Observation 129667: Panaeolus acuminatus (Schaeff.) Quél.
When: 2012-11-21
( 117m)

Notes: Photos by Jérôme Legros, micrographs by Alan Rockefeller.

Growing in grass. Also collected Oct 3, 2012.

Pleurocystidia and sulphidia absent.

Spore measurements:

10.2 [12.2 ; 13] 14.9 × 7.5 [9 ; 9.6] 11.1 µm
Q = 1.2 [1.3 ; 1.4] 1.5 ; N = 33 ; C = 95%
Me = 12.6 × 9.3 µm ; Qe = 1.4

12.17 9.02
11.72 8.31
13.44 9.04
13.44 9.99
12.33 8.25
11.15 8.56
12.53 9.49
13.20 9.93
11.25 8.38
12.68 9.55
12.57 10.06
12.11 8.62
12.48 9.01
11.92 9.67
12.88 9.78
11.83 9.06
13.09 10.02
11.58 8.57
11.51 8.72
11.66 8.18
12.06 9.31
12.49 9.08
13.45 9.60
13.40 8.54
12.15 8.93
12.54 9.11
11.90 8.56
12.17 9.14
10.87 8.67
11.66 8.87
16.65 12.74
14.90 10.79
14.84 10.64

Images

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Cheilocystidia 600x
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Jérôme Legros
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Jérôme Legros
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Jérôme Legros
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Jérôme Legros
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Jérôme Legros
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Jérôme Legros
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Jérôme Legros
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Jérôme Legros
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Jérôme Legros
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Jérôme Legros
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Basidia 200x
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Basidia 200x
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Basidia 200x
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Cheilocystidia 200x
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Cheilocystidia 200x
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Cheilocystidia 600x
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Cheilocystidia 600x
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Cheilocystidia 600x
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Cheilocystidia 600x
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Cheilocystidia 600x
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Cheilocystidia 600x
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Cheilocystidia 60x
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Cheilocystidia 600x
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Cheilocystidia 600x
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Cheilocystidia 600x
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Cheilocystidia 600x
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Cheilocystidia 600x
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Cheilocystidia 600x
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Cheilocystidia 600x
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Cheilocystidia 600x
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Cheilocystidia 600x
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Cheilocystidia 060x
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Pileipellis scalp section 600x
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Spores 600x
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Spores 600x
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Pileipellis scalp section 200x
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Pileipellis scalp section 200x
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Pileipellis scalp section 200x
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Pileipellis scalp section 200x
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Pileipellis scalp section 200x
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Pileipellis scalp section 200x
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Jérôme Legros
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Jérôme Legros
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Jérôme Legros
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Jérôme Legros
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Jérôme Legros
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Jérôme Legros
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Jérôme Legros
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Jérôme Legros
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Copyright © 2012 Jérôme Legros
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Copyright © 2012 Jérôme Legros
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Copyright © 2012 Jérôme Legros
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Copyright © 2012 Jérôme Legros
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Jérôme Legros
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Pileipellis cross section 400x
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Pileipellis cross section 400x
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Pileus cross section 100x

Proposed Names

-23% (3)
Recognized by sight
-2% (3)
Recognized by sight
73% (3)
Eye3 Eyes3
Recognized by sight
Used references: Gerhardt’s Panaeolus monograph
Doesn’t look like P. paludosus – http://www.ne.jp/...
Based on microscopic features: It looks like there is more then one species photographed, but Alan claims, “The collection has 6 caps. I just scoped all of the caps and they are all the same species.” and the micro seems to correspond with P. acuminatus, I don’t think Deconica & Psilocybe will have a cellular pileipellis?

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

Eye3 = Observer’s choice
Eyes3 = Current consensus

Comments

Add Comment
Yeah…
By: Douglas Smith (douglas)
2013-03-04 09:08:28 PST (-0800)

Yeah, the most important scope photos come right at the end, at the bottom there are the cross sections of the cap surface. The cellular cap gets you away from Deconica or Psilocybe. On the little brown jobs I try to get the cap surface first, just to make sure I know which genus I should be in.

Created: 2013-03-01 04:04:49 PST (-0800)
Last modified: 2013-06-28 02:09:52 PDT (-0700)
Viewed: 228 times, last viewed: 2016-10-23 20:16:06 PDT (-0700)
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