Observation 136643: Entoloma subgenus Leptonia (Fr. : Fr.) Noordel.
When: 2013-06-16
(35.6695° -84.2371° 259m)

Notes: On compact soil on the center of trail in mixed hardwood forest with Acer, Carya, Quercus, Liriodendron tulipifera, Cornus florida, Juglans nigra, etc

Very small fruitbodies – Cap diameter 0.5-1.0 cm
Spores 8.6 × 6.9 microns

Images

338367
338368
338801
Most basidia were 1-sterigmate!
338802
Basidia stand out when mounted in Melzer’s!
338803
This is a scalp section of the pileipellis, it doesn’t look like anything. Melzer mount, 40x objective
338804
I think these might be cheilocystidia?
338805
I think these might be cheilocystidia?
338806
I think these could be pleurocystidia but maybe they are just basidioles?
338807
I think these could be pleurocystidia but maybe they are just basidioles?
338808
Spores in water (first two images), and in Melzer (last image)
338809
Spores in water (first two images), and in Melzer (last image)
338810
Spores in water (first two images), and in Melzer (last image)
338811
stipitipellis, no caulocystidia, no clamps. KOH mount.
338812
stipitipellis, no caulocystidia, no clamps. KOH mount.

Proposed Names

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Eye3 = Observer’s choice
Eyes3 = Current consensus

Comments

Add Comment
Entoloma microscopy
By: Christian (Christian Schwarz)
2013-06-18 07:20:12 PDT (-0700)

The cheilocystidia-like basidioles on many Leptonia is a common problem.
In general I don’t really apply the term unless they form a continuous sterile band or project really significantly beyond the basidia, or if they have different pigmentation or an unusual shape. But it’s good to keep in mind that past workers may very well have called them cheilocystidia, and not to make or break and ID based on that feature.

As for the pileipellis, scalp sections are not as useful in Leptonia as a very thin radial section that includes a little of the tissue over the very center of the cap.

Thanks for the excellent microphotos!

Images and measurements
By: Christine Braaten (wintersbefore)
2013-06-18 07:05:00 PDT (-0700)

added. I’m not sure if the clavate structures on the gill edge and gill face were even cystidia at all, I guess they could be basidioles?

Brian
By: Martin Livezey (MLivezey)
2013-06-16 23:06:48 PDT (-0700)

We will be watching!

Magic portal
By: Brian Looney (GibbiPicasso)
2013-06-16 22:20:47 PDT (-0700)

I swear!

More data
By: Christine Braaten (wintersbefore)
2013-06-16 17:23:00 PDT (-0700)

I’ll upload some microscopic images and measurements tomorrow. I’d be glad for you to key it out. Thanks.

Wow real neat one!
By: Christian (Christian Schwarz)
2013-06-16 17:09:11 PDT (-0700)

Some pileipellis and spore data/ presence of cheilocystidia will help. I’d be happy to look at the specimen and compare it to my eastern literature.

Created: 2013-06-16 16:50:40 PDT (-0700)
Last modified: 2014-05-24 11:19:15 PDT (-0700)
Viewed: 70 times, last viewed: 2016-10-22 20:02:29 PDT (-0700)
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