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Tricholomopsis ornaticeps (G. Stev.) E. Horak 1971

Scientific name record
Names_Fungi record source
Is NZ relevant
This is the current name
This record has collections
This record has descriptions
This is indigenous
Threat status: Data deficient
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Tricholomopsis ornaticeps (G. Stev.) E. Horak, New Zealand J. Bot. 9 442 (1971)
Tricholomopsis ornaticeps (G. Stev.) E. Horak 1971
Segedin, B.P.; Pennycook, S.R. 2001: A nomenclatural checklist of agarics, boletes, and related secotioid and gasteromycetous fungi recorded from New Zealand. New Zealand Journal of Botany 39(2): 285-348.

Click to collapse Biostatus Info

Endemic
Present
New Zealand
Political Region
Anon
Possibly also present in Australia but confirmation required.

Click to collapse Nomenclature Info

E. Horak
G. Stev.
(G. Stev.) E. Horak
Horak, E. 1971: A contribution towards the revision of the Agaricales (Fungi) from New Zealand. New Zealand Journal of Botany 9(3): 403-462.
1971
442
ICN
Tricholoma ornaticeps G. Stev. 1964
NZ holotype
species
Tricholomopsis ornaticeps

Click to collapse Classification Info

Fungi
Basidiomycota
Agaricomycetes
Agaricales
Phyllotopsidaceae
Tricholomopsis
ornaticeps

Click to collapse Descriptions Info

Cooper, J.A. 2014-: Studies of New Zealand agaric type collections not deposited in PDD (unpublished).

Tricholoma ornaticeps G. Stev. 1964

[GS] Pileus 7-8 cm. diam., ochraceous to saffron yellow thickly dotted with small brown fibrillose scales, convex with down-rolled margin becoming broadly concave; flesh creamy yellow continuous with that of stipe. Gills sinuate, moderately distant, yellow staining brown at edges. Stipe 3 x 1 cm., creamy above, ochraceous at base, fibrillose striate. Spores 8-8.5 x 4.5~5um non-amyloid, ovoid, moderately thin-walled (Fig. 1/32, p. 10); copious white spore print. Cuticle of loosely woven hyphae about 5um diam.; scales are coremia-like tufts of parallel hyphae 3-5um, diam., with thickened walls which are rusty brown in transmitted light. HABITAT: in mountain forest, Waiopehu, 20.4.1947, E. Cone in Stevenson (type). [EH] Examination of the type material (together with additional collection made in New Zealand) justify this proposed combination. Spores oval to subcylindrical, neither amyloid nor dextrinoid, hyaline, smooth, 7-8.5 X 4—4.5 p.. Cheilocystidia conspicuous, thinwalled, with yellow plasmatic pigment in KOH, clamp connections present. Pleurocystidia none. [JAC] cheilos collapsed. Spores length=7.0–9.4µm (µ=8.2, σ=0.7), width=3.8–5.4µm (µ=4.4, σ=0.4), Q=1.6–2.2µm (µ=1.9, σ=0.2), n=16
Horak, E. 1971: A contribution towards the revision of the Agaricales (Fungi) from New Zealand. New Zealand Journal of Botany 9(3): 403-462.

Tricholomopsis ornaticeps (G. Stev.) E. Horak 1971

Tricholoma ornaticeps Stevenson (29 D) Fig. 19 = Tricholomopsis ornaticeps (Stevenson) comb. nov. (Basionym: T. ornaticeps Stevenson, Kew Bull. 19: 17, 1964)

Examination of the type material (together with additional collection made in New Zealand) justify this proposed combination. Spores oval to subcylindrical, neither amyloid nor dextrinoid, hyaline, smooth, 7-8.5 X 4-4.5 µ. Cheilocystidia conspicuous, thin-walled, with yellow plasmatic pigment in KOH, clamp connections present. Pleurocystidia none.

Johnston, P.R. 2010: Kew Type Specimens - images and notes from P.R. Johnston, 2010.

Tricholoma ornaticeps G. Stev. 1964

[Notes from Kew Type specimen, PRJ 2010] Kew images.
Stevenson, G. 1964: The Agaricales of New Zealand: V. Kew Bulletin 19(1): 1-59.

