Observation 22589: Entoloma melanocephalum G. Stev.

When: 2009-06-21

Collection location: Kaipara harbour, Auckland, New Zealand [Click for map]

Who: Michael W (Michael Wallace)

Specimen available

On soil under tree ferns in native New Zealand bush, (Kunzea, Cyathea).


Copyright © 2009 Michael
Copyright © 2009 Michael
Copyright © 2009 Michael
Copyright © 2009 Michael
Copyright © 2009 Michael
Note, lamellae with pale purple margin.
Copyright © 2009 Michael
Spores, Scale divisions in all microscopy = 2.5 microns.
Copyright © 2009 Michael
Copyright © 2009 Michael
Copyright © 2009 Michael
Copyright © 2009 Michael
Blue pigmented cells of the pileus surface.
Lamellae showing pale blue margins.

Proposed Names

28% (4)
Recognized by sight
-18% (2)
Recognized by sight
77% (2)
Eye3 Eyes3
Recognized by sight
Used references: The Fungi of New Zealand Volume 5: Agaricales of New Zealand 1 – Pluteaceae – Entolomataceae E. Horak

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Eye3 = Observer’s choice
Eyes3 = Current consensus


Add Comment
Got it.
By: Christian (Christian Schwarz)
2011-01-21 09:33:22 CST (-0600)

Thanks for the information, Michael.

I can see the colored lamellar margin now – it is very light but it’s there.

I also struggle with unreliable color reports and oddly colored mismatched photos in some of the California literature.

By: Michael W (Michael Wallace)
2011-01-21 04:38:36 CST (-0600)

The link to the descriptions for E. melanocephalum and it’s synonyms.

This collection is a good match for that species in macroscopic and microscopic form, the colour is just quite variable, from fuscous to deep blue, the stipe is slightly green nearer the base.

I’ve added an image from this collection which I hope shows the pale blue marginate lamellae a bit clearer.

It’s E. melanocephalum.
By: Michael W (Michael Wallace)
2011-01-20 23:36:04 CST (-0600)

I’m certain it is that species, if you look closely at the lamellae image they do have a blue margin, when he says a blue-green stipe he means blue to green, the colour in his images can’t be trusted, look at the image of E. sulphureum, it looks orange in his image whereas in his description he describes it as being straw yellow to deep yellow.

Here is a link to the landcareresearch page for E. melanocephalum.

J.A. Cooper’s observation PDD 87443 shown on that page is not E. melanocephalum it’s E. asprelloides with the brown plasmatic pigment in the terminal cells of the pileipellis.

In that reference
By: Christian (Christian Schwarz)
2011-01-20 23:14:11 CST (-0600)

It mentions main identifying characters including a blue-green stipe when young and blue-marginate lamellae. Neither of these are present here, and the color photographe of E. melanocephalum shows quite a differently colored mushroom.

By: Noah Siegel (Noah)
2009-06-28 17:52:44 CDT (-0500)

most?(around 80) of the NZ species of Entoloma have been described in Horak’s The Fungi of New Zealand Volume 5: Agaricales of New Zealand 1 - Pluteaceae – Entolomataceae

I did find this one at the NZ Fungus Foray, (but I forget the name for it, will have to unpack my stuff and find my notes…)

This is probably
By: Gerhard Koller (Gerhard)
2009-06-28 15:42:39 CDT (-0500)

a yet not described species … I found a lot of similar ones in Australia and most turned out to be unknown before (but still have no name)

Thanks Dan,
By: Michael W (Michael Wallace)
2009-06-28 06:54:55 CDT (-0500)

This is a very beautiful mushroom, I wish I could have found more specimens!
I am having trouble finding any species from New Zealand that resemble this, the only really blue one I could find was E. hochstetteri.

Beautiful Inski!
By: Dan Molter (shroomydan)
2009-06-28 06:49:09 CDT (-0500)

Created: 2009-06-28 01:41:21 CDT (-0500)
Last modified: 2011-01-21 09:33:49 CST (-0600)
Viewed: 182 times, last viewed: 2018-07-27 18:59:56 CDT (-0500)
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