Observation 47387: Mycena mamaku Segedin

When: 2010-06-23

Collection location: Northwood Reserve, Albany, Auckland, New Zealand [Click for map]

Who: Michael W (Michael Wallace)

No specimen available


[admin – Sat Aug 14 02:03:55 +0000 2010]: Changed location name from ‘Northwood Reserve, Albany, Auckland, New Zealand.’ to ‘Northwood Reserve, Albany, Auckland, New Zealand’

Proposed Names

92% (2)
Eye3 Eyes3
Recognized by sight

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Eye3 = Observer’s choice
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thanks Erin.
By: Debbie Viess (amanitarita)
2010-06-24 22:18:55 CDT (-0400)
very cool mycena…
By: Debbie Viess (amanitarita)
2010-06-23 10:00:30 CDT (-0400)

those caps look like bundt cakes!

although it is difficult to find many images of either of these curious mycenas, the ones that I did locate showed one pretty clear difference…the Mycena mamaku had approx. twice as many gills as Mycena detrusa, and they even seem to be split (see Michael’s photo). Of course, it could be just lamellulae, but the one gill that is clearly depicted does seem to bifurcate from a common base. And, it sounds as though, at least in NZ, detrusa is a misnomer.

By: Michael W (Michael Wallace)
2010-06-23 07:43:11 CDT (-0400)

I haven’t seen any images of the two species I mentioned, I just read that they were similar in the notes for the description of M. mamaku.

M. detrusa was first described from Papua New Guinea, the specimens from NZ that are tentatively named M. detrusa differ from that species in the shape of the cheilocystidia.

By: Erin Page Blanchard (CureCat)
2010-06-23 06:46:52 CDT (-0400)

Looked at a few images online; M. lohwagii and M. pterigena look similar, but at least to me they do not look very similar to M. mamaku and M. detrusa (which look very similar to one another).

By: Michael W (Michael Wallace)
2010-06-23 06:38:46 CDT (-0400)
this species closely resembles these two species, M. lohwagii and M. pterigena so maybe Douglass might like to check those two out, M. mamaku is easily recognised by it’s small pileus size, 2-3mm in diameter and it’s exclusive habitat of the tree fern Cyathea medullaris.
I’m not sure,
By: Michael W (Michael Wallace)
2010-06-23 06:32:10 CDT (-0400)

It’s occurrence in New Zealand is uncertain according to the Landcareresearch site and collections from here that are considered to be that species are only named that tentatively!

By: Erin Page Blanchard (CureCat)
2010-06-23 06:25:52 CDT (-0400)

How do you distinguish M. mamaku from M. detrusa?

By: Michael W (Michael Wallace)
2010-06-23 06:03:42 CDT (-0400)
it does look very similar, it would be interesting to compare that collection with NZ collections.
By: Erin Page Blanchard (CureCat)
2010-06-23 05:54:46 CDT (-0400)

This looks very much like observation 4649 from California, US!

Very cool species!

Created: 2010-06-23 05:22:32 CDT (-0400)
Last modified: 2011-03-07 01:49:31 CST (-0500)
Viewed: 259 times, last viewed: 2018-01-10 21:48:09 CST (-0500)
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