Observation 182637: Gymnopilus P. Karst.
When: 2014-10-12
( 1900m)
No herbarium specimen

Notes: On hardwood, probably oak.

Pileus viscid.

Taste extremely bitter and slightly like anise.

Spores minutely ornamented, strongly dextrinoid, without a germ pore, 6.3 – 7.1 – 4 – 4.8 µm. Basidia 4 spored. Pleurocystidia utriform to subcapitate, 17 – 22 × 6.5 – 8 µm.

Pileipellis interwoven, pileocystidia absent. Pileus trama interwoven. Caulocystidia in tufts, subcapitate, common. Cheilocystidia subcapitate, often narrow.

6.2 [6.6 ; 6.9] 7.2 × 4 [4.3 ; 4.6] 4.9 µm
Q = 1.4 [1.5 ; 1.6] 1.7 ; N = 12 ; C = 95%
Me = 6.7 × 4.4 µm ; Qe = 1.5

6.29 4.34
6.85 4.31
6.91 4.15
6.70 4.55
6.58 4.64
7.05 4.70
6.33 3.95
6.76 4.79
6.65 4.40
6.73 4.59
6.65 4.42
7.14 4.54

Pleurocystidia:

16.86 7.33
18.07 6.70
22.38 7.68
22.15 7.97

Images

468512
IMG_1491.JPG
468513
IMG_1493.JPG
468514
IMG_1494.JPG
468516
IMG_1736.JPG
Pileipellis, pileus trama 400x
468517
IMG_1738.JPG
Pileipellis, pileus trama cross section 400x
468518
IMG_1737.JPG
Lamellar trama 400x
468519
IMG_1740.pixi.jpg
Cheilocystidia 400x
468687
IMG_1741.pixi.jpg
Spores 1000x
468815
IMG_1751.pixi.jpg
Pileus trama scalp section
468834
IMG_1757.JPG.jpg
Lamellar trama or pileus trama, 400x
469716
IMG_1749.JPG
lamellar trama 400x
469717
IMG_1750.JPG
lamellar trama 400x
469718
IMG_1752.JPG
Pleurocystidia

Proposed Names

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Eye3 = Observer’s choice
Eyes3 = Current consensus

Comments

Add Comment
it’s a scalp section of the pileus…
By: Richard and Danielle Kneal (bloodworm)
2014-10-14 23:07:46 EDT (-0400)

that caught edges of the gills that produce basidia/cystidia.

Last photo
By: Alan Rockefeller (Alan Rockefeller)
2014-10-14 22:45:50 EDT (-0400)

I am not really sure what the last photo shows. It looks like lamellar trama, except that the lamellar trama looks way different, as you can see in the lamellar trama photo. I was really confused when I saw it, that is why I put the comment as “lamellar trama or something…”

What it looks like to me is pileus trama, surrounded by basidia. Not sure how that could be possible.

But it’s a cool photo so I added it even though I am not sure what it means.

the last photo…
By: Richard and Danielle Kneal (bloodworm)
2014-10-14 19:21:02 EDT (-0400)

shows an almost picture perfect pseudoparenchyma.

im aware of the contradictions with the habitat and substrate…
but, it’s almost too perfect to disregard.

the type appears to be in good condition…

http://mycoportal.org/portal/taxa/index.php?taxon=232917

Exactly
By: Rocky Houghtby
2014-10-14 15:53:39 EDT (-0400)

You would have to ignore that or assume there was a veil to get nowhere else in the key.

??
By: Richard and Danielle Kneal (bloodworm)
2014-10-14 15:50:33 EDT (-0400)

the spores are dextrinoid in aurantiophyllus.

also…

“finally rusty from spores, close, broad, edges often eroded, staining rusty orange where bruised.”

a radial section from the center of the pileus will reveal the trama to be radially disposed…
a tangential section helps in determining this when it presents in such a way.

aurantiophyllus
By: Rocky Houghtby
2014-10-14 15:43:25 EDT (-0400)

Is the closest thing this keys out to, unless you ignore the staining on the lamellae or dextrinoid reaction, but none of the alternatives fit any better. I don’t think this species is in Hesler.

I
By: Rocky Houghtby
2014-10-14 15:41:22 EDT (-0400)

I also thought it might be at first, but no conclusions about the trama can really be drawn from such a thin tangential section. The scalp section that Alan added later shows a lot of entanglement.

pileus trama…
By: Richard and Danielle Kneal (bloodworm)
2014-10-14 15:35:00 EDT (-0400)

is radial.
it presents as a pseudoparenchyma.

.
By: Rocky Houghtby
2014-10-14 14:42:36 EDT (-0400)

The interwoven pileus trama rules out aurantiophyllus. Besides that, the habit, habitat, gestalt and location all disagree with the type description for aurantiophyllus, which is caespitose on sawdust in Oregon with copious rhizomorphs.

Created: 2014-10-13 18:41:56 EDT (-0400)
Last modified: 2014-10-16 10:19:59 EDT (-0400)
Viewed: 158 times, last viewed: 2016-10-27 20:24:58 EDT (-0400)
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