Observation 189851: Hypocrea pulvinata Fuckel
When: 2014-11-26

Notes: Log discovered by David Rust.

Proposed Names

86% (1)
Eye3 Eyes3
Recognized by sight: orange cushion with pyrothecia.
Based on microscopic features: ascospores squared oblongs.

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Eye3 = Observer’s choice
Eyes3 = Current consensus


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that is apparently NOT so …
By: Debbie Viess (amanitarita)
2014-11-28 12:52:04 EST (-0500)

since pulvinata are primarily found on wood in New Zealand!


jury is still out on this ID.

It’s highly unlikely
By: Noah Siegel (Noah)
2014-11-28 12:42:55 EST (-0500)

that Hypocrea pulvinata would be growing on wood.

Try the Southeast Hypocrea key, a lot of these species are widespread in their range.

Hypocrea patella …
By: Debbie Viess (amanitarita)
2014-11-28 12:34:37 EST (-0500)

has asci with 16 mature spores that are subglobose. these have 16 spores that are squared-off ellipses.

seems more likely to be H. pulvinata with an as of yet undiscovered host, rather than a NE-SE species waaaaay outside of its range and with very different spores.

both original material of fbs and host wood available for study.

note: just reviewed my bad micro photos (which is why I didn’t post them); there are also 16 spores in these asci, but that is apparently also true for pulvinata. the Ceskas have very nice line drawings of these here on MO, which resemble what I saw.

Not sure just how to tell the diff between these two species. it is a case of either our host info being wrong or our distribution data being wrong. or maybe both!

By: Noah Siegel (Noah)
2014-11-28 12:20:22 EST (-0500)
Compare it with
By: Noah Siegel (Noah)
2014-11-28 11:27:06 EST (-0500)

Hypocrea patella.

I have only seen H. pulvinata growing on old polypores (esp. Fomitopsis) in CA.

I have not seen Hypocrea patella in CA, but occasionally see it in the northeast. Nice find.

I am not so good at IDing rotted, decorticated wood …
By: Debbie Viess (amanitarita)
2014-11-28 11:00:19 EST (-0500)

but we have the log here, and you are welcome to have at it!

I suspect that it is live oak.

The entire log was covered in fungal colonies of one sort or another. I added another photo of more of the log. Whatever it is, it was quite popular with the woodrotters! :)

By: Noah Siegel (Noah)
2014-11-27 21:08:39 EST (-0500)

was this growing on?

Created: 2014-11-27 15:15:20 EST (-0500)
Last modified: 2014-11-28 13:42:57 EST (-0500)
Viewed: 89 times, last viewed: 2016-10-20 17:17:48 EDT (-0400)
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