Observation 65494: Mycena alcalina (Fr.) P. Kumm.

When: 2011-04-13

Collection location: Strouds Run State Park, Athens, Ohio, USA [Click for map]

Who: Dan Molter (shroomydan)

No specimen available

These small Mycenas were very common on moss covered pine logs throughout the park today.



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Eye3 = Observer’s choice
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The name alcalina
By: Irene Andersson (irenea)
2011-05-11 08:36:24 CEST (+0200)

has been abandoned and replaced with two new species, Mycena silvae-nigrae and Mycena stipata (the latter is smaller, and viscid when wet).
They can be told apart with microscopy: 2- or 4-spored basidia, with or without clamps and pleurocystidia etc.

What is a alcaline odor?
By: Alan Rockefeller (Alan Rockefeller)
2011-05-11 07:51:22 CEST (+0200)
This species
By: walt sturgeon (Mycowalt)
2011-05-11 04:14:11 CEST (+0200)

has been very common for a couple weeks on pine logs in NE Ohio at Beaver Creek State Park. The alcaline odor has been consistent

M. alcalina
By: Dan Molter (shroomydan)
2011-05-11 03:11:51 CEST (+0200)

I think you got it Aaron. Both your collection and these seem to match Kuo’s description.

By: AmatoxinApocalypse (AmatoxinApocalypse)
2011-05-11 01:49:29 CEST (+0200)

From Kuo’s page on Mycena leptocephala

“Mycena alcalina is very similar, even in microscopic features, but it grows in clusters on conifer stumps and logs, and tends to be a little stockier.”

More info on Mycena leptocephala from Kuo’s site…


All sources I have read say Mycena alcalina usually grows on conifer stumps/logs. I am not saying these are alcalina but they sure look similar, and to make matters even more confusing check out the pics of Mycena leptocephala.

It would be great if you had crushed one cap and noticed the odor.

By: Dan Molter (shroomydan)
2011-04-14 18:52:50 CEST (+0200)

Hi weiliiiii,

These do appear to be the same Mycenas as those in your observation, but I’m not sure that M. alcalina is the best name. Other observations listed under that name appear to be larger and are shown growing from the ground. These are rather small, and I see them only on pine logs. They might be M. alcalina, but I suspect some other name will turn out to be a better match.

What do you think Dan?
By: AmatoxinApocalypse (AmatoxinApocalypse)
2011-04-14 10:53:43 CEST (+0200)

Did you happen to notice what they smelled like?

This looks similar to http://mushroomobserver.org/19532?q=47jh, what do you think Dan?

Created: 2011-04-14 04:41:35 CEST (+0200)
Last modified: 2011-05-11 07:49:45 CEST (+0200)
Viewed: 168 times, last viewed: 2018-04-30 07:32:03 CEST (+0200)
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