Observation 207255: Peziza Dill. ex Fr.

When: 2015-05-28

Collection location: Crawford Co., Missouri, USA [Click for map]

Who: Terri Clements/Donna Fulton (pinonbistro)

No specimen available

Proposed Names

40% (2)
Recognized by sight
11% (2)
Recognized by sight: split on one side, brittle flesh

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Eye3 = Observer’s choice
Eyes3 = Current consensus


Add Comment
By: Nicolas VAN VOOREN (NicoV)
2015-06-25 03:38:52 CDT (-0500)

Well, if you cannot obtain Melzer reagent, another possibility is to use “Betadine” (I don’t know if it’s the same name in North America), a product easily found in drugstores. As this product is “highly” concentrated in iodine, you can dilute it.

Agreed, the problem is obtaining Melzer’s :)
By: Terri Clements/Donna Fulton (pinonbistro)
2015-06-23 08:22:20 CDT (-0500)
Ascus reaction
By: Nicolas VAN VOOREN (NicoV)
2015-06-23 02:18:49 CDT (-0500)

It’s easy to separate between the two choices. Peziza species possess asci reacting in blue with an iodine reagent (Melzer or Lugol), Otidea species do not react. As said many times on this forum, microscopic characters are essential to determine correctly a discomycete, only a few number of species can be identified macroscopically.

Created: 2015-06-21 18:33:09 CDT (-0500)
Last modified: 2015-06-23 02:14:13 CDT (-0500)
Viewed: 44 times, last viewed: 2017-06-20 06:27:47 CDT (-0500)
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