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Collybiopsis rimutaka (G. Stev.) E. Horak, New Zealand J. Bot. 9 450 (1971)
Collybiopsis rimutaka (G. Stev.) E. Horak 1971

Click to collapse Biostatus Info

Endemic
Present
New Zealand
Political Region
Anon

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
450
ICN
Collybia rimutaka G. Stev. 1964
NZ holotype
species
Collybiopsis rimutaka

Click to collapse Classification Info

Fungi
Basidiomycota
Agaricomycetes
Agaricales
Omphalotaceae
Collybiopsis
rimutaka

Click to collapse Descriptions Info

Cooper, J.A. 2014-: Studies of New Zealand agaric type collections not deposited in PDD (unpublished).

Collybia rimutaka G. Stev. 1964

[GS] Pileus 2-2.5 cm. diam., pale cinnamon, striate at margin, darker at centre, smooth, hygrophanous, plano-convex, broadly umbonate; flesh concolorous. Gills free, cream, shallow, crowded. Stipe 4 cm, x 3-4 mm., cinnamon, smooth, hollow, more or less equal. Spores 6 x • 3um., non-amyloid, thinrwalled, hyaline (Fig. 1/15, p. 10). Cuticle of woven hyphae HABITAT : in litter under mixed forest, Gollan's Valley, 2.1 10. 1948, Stevenson. [EH] Spores 4.5-6.5 X 2.5-3 um, neither amyloid nor dextrinoid, hyaline, smooth. Cuticle of irregular, broom-like cells, membranes encrusted with brown pigment, dextrinoid in Melzer's solution, clamp connections numerous. Cheilocystidia present. A very common species growing in all habitats in New Zealand. [JAC] No dextrinoid pigment on cap hyphae observed (but some brown encrusting pigment). No broom cells observed. The cap is not a broom/ramealis structure but more dryophila-like, ie.an interlocked matrix of hyphae with modified terminals but no multiple smaller lateral extensions. As I suspected this is identical to material I have tagged 'pororari'. spores length=4.9–6.5µm (µ=5.6, σ=0.37), width=2.6–3.5µm (µ=3.0, σ=0.25), Q=1.6–2.2µm (µ=1.89, σ=0.15), n=20. Note the spores are small. The swollen stem base in Stevenson's image is suggestive of a Rhodocollybia but tere are no dextrinoid spores present on cap/stem tissue, and the spores are small for NZ look-alike Rhodocollybia spp. A good Gymnopus. I believe this species was misidentified by mata et al as G. readii.
Horak, E. 1971: A contribution towards the revision of the Agaricales (Fungi) from New Zealand. New Zealand Journal of Botany 9(3): 403-462.

Collybiopsis rimutaka (G. Stev.) E. Horak 1971

Collybia rimutaka Stevenson (29 D) Fig. 23 = Collybiopsis rimutaka (Stevenson) comb. nov. (Basionym: C. rimutaka Stevenson, Kew Bull. 19: 8. 1964)

Spores 4.5-6.5 X 2.5-3 µ, neither amyloid nor dextrinoid, hyaline, smooth. Cuticle of irregular, broom-like cells, membranes encrusted with brown pigment, dextrinoid in Melzer's solution, clamp connections numerous. Cheilocystidia present. A very common species growing in all habitats in New Zealand.

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

Collybia rimutaka 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.

Collybia rimutaka G. Stev. 1964

Pileus 2-2.5 cm diam., pale cinnamon, striate at margin, darker at centre, smooth, hygrophanous, plano-convex, broadly umbonate; flesh concolorous. Gills free, cream, shallow, crowded. Stipe 4 cm x 3-4 mm, cinnamon, smooth, hollow, more or less equal. Spores 6 x 3 µm, non-amyloid, thin-walled, hyaline (Fig. 15). Cuticle of woven hyphae.
In litter under mixed forest, Gollan's Valley, 2.10.1048, Stevenson (type).
Pileus 2-2.5 cm diam., pallide cinnamomeus, margine striato, medio intensius coloratus, laevis, hygrophanus, plano-convexus, late umbonatus; carne concolori. Lamellae liberae, cremeae, humiles, confertae. Stipes 4 cm x 3-4 mm, cinnamomeus, laevis, cavus, plus minus aequalis. Sporae 6 x 3 µm haud amyloideae, parietibus tenuibus, hyalinae. Cuticula ex hyphis intertextis sistens.
Typus: Stevenson 455

