Observation 52804: Ascomycota Caval.-Sm.

When: 2010-08-21

Collection location: Senguio, Michoacan, Mexico [Click for map]

Who: Alan Rockefeller (Alan Rockefeller)

Specimen available

On display at the Feria del Hongo de Senguio (Senguio fungus fair).

This mushroom was saved for microscopy.

Spores 8 – 10 × 2 – 3 micrometers.


dried cross section
dried cross section
dried cross section
Spores 1000x
Spores 1000x

Proposed Names

-51% (3)
Recognized by sight
-41% (3)
Recognized by sight
-39% (4)
Recognized by sight
16% (4)
Recognized by sight: Looks like perithecia forming near the bottom of the “head”? Just an idea…
-30% (3)
Recognized by sight
20% (2)
Recognized by sight

Please login to propose your own names and vote on existing names.

Eye3 = Observer’s choice
Eyes3 = Current consensus


Add Comment
I don’t get it
By: Danny Newman (myxomop)
2014-09-12 21:59:39 CDT (-0400)

No host, no micro, no sequence. How is this “Promisingly” a member of a genus of primarily truffle parasites, which looks nothing like any of the known, truffle-parasitizing members of that genus?

The collector
By: Alan Rockefeller (Alan Rockefeller)
2010-11-03 21:00:35 CST (-0500)

The collector would not have known to look for an insect host. In Senguio they pay local people a fixed price per kilogram to collect mushrooms for the fair.

tough call
By: Danny Newman (myxomop)
2010-11-03 20:33:20 CST (-0500)

but given the size and fleshiness of the stroma, assuming it’s an entomopathogen, it would have to have been growing on a comparably large (and fleshy) host, making it unlikely to be overlooked by the collector.

By: Alan Rockefeller (Alan Rockefeller)
2010-11-03 14:52:24 CST (-0500)

Yes I leave a scope down there so I do not need to carry it on the plane every time. We usually hunt mushrooms all day and look at them all night. I intended to scope this one but I got distracted and no pics ended up on my cf card. I am back in the US now, I will take a closer look at this sample next year. A pic of the scope is here.

By: Debbie Viess (amanitarita)
2010-11-03 10:55:49 CST (-0500)

got scope down there, Alan?

The spores
By: Irene Andersson (irenea)
2010-11-03 10:41:01 CST (-0500)

are different.
Long and thin in Cordyceps, almost globose in Hypocrea.

By: Debbie Viess (amanitarita)
2010-11-03 10:07:22 CST (-0500)

it does look like it has perithecia…if one didn’t collect the potential host truffle, how does one tell the difference between Podostroma/Hypocrea and
Cordyceps in hand or under scope?

By: Michael W (Michael Wallace)
2010-11-03 05:52:37 CST (-0500)

Possibly a young Tulostoma specimen that has yet to develop it’s apical pore.

Created: 2010-09-14 14:28:37 CDT (-0400)
Last modified: 2014-09-14 23:17:50 CDT (-0400)
Viewed: 198 times, last viewed: 2018-07-16 02:07:41 CDT (-0400)
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