Observation 22418: Hypoxylon Bull.

When: 2009-06-14

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

Who: Dan Molter (shroomydan)

No specimen available

Species Lists


Proposed Names

29% (1)
Recognized by sight
60% (2)
Recognized by sight
60% (2)
Used references: suggestions below
28% (1)
Used references: Interfungal parasitic relationships by Jeffries and Young
28% (1)
Recognized by sight: for the stromata growing up out of the crust
Used references

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= Observer’s choice
= Current consensus


Add Comment
I hold the yellow specimens to be Hypocrea
By: Gerhard Koller (Gerhard)
2009-06-22 08:43:59 NZST (+1200)

and this one I believe is Hypoxylon but could be all the same. Andreas is right about the ostioles I would say

By: Andreas Gminder (mollisia)
2009-06-22 07:57:24 NZST (+1200)

I don’t think that there are pores in the yellow “thing”, but that these “needle points” are ostioles. I still think that your orange fungus here is the initial stadium of a Hypoxylon species.
If the orange and the yellow fungus are the same, then the orange is the younger (or imperfect) one and the yellow is the mature (or perfect) form.

By: Dan Molter (shroomydan)
2009-06-22 07:35:50 NZST (+1200)

I think this is a later development of the yellow species in this observation, in which the pores are visible.

What ever it is, its pretty common right now. There was nothing but yellow out at the beginning of June and now only the orange. The little brown things sticking up from the surface of this one caught my eye. I’m not sure what they are.

I see no pores either
By: Andreas Gminder (mollisia)
2009-06-22 07:30:27 NZST (+1200)

Another idea would perhaps be the initial states of Hypoxylon sp., e.g. Hypoxylon rubiginosa agg. or H. ticinense

I can’t see any pores here
By: Gerhard Koller (Gerhard)
2009-06-22 07:19:58 NZST (+1200)

is this a poroid fungus? if corticioid it could be Phanerochaete chrysorhiza if of soft texture, if of hard maybe a Hymenochaete?