Click to collapse Taxonomic concepts Info

Collybia rimutaka G. Stev. 1964
Collybia rimutaka G. Stev. 1964
Anon.
Collybia rimutaka G. Stev. 1964
Collybia rimutaka G. Stev.
Cooper, J.A. (2014-)
Collybia rimutaka G. Stev. 1964
Collybia rimutaka G. Stev. (1964)
Horak, E. (1971)
Collybia rimutaka G. Stev. 1964
Collybia rimutaka G. Stev. 1964
Johnston, P.R. (2010)
Collybia rimutaka G. Stev. 1964
Collybia rimutaka G. Stev. (1964)
Ridley, G.S.; Taylor, G.M. (1997)
Collybia rimutaka G. Stev. 1964
Collybia rimutaka G. Stev. (1964)
Segedin, B.P.; Pennycook, S.R. (2001)
Collybiopsis rimutaka (G. Stev.) E. Horak 1971
Collybia rimutaka G. Stev. 1964
Collybia rimutaka G. Stev. (1964)
Stevenson, G. (1964)
Collybiopsis rimutaka (G. Stev.) E. Horak 1971
Collybiopsis rimutaka (G. Stev.) E. Horak (1971)
Horak, E. (1971)
Collybiopsis rimutaka (G. Stev.) E. Horak 1971
Collybiopsis rimutaka (G. Stev.) E. Horak (1971)
Pennycook, S.R. (2004)
Collybiopsis rimutaka (G. Stev.) E. Horak 1971
Collybiopsis rimutaka (G. Stev.) E. Horak (1971)
Pennycook, S.R.; Galloway, D.J. (2004)
Collybiopsis rimutaka (G. Stev.) E. Horak 1971
Collybiopsis rimutaka (G. Stev.) E. Horak (1971)
Segedin, B.P. (1987)
Collybiopsis rimutaka (G. Stev.) E. Horak 1971
Collybiopsis rimutaka (G. Stev.) E. Horak (1971)
Segedin, B.P.; Pennycook, S.R. (2001)
Collybiopsis rimutaka (G. Stev.) E. Horak 1971

Click to collapse Collections Info

Collybia rimutaka G. Stev. 1964
New Zealand
1 Link to an external page
Collybia rimutaka G. Stev. 1964
New Zealand
Auckland
1 Link to an external page
Collybia rimutaka G. Stev. 1964
New Zealand
Dunedin
1 Link to an external page
Collybia rimutaka G. Stev. 1964
New Zealand
Fiordland
1 Link to an external page
Collybia rimutaka G. Stev. 1964
New Zealand
Nelson
2 Link to an external page
Collybia rimutaka G. Stev. 1964
New Zealand
Wairarapa
1 Link to an external page
Collybia rimutaka G. Stev. 1964
New Zealand
Wellington
1 Link to an external page
Collybiopsis rimutaka (G. Stev.) E. Horak 1971
New Zealand
Auckland
6 Link to an external page
Collybiopsis rimutaka (G. Stev.) E. Horak 1971
New Zealand
Buller
2 Link to an external page
Collybiopsis rimutaka (G. Stev.) E. Horak 1971
New Zealand
Fiordland
4 Link to an external page
Collybiopsis rimutaka (G. Stev.) E. Horak 1971
New Zealand
Kaikoura
1 Link to an external page
Collybiopsis rimutaka (G. Stev.) E. Horak 1971
New Zealand
Mid Canterbury
2 Link to an external page
Collybiopsis rimutaka (G. Stev.) E. Horak 1971
New Zealand
North Canterbury
3 Link to an external page
Collybiopsis rimutaka (G. Stev.) E. Horak 1971
New Zealand
Northland
1 Link to an external page
Collybiopsis rimutaka (G. Stev.) E. Horak 1971
New Zealand
Otago Lakes
1 Link to an external page
Collybiopsis rimutaka (G. Stev.) E. Horak 1971
New Zealand
Taupo
5 Link to an external page
Collybiopsis rimutaka (G. Stev.) E. Horak 1971
New Zealand
Wairarapa
2 Link to an external page
Gymnopus rimutaka (G. Stev.) J.A. Cooper comb. ined. 2015
New Zealand
Nelson
1 Link to an external page

Click to collapse Notes Info

taxonomic status
Collybiospsis potentially remains a good genus given current (2011) phylogenetic placement of M. ramealis. Not transferred to Gymnopus until clarified.

Click to collapse Metadata Info

1cb1844e-36b9-11d5-9548-00d0592d548c
scientific name
Names_Fungi
1 January 2000
24 June 2025
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