Observation 31884: Marasmiellus Murrill

When: 2010-01-11

Collection location: Forest of Nisene Marks State Park, Aptos, California, USA [Click for map]

Who: Noah Siegel (Noah)

Specimen available

small, probably 7mm tops, growing on hardwood. just one bright pink one, a couple of others were tinged pink.

Proposed Names

57% (1)
Recognized by sight
60% (3)
Recognized by sight
0% (2)
Recognized by sight

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Eye3 = Observer’s choice
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Add Comment
I have it.
By: Christian (Christian Schwarz)
2010-01-15 08:22:09 PST (-0800)
but…no herbarium specimen!!!
By: Debbie Viess (amanitarita)
2010-01-15 08:11:23 PST (-0800)

I agree that this is way cool, but fear that Noah doesn’t still have it, bein’ a Travelin’ Man and all. Prove me wrong, Dude!

On the other hand, Dessicata Deb does have the similar fruit bodies (sans pink coloration) from Mendocino late last year, availble to any Marasmiologist who might want ’em.

And the fun continues…

lamellar intervenosity
By: Alan Rockefeller (Alan Rockefeller)
2010-01-15 04:14:44 PST (-0800)

I asked Dennis Desjardin about these and he said “That’s a totally cool species. At first sight I’d say a Marasmiellus (like other posters have speculated), and M. candidus came immediately to mind (which as you know can actually be deep pink, but that is usually in aged specimens, not young ones). The stipe features are not M. candidus (too thick, too white, too ornamented). Don’t worry too much about lack of lamellar intervenosity, that often develops in age and these are young specimens, so determining if it is intervenose or not is impossible at this time. If the pileipellis is a Rameales structure it is definitely not M. candidus nor does it belong to sect. Candidi. The latter lack diverticulate hyphae but do have lots of erect pileocystidia and these are long-cylindrical to subfusoid, as are the numerous hymenial cystidia. From the descriptions posted I do not know this species. It is worth keeping and studying for it may possibly be an undescribed species. By the way, M. candidus grows on conifers (mainly hemlock or Doug fir) not hardwoods.”

By: Erin Page Blanchard (CureCat)
2010-01-12 22:12:23 PST (-0800)

Well I am surprised. And Noah, I meant what I said. But my intuition was wrong on this one.

Very cool!! Probably an undescribed species then? As I said before, it does not look like any Marasmiellus species I have seen.

This is not M. candidus
By: Christian (Christian Schwarz)
2010-01-12 10:43:51 PST (-0800)

even the more mature specimens had tightly convex caps, non – intervenose lamellae, relatively thick flesh, non-darkening, fleshy (not tough) stipes, etc. A couple of the white ones I collected turned more pink in my tacklebox overnight.

By: Debbie Viess (amanitarita)
2010-01-12 10:35:46 PST (-0800)

certainly not Marasmiellus candidus, that stains slightly pink at age, and has a slender, dark-based stipe. this does look a lot like the unknown that I collected in Mendo CO, with cystidia everywhere and widely spaced gills.

where the heck did that bright pink color come from??!

I’ve seen pink…
By: Douglas Smith (douglas)
2010-01-12 10:07:04 PST (-0800)

I’ve seen M. candidus go pink a few times. I think I posted a photo of a pink one here. But it should also have intervenose lamellae to be a Marasmiellus, and I think M. candidus pretty much always has a darkening base to the stipe?

It’s Marasmiellus
By: Christian (Christian Schwarz)
2010-01-12 09:50:31 PST (-0800)

at least sensu lato.

The pileipellis is rameales – structure, the trama is non-dextrinoid, the spores are long-ellipsoid (Q avg. > 3 !), clamps in the stipe hyphae, cheilocystidia abundant, long and irregularly contorted.

Photos later.

My first
By: Noah Siegel (Noah)
2010-01-12 08:47:45 PST (-0800)

reaction was no way is this a Marasmiellus and then I probably egged on CureCat to start arguing with you… but looking at it now, yes, maybe I can see a resemblance. lets see what Christian finds under the scope.

too thick ?
By: Johannes Harnisch (Johann Harnisch)
2010-01-12 07:58:35 PST (-0800)
By: Erin Page Blanchard (CureCat)
2010-01-11 22:45:51 PST (-0800)

No Marasmiellus species I have seen looks anything like this.

These and the other observation linked to look like they are covered in cystidia…

By: Dimitar Bojantchev (dimitar)
2010-01-11 21:52:29 PST (-0800)

Seen it before. Asked Desjardin recently about the pink tinges. He said M. candidus. Under certain circumstances it tinges strong pink…

Perhaps similar to these:
By: Christian (Christian Schwarz)
2010-01-11 21:13:24 PST (-0800)


I’ll do some scope work tomorrow morning.

Created: 2010-01-11 20:59:13 PST (-0800)
Last modified: 2016-01-23 09:38:33 PST (-0800)
Viewed: 239 times, last viewed: 2017-06-06 07:01:15 PDT (-0700)
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