Observation 87262: Mycena sect. Longisetae A.H. Sm. ex Maas Geest.
When: 2012-02-01
Herbarium specimen reported
0 Sequences

This mushroom is tiny. This specimen is about 1mm across the cap though I have seen specimens of up to 4mm across. I presume the spikes are infertile cells that are attached to the cap.

Proposed Names

27% (1)
Recognized by sight: As far as I know this is a new species
55% (1)
Recognized by sight: Dennis Desjardin has written a world mongraph on this group, but nothing from OZ! SE Asia is its epicenter of distribution. Here is his paper, w/descriptions:

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Eye3 = Observer’s choice
Eyes3 = Current consensus


Add Comment
just when you think it can’t get any cooler…
By: Debbie Viess (amanitarita)
2012-02-02 08:04:20 PST (-0800)

you manage to top yourself!

bet Dennis doan have a movie of these suckers! ;)

By: Steve Axford (steveaxford)
2012-02-01 23:17:33 PST (-0800)

Thanks for that link Debbie. Very useful.
I do have a short time lapse of these (and Mycena chlorophos). I hope you like them


By: Sava Krstic (sava)
2012-02-01 21:49:09 PST (-0800)

Steve, thanks for sharing these wonderful photos. One is on my desktop background now.

By: Erin Page Blanchard (CureCat)
2012-02-01 19:30:19 PST (-0800)

So the setae are not cherocytic cells then, eh?

By: Tim Sage (T. Sage)
2012-02-01 19:15:41 PST (-0800)


By: Erin Page Blanchard (CureCat)
2012-02-01 18:51:14 PST (-0800)

Why are mushrooms so cool?!?!!

By: Josh M.K. (suchen)
2012-02-01 18:47:58 PST (-0800)

Stunning camera work to capture something that small so beautifully. I bet section Longisetae is just as beautiful under the ’scope.

oops, link got stripped…
By: Debbie Viess (amanitarita)
2012-02-01 08:08:00 PST (-0800)


Dennis Desjardin, an expert on Mycena species worldwide, tells me that he has written three papers on this interesting group!

Here’s a summary pull-quote on the function of those marvelous cap hairs:

“All members of section Longisetae develop primordia covered with numerous erect, stiff, pileosetae that aid to deter animal predation on the immature hymenophore.”

Asexual cells
By: Steve Axford (steveaxford)
2012-01-31 20:41:36 PST (-0800)

Hi Dan,
I think the hairs are asexual cells that can keep growing if they fall onto a suitable substrate. They are a favourite for me and they grow all over my property and are probably quite common here. Of course, very few people have ever seen them because they are so smallo.

By: Dan Molter (shroomydan)
2012-01-31 20:26:17 PST (-0800)

Absolutely beautiful Steve. I like the bottom one 197789 the best. I’m wondering how the hair could be adaptive, almost looks like asexual fruit-bodies on top of a regular sexual agaric.

Exquisite photos of some spectacular specimens.

great, awsome australian find
By: Jonathan M
2012-01-31 15:40:35 PST (-0800)

amazing find, congrat!! wonder how it will be named if it is a new specie?

Good lord
By: Christian (Christian Schwarz)
2012-01-31 15:25:48 PST (-0800)

That thing is beautiful. Well done.

By: Steve Axford (steveaxford)
2012-01-31 14:21:11 PST (-0800)

Thanks guys. I hope to get some DNA testing done on this one soon (in the next year!!!). A mycologist friend seems to think that this is a new one. He thinks that almost all the micro species up here (or down, depending on which way up you are)are un-named, but few are quite this beautiful.

By: walt sturgeon (Mycowalt)
2012-01-31 13:55:30 PST (-0800)

At first glance I suspected a Spinellus infection but on closer inspection all I can say is Wow!

By: Danny Newman (myxomop)
2012-01-31 13:52:08 PST (-0800)

simply enchanting. skyrocketed to the top of my list of favorite observations on the site. bravo.

Created: 2012-01-31 13:46:31 PST (-0800)
Last modified: 2012-01-31 18:52:06 PST (-0800)
Viewed: 577 times, last viewed: 2017-10-31 12:30:44 PDT (-0700)
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