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

Caption:

Details

Name scientific

Tricholomopsis ornaticeps (G. Stev.) E. Horak, New Zealand J. Bot. 9 442 (1971)

Preferred name

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

Taxonomy reference

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.

Biostatus

Origin

Occurrence

Georegion

Schema

Biostatus source

Comment

Endemic

Present

New Zealand

Political Region

Anon

Possibly also present in Australia but confirmation required.

Nomenclature

Authors

(G. Stev.) E. Horak

Original authors

G. Stev.

Combination authors

E. Horak

Publication place

Horak, E. 1971: A contribution towards the revision of the Agaricales (Fungi) from New Zealand. New Zealand Journal of Botany 9(3): 403-462.

Year published

1971

Publication page

442

Nomenclatural code

ICN

Basionym

Tricholoma ornaticeps G. Stev. 1964

Type locality

NZ holotype

Taxonomic rank

species

Canonical form

Tricholomopsis ornaticeps

Classification

Kingdom

Fungi

Phylum

Basidiomycota

Class

Agaricomycetes

Order

Agaricales

Family

Phyllotopsidaceae

Genus

Tricholomopsis

Species

ornaticeps

Synonyms

Tricholoma ornaticeps G. Stev. 1964

Associations

View full associations record

Association type

Associated organism

Association source

has host

Dacrydium

McKenzie, E.H.C.; Buchanan, P.K.; Johnston, P.R. (2000)

has host

Fuscospora fusca

PDD (1 records from [Not available].)

has host

Larix decidua Mill.

PDD (1 records from [Not available].)

has host

Nothofagus

PDD (3 records from [Not available].)

has host

Nothofagus fusca (Hook.f.) Oerst.

PDD (1 records from [Not available].)

has host

Nothofagus menziesii (Hook.f.) Oerst.

PDD (2 records from [Not available].)

has host

Pinaceae

PDD (1 records from [Not available].)

has host

Pinus

PDD (2 records from [Not available].)

has host

Pinus radiata D.Don

PDD (2 records from [Not available].)

Descriptions

Cooper, J.A. 2014-: Studies of New Zealand agaric type collections not deposited in PDD (unpublished).

Tricholoma ornaticeps G. Stev. 1964

Description

[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

Description

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

[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

Description

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.

Habitat

In mountain forest, Waiopehu, 20.4.19471 E-Cone in Stevenson (type).

Latin

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.

Notes

Spores inamyloid

Typification

Typus: E. Cone in Stevenson 237