Observation 115972: Otidea bufonia (Pers.) Boud.
When: 2012-08-30
( 2000m)
Herbarium specimen reported

Notes: Under oak.

Spores 2/3rds with 2 oil droplet and 1/3rd with one. Spore measurements:

10.2 [11 ; 11.4] 12.2 × 5.3 [5.7 ; 5.9] 6.3 µm
Q = 1.8 [1.9 ; 2] 2.1 ; N = 30 ; C = 95%
Me = 11.2 × 5.8 µm ; Qe = 1.9

Rarely (approx 1%) of the spores are up to 8 µm wide.

Asci with blunt tips. Paraphyses curly.

Herbarium specimen in the Cacoma 2012 bag.

Images

280048
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280049
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Cross section 25x
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Pileipellis 100x
280051
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Hymenophore 100x
280052
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Hymenophore 100x
280053
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Spore in ascus, 1000x
280054
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Spores 1000x
280055
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Paraphyses 100x
280056
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Pileipellis 100x
280057
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Pileipellis 400x
308996
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308997
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308998
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308999
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311491
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Spores 1000x
311492
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Spores 1000x with measurements
311493
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Cross section stained with congo red, hymenophore on the bottom
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Trama 400x, stained with congo red
311495
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Non-fertile surface 100x with congo red
311496
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Hymenophore and paraphyses 100x with congo red
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Hymenophore and paraphyses 400x with congo red

Proposed Names

29% (1)
Recognized by sight
82% (2)
Eye3 Eyes3
Recognized by sight: This is a common species under decideous wood, with dark colors, often with purplish tinges, fading in reddish brown with dried conditions
Based on microscopic features: The navicular spore shape is characteristic, although the spore size given here is a bit smaller than in typical collections
29% (1)
Recognized by sight: Ibai Olariaga Ibarguren on Ascofrance said “From what I can see in the photos, it looks very much like an undescribed species of Otidea close to O. formicarum, from which it differs clearly in the longer spores with higher length/width ratio, among other things. The apothecia with upper horizontal margin, dark brown colour, and especially, the spore size are very characteristic.”
Based on microscopic features

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

Eye3 = Observer’s choice
Eyes3 = Current consensus

Comments

Add Comment
Thank you Nicolas :)
By: Elsa (pinknailsgirl)
2013-02-21 05:16:49 PST (-0800)

for the availability and kindness in teaching clearly and objectively.

Difference between Peziza badia and O. bufonia
By: Nicolas VAN VOOREN (NicoV)
2013-02-20 23:27:21 PST (-0800)

Elsa,
the two major differences between Peziza badia and O. bufonia are:
1) Ascus top of P. badia reacts in blue with a iodine reagent as the other members of Pezizaceae
2) Spores of P. badia are ornamented; if you observed them in cotton blue reagent you will observe a sort of network.
Structure of flesh is also different, but the first two points are easy to observe for anyone who has a microscope.

Troubled
By: Nicolas VAN VOOREN (NicoV)
2013-02-20 23:18:00 PST (-0800)

As I posted on Ascofrance, I’m troubled by the name suggested by Ibai Olariaga. I know the species provisionaly Otidea subformicarum and I do not recognize it on these pictures. As I said before, the spore size is a bit small for O. bufonia, so this collection needs more investigation.

A video of this observation
By: Alan Rockefeller (Alan Rockefeller)
2013-02-10 05:23:38 PST (-0800)
By: Elsa (pinknailsgirl)
2013-01-11 05:52:41 PST (-0800)

Sorry, I’m so tired today that did something and the comment was missing. Nicolas, could you please explain me the microscopic difference between P. Badia and O. bufonia?

Created: 2012-11-06 17:15:10 PST (-0800)
Last modified: 2015-06-30 17:43:07 PDT (-0700)
Viewed: 204 times, last viewed: 2016-11-18 05:26:02 PST (-0800)
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