Observation 50866: Pluteus thomsonii (Berk. & Broome) Dennis
When: 2010-08-13
Herbarium specimen reported

Notes: Found under mixed hardwoods, mostly oak and beech

Adding some micro-details:

The first micro-shot is of the gill edge at 400x in KOH. The cheilocystidia are lageniform, with these funny long pointed extensions, most with these nodules in the necks. Pleurocystidia were also obs, but were not numerous, which was kinda strange for a Pluteus.

The second micro-shot is of the cap surface at 400x in KOH. The cap surface is hymeniform, with slightly randomized elements, from globose to lageniform, some with long narrow extensions.

The third micro-shot is of spores from the gills at 1000x in KOH. These are just the usual boring Pluteus spores, subglobose to ellipsoid, smooth, without a germ pore. The apr. size is 7 × 5.5 um.

With the pointed extensions in the cystidia, and the random surface elements, this seems to clearly be P. thomsonii.

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Comments

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Amazing
By: Christian (Christian Schwarz)
2010-09-22 23:25:24 CDT (-0400)

how much the cap pattern looks like some Rhodotus palmatus

Created: 2010-08-20 07:21:59 CDT (-0400)
Last modified: 2010-08-27 15:33:02 CDT (-0400)
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