Observation 69029: Xylaria polymorpha (Pers.) Grev.
When: 2011-06-12
No herbarium specimen

Notes: Brown, smooth, with crinkly lines at middle, a few little dots at the base

Proposed Names

70% (3)
Eye3 Eyes3
Recognized by sight: I photographed this a year later: dead man’s finger
64% (2)
Recognized by sight: Not caespitose, not black, no zone at the margin, no microscopy to support ID.

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Eye3 = Observer’s choice
Eyes3 = Current consensus


Add Comment
By: Danny Newman (myxomop)
2014-06-04 02:55:05 CEST (+0200)

will know, but the rule of thumb on xylariaceous fungi is micro is usually needed for species determinations. X. polymorpha is more a species complex than a single taxon, particularly when one considers how many things get wantonly called X. polymorpha across the world, in checklists, on forays, in field guides, seldom if ever corroborated by microscopy.

By: Martin Livezey (MLivezey)
2014-03-08 14:09:09 CET (+0100)

I am taking too many liberties. This year I hope to add microscopy to my observations of Xylariaceae, that should clarify some things.

The new
By: Rocky Houghtby
2014-03-08 02:51:59 CET (+0100)

Picture does look more like X. polymorpha. I wonder how many existing taxa also take that form in maturity? I wonder how many undescribed taxa appear in the same fashion. I don’t really have that strong of an opinion about this observation. I wouldn’t call it X. polymorpha if I had done the collecting and labeling, but it certainly could be.

Rocky and P. Hill
By: Martin Livezey (MLivezey)
2014-03-08 02:44:16 CET (+0100)

I understand and accept your comments. It is just that I knew something you did not when I posted this…, and now I have found it. Here is a photo of what I believe is the same fruit body 14 months later. There were others on the log at that time that are as convincing. Still no microscopy, but the fb looks good to me…,

But yours is brown… yet so are SOME others.
By: P. Hill (phill)
2014-03-03 03:57:45 CET (+0100)

Most Deadman’s Fingers – Xylaria polymorpha – photos are so gray, white even bluish, but I see a few on MO are more like yours and are brown to tan.

I’m curious about what appears to be this brownish Eastern North American variant in the MO observations. …
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Created: 2011-06-12 23:38:55 CEST (+0200)
Last modified: 2015-03-21 02:06:50 CET (+0100)
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