1b1f2-36b9-11d5-9548-00d0592d548c
scientific name
Names_Fungi
1 January 2000
15 December 2003
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