Observation 84362: Pholiotina Fayod sect. Pholiotina
When: 2011-11-28
Who: Byrain
No herbarium specimen

Notes: Growing in wood chips, the spores are thick walled, smooth, and with a germ pore, Cheilocystidia and Pleurocystidia are hard to differentiate from the basidioles, the basidia was 4 spored or mostly so as some were hard to count and may of had less. I looked at two stipe sections for caulocystidia and found it absent.

Spore range = 10 – 12 × 6 – 7 μ
Average spore = 11.02 × 6.13 μ
Average Q = 1.8
Spores measured = 30

Images

188471
188472
December 2nd
188473
Spores, basidioles, basidia, and some pleurocystidia.
1000x
Mounted in melzers
1μ divisions
188477
Pileipellis with clamped encrusted hyphae
1000x
Mounted in KOH
1μ divisions
188478
Pileipellis
1000x
Mounted in KOH
1μ divisions
188479
Spores on stipe
1000x
Mounted in KOH
188480
Some kind of protist? On the pileipellis
1000x
Mounted in melzers
1μ divisions
188511
Cheilocystidia
1000x
Mounted in KOH
1μ divisions
188512
Caulocystidia
1000x
Mounted in KOH

Proposed Names

57% (1)
Recognized by sight
85% (1)
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Recognized by sight

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Comments

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Cheilocystidia and caulocystidia.
By: Byrain
2011-12-10 02:59:49 CST (-0500)

I looked some more, I think I found some, but neither are plentiful.

ALso on spore size.
By: Douglas Smith (douglas)
2011-12-10 01:04:01 CST (-0500)

You measured 30 spores here, that is actually over-kill, more spores isn’t going to increase the accuracy of the ave. all that much. You could stop at 15 spores really, and get just as accurate an ave. You can prove that by taking your 30 spores, and randomly selecting 15 spores from the list, and see what that ave. is, and compare with the 30 spores. If you still don’t believe, then repeat a couple times more to see how large the variation on the ave. will be. Unless you have plenty of time to measure spore sizes, it is up to you.

I’ll take another look.
By: Byrain
2011-12-10 00:59:28 CST (-0500)

Thanks for the info.

Well…
By: Douglas Smith (douglas)
2011-12-10 00:48:04 CST (-0500)

In Pholiotina there have to be caulocystidia on the stipe, so you might have to go back to that one. What you have on the gill face there is elongated basidia, with spacer cells. That is rather common in Pholiotina and Conocybe, there are sterile cells separating the basidia on the gill face. But you really need to look at the cheilocystidia on the gill edge here to be sure of what you are looking at. From the look and the spores, Pholiotina rugosa isn’t bad, but the spore size is on the large size from the desc. in Flora Agaracina Neerlandica. There is also Pholiotina vexans in that book, which is very similar to Pholiotina rugosa, but with slightly larger spores.

Created: 2011-12-09 22:31:44 CST (-0500)
Last modified: 2014-12-05 22:19:40 CST (-0500)
Viewed: 54 times, last viewed: 2014-12-14 21:27:23 CST (-0500)
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