Tricholoma ornaticeps G. Stev. 1964

Pileus 7-8 cm diam., ochraceous to saffron yellow thickly dotted with small brown fibrillose scales, convex with down-rolled margin becoming broadly concave; flesh creamy yellow continuous with that of stipe. Gills sinuate, moderately distant, yellow staining brown at edges. Stipe 3 x 1 cm, creamy above, ochraceous at base, fibrillose striate. Spores 8-8.5 x 4.5-5 µm, non-amyloid, ovoid, moderately thin-walled (Fig. 32); copious white spore print. Cuticle of loosely woven hyphae about 5 µm diam.; scales are coremia-like tufts of parallel hyphae 3-5 µm diam., with thickened walls which are rusty brown in transmitted light.
In mountain forest, Waiopehu, 20.4.19471 E-Cone in Stevenson (type).
Pileus 7-8 cm diam., ochraceus usque croceus, squamulis parvis brunneis fibrillosis dense sparsus, convexus, margine deflexo-revoluto, deinde late concavus; came cremeo-lutea cum stipite continua. Lamellae sinuosae, modice distantes, luteae, marginibus brunneo-tinctis. Stipes 3 x 1 cm, superne cremeus, basi ochraceus, fibrilloso-striatus. Sporae 8-8.5 x 4.5-5 µm haud amyloideae, ovoideae, parietibus modice crassis, sporarum cumulo copioso albo. Cuticula ex hyphis laxe intertextis circiter 5 µm diam. sistens; squamae e crinibus coremiiformibus hypharum parallelarum 3-5 µm diam. sistentes, parietibus incrassatis luce transmissa ferrugineo-brunneis.
Spores inamyloid
Typus: E. Cone in Stevenson 237

Click to collapse Taxonomic concepts Info

Tricholoma ornaticeps G. Stev. 1964
Tricholoma ornaticeps G. Stev.
Cooper, J.A. (2014-)
Tricholoma ornaticeps G. Stev. 1964
Tricholoma ornaticeps G. Stev. 1964
Johnston, P.R. (2010)
Tricholoma ornaticeps G. Stev. 1964
Tricholoma ornaticeps G. Stev. (1964)
Segedin, B.P.; Pennycook, S.R. (2001)
Tricholomopsis ornaticeps (G. Stev.) E. Horak 1971
Tricholoma ornaticeps G. Stev. 1964
Tricholoma ornaticeps G. Stev. (1964)
Stevenson, G. (1964)
Tricholomopsis ornaticeps (G. Stev.) E. Horak 1971
Tricholomopsis ornaticeps (G. Stev.) E. Horak (1971)
Hitchmough, R. (compiler) (2002)
Tricholomopsis ornaticeps (G. Stev.) E. Horak 1971
Tricholomopsis ornaticeps (G. Stev.) E. Horak (1971)
Hood, I.A. (1992)
Tricholomopsis ornaticeps (G. Stev.) E. Horak 1971
Tricholomopsis ornaticeps (G. Stev.) E. Horak (1971)
Horak, E. (1971)
Tricholomopsis ornaticeps (G. Stev.) E. Horak 1971
Tricholomopsis ornaticeps (G. Stev.) E. Horak (1971)
McKenzie, E.H.C.; Buchanan, P.K.; Johnston, P.R. (2000)
Tricholomopsis ornaticeps (G. Stev.) E. Horak 1971
Tricholomopsis ornaticeps (G. Stev.) E. Horak (1971)
Pennycook, S.R.; Galloway, D.J. (2004)
Tricholomopsis ornaticeps (G. Stev.) E. Horak 1971
Tricholomopsis ornaticeps (G. Stev.) E. Horak (1971)
Segedin, B.P.; Pennycook, S.R. (2001)
Tricholomopsis ornaticeps (G. Stev.) E. Horak 1971

Click to collapse Collections Info

Tricholoma ornaticeps G. Stev. 1964
New Zealand
Wellington
1 Link to an external page
Tricholomopsis ornaticeps (G. Stev.) E. Horak 1971
New Zealand
Auckland
1 Link to an external page
Tricholomopsis ornaticeps (G. Stev.) E. Horak 1971
New Zealand
Marlborough
2 Link to an external page
Tricholomopsis ornaticeps (G. Stev.) E. Horak 1971
New Zealand
Nelson
7 Link to an external page
Tricholomopsis ornaticeps (G. Stev.) E. Horak 1971
New Zealand
Northland
1 Link to an external page
Tricholomopsis ornaticeps (G. Stev.) E. Horak 1971
New Zealand
Otago Lakes
1 Link to an external page
Tricholomopsis ornaticeps (G. Stev.) E. Horak 1971
New Zealand
Taranaki
1 Link to an external page
Tricholomopsis ornaticeps (G. Stev.) E. Horak 1971
New Zealand
Taupo
2 Link to an external page
Tricholomopsis ornaticeps (G. Stev.) E. Horak 1971
New Zealand
Waikato
1 Link to an external page
Tricholomopsis ornaticeps (G. Stev.) E. Horak 1971
New Zealand
Wellington
3 Link to an external page

Click to collapse Metadata Info

1cb1b9ad-36b9-11d5-9548-00d0592d548c
scientific name
Names_Fungi
1 January 2000
28 July 2025
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