Observation 6066: Xylaria hypoxylon (L.) Grev.
When: 2008-01-14
No herbarium specimen

Notes: Found fruiting in an alley in redwood duff.

Proposed Names

72% (3)
Eyes3
Recognized by sight
30% (2)
Recognized by sight
30% (2)
Recognized by sight

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Eye3 = Observer’s choice
Eyes3 = Current consensus

Comments

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Tall structure
By: Debbie Drechsler (debdrex)
2012-06-18 18:21:53 PDT (-0700)

I can’t comment on the nicely stated “frantic apical branching” but can say that the tall stature most likely occurred because these were fruiting in redwood duff that was several inches deep in an urban alley.

Nathan
By: Danny Newman (myxomop)
2012-06-18 18:00:42 PDT (-0700)

I have invited Thomas Læssøe to make an appearance and scan over some of the many Xylaria here on the site. In the meantime, what literature I have available to me frequently makes use of the term “Xylaria hypoxylon complex,” citing X. hypoxylon s.s.’ frequent misidentification as/confusion with X. digitata, and vice versa. Other parts of the same publications go on to report suspected conspecificity of X. digitata with a laundry list of other taxa, taxa which, in the accompanying black and white photographs, don’t look anything like our classic idea of X. hypoxylon. To make matters worse, none of the Jack Rogers trilogy I’ve been scanning (cited below) actually gives a full description of X. hypoxylon. Indeed, I’m having a hard time finding one anywhere. My suspicion is that this species is one in a series of cans of worms that will be opened up when I or anyone else can competently take on the 26 pages of Xylaria on the site, not to mention sister genera.

In the meantime, I’ll change both votes to “Could Be” on this ob, since it very well could be X. hypoxylon as much as some other, unsung, hypoxylon complex member. The original hunch was that this tall stature with frantic apical branching is unlike most things we’ve called X. hypoxlon so far, hence proposing Xylaria sp.

References:

Jack D. Rogers
Xylaria bulbosa, Xylaria curta, and Xylaria longipes in Continental United States
Mycologia , Vol. 75, No. 3 (May – Jun., 1983), pp. 457-467

Jack D. Rogers
Xylaria cubensis and Its Anamorph Xylocoremium flabelliforme, Xylaria allantoidea, and Xylaria poitei in Continental United States
Mycologia , Vol. 76, No. 5 (Sep. – Oct., 1984), pp. 912-923

Jack D. Rogers
Xylaria acuta, Xylaria cornu-damae, and Xylaria mali in Continental United States
Mycologia , Vol. 76, No. 1 (Jan. – Feb., 1984), pp. 23-33

Why wouldn’t this by X. hypoxylon?
By: Nathan Wilson (nathan)
2012-06-18 17:31:34 PDT (-0700)

This certainly looks typical of material I’ve seen in California and I’ve only heard the name X. hypoxylon applied to these. Is there something I’m missing?

Created: 2008-01-15 19:50:29 PST (-0800)
Last modified: 2012-06-18 18:01:51 PDT (-0700)
Viewed: 83 times, last viewed: 2016-03-20 08:35:00 PDT (-0700)
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