Observation 20886: Pluteus sect. Pluteus

When: 2009-05-06

Collection location: Jenkinson Lake, El Dorado Co., California, USA [Click for map]

Who: Ron Pastorino (Ronpast)

No specimen available

This all white specimen was growing on fir debris/needles. The spores were salmon colored and approx. 7.5 X 5.2 microns. I’ve included photos of the spores as well as the pleurocystidia and gill trama. The rather scant references I’ve found do agree on spore size but one mentions abundant pleurocystidia (yes?) and another pleurocystidia with prominent horns. Not sure about the latter but the last photo of the gill trama(?).

[admin – Sat Aug 14 02:01:37 +0000 2010]: Changed location name from ‘Jenkinson Lake, El Dorado Co., Ca.’ to ‘Jenkinson Lake, El Dorado Co., California, USA



Proposed Names

7% (2