Observation 135706: Panaeolus cinctulus (Bolton) Britzelm.
When: 2013-06-07
(36.4689° -86.4963° 283m)
Project: Panaeolus
No herbarium specimen

Notes: CCB166
Microscopic notes for 134270: http://mushroomobserver.org/134270?q=1ILFF

Images

335370
335371
Basidia were predominantly two-sterigmate, however 4-spored basidia were ovserved. 15-30 × 8-10 microns.
335372
Basidia were predominantly two-sterigmate, however 4-spored basidia were ovserved. 15-30 × 8-10 microns.
335373
Caulocystidia
335374
Caulocystidia
335375
Pileipellis at 20x and 100x, pileis trama weakly dextrinoid.
335376
Pileipellis at 20x and 100x
335380
Spore average 12.35 × 9.37 microns, Q-value 1.32
335381
Spore average 12.35 × 9.37 microns, Q-value 1.32
335382
Spore average 12.35 × 9.37 microns, Q-value 1.32
337916
40x, KOH, lots of basidia, no sulphidia.
337917
40x, KOH, lots of basidia, no sulphidia.
337918
40x, KOH, lots of basidia, no sulphidia.
337919
40x, KOH, lots of basidia, no sulphidia.
337920
Cheilocystidia
337921
Cheilocystidia
337922
Cheilocystidia
337923
Cheilocystidia
337924
337925
12.82×9.77
12.94×8.98
11.9×10.12
13.1×9.6
12.09×9.36
12.33×9.59
12.51×9.15
10.28×7.96
13.2×9.78

Proposed Names

8% (2)
Recognized by sight: The species concept of Agaricus (Panaeolus) cinctulus is based on a drawing made by Bolton in 1791. No type collection exists. Since it is not possible to know whether Bolton’s species was Panaeolus subbalteatus, P. olivaceus or P. fimicola, I consider Panaeolus cinctulus to be a nomen dubium.
Based on microscopic features: The gill faces need to be checked for sulphidia; the presence of these would indicate that it is probably Panaeolus fimicola.

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Eye3 = Observer’s choice
Eyes3 = Current consensus

Comments

Add Comment
Great observation
By: Byrain
2014-02-09 22:10:24 EST (-0500)

Smooth spores, oblique germ pore, broad cheilocystidia & no sulphidia, all shown/recorded!

Oh my
By: Justin (Tmethyl)
2013-06-07 20:24:57 EDT (-0400)

These are brilliant, well done WB.
I could look at these for hours lol.

Created: 2013-06-07 20:06:07 EDT (-0400)
Last modified: 2014-02-09 22:08:23 EST (-0500)
Viewed: 195 times, last viewed: 2016-12-08 10:41:55 EST (-0500)
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