Observation 171811: Agrocybe putaminum (Maire) Singer
When: 2014-05-30
Collection location: Sintra, Portugal [Click for map]
Who: zaca
No herbarium specimen

Notes: Dimensions of the spores:
(10.4) 11.4 – 13 (13.9) x (6.3) 6.4 – 7.6 (8.1) um
Q = (1.5) 1.6 – 1.9 (2) ; N = 24
Me = 12.1 × 7 um ; Qe = 1.7

Images

438859
438860
438861
438862
438863
Cuticle;
438864
Cheiloystidia (H2O)
438865
Cheilocystidia (congo red)
438866
Cheilocystidia (congo red)
438867
Basidia and cystidia (congo red).
438969
Dimensions of cystidia.
438970
Dimensions of cystidia.
438971
Dimensions of cystidia.
438972
Dimensions of cystidia.

Proposed Names

22% (2)
Eye3
Recognized by sight
45% (2)
Eyes3
Recognized by sight

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

Eye3 = Observer’s choice
Eyes3 = Current consensus

Comments

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I made as usual:
By: zaca
2014-07-30 17:05:01 PDT (-0700)

Detach a triangle, which is a sector centered at the center of the cap, and make a thin (as possible) section of it with the radial orientation.
Unfortunately, I cannot repeat, since I didn’t dry the mushroom.

Pileipellis
By: Byrain
2014-07-30 16:49:27 PDT (-0700)

Are you sure that is the epicutis? Looks more like the layer below it, how did you make the section?

Yes, some are
By: zaca
2014-07-30 16:45:39 PDT (-0700)

basidioles. The structure of the pileipellis doesn´t seem to be as describe in FAN6 for A. putaminum.

Basidioles
By: Byrain
2014-07-30 16:35:35 PDT (-0700)

A lot of those cystidia are basidioles I think, if this has pileocystidia, I think we can rule out A. pediades and A. ochracea leaving A. putaminum and A. smithii, the spore size points to the former I think.

It seems that …
By: zaca
2014-07-30 16:25:27 PDT (-0700)

I got wrong dimensions (from http://en.wikipedia.org/wiki/Agrocybe_putaminum) for the spores of A. putaminum: 10–12 by 5–9 μm). Thanks to Byrain I could see a better reference with the values he indicated. I upload some photos with the measurements of some of the structures: Cheilocystidia, pleurocistidia ans pileicystidia. The forms seeming to be of A. putaminum, but the dimensions of pleurocystidia and of the pileicystidia are too small.
I didn´t record the taste of the mushroom.

More info?
By: Byrain
2014-07-30 15:00:32 PDT (-0700)

Taste? Cheilocystidia length? Pleurocystidia? Pileocystidia? Germ pore width?

A. putaminun spore size from FAN6 is “Spores 9.5–13.5(15.5) × 6.0–8.0(8.5) × 5.5–7.0 μm”
Seems good with yours, as does the stem texture.

Agrocybe putaminum:
By: zaca
2014-07-30 13:57:15 PDT (-0700)

The spores are a bit to large for this species, I think.

Created: 2014-07-30 13:35:21 PDT (-0700)
Last modified: 2014-07-30 16:35:47 PDT (-0700)
Viewed: 53 times, last viewed: 2016-10-21 09:17:57 PDT (-0700)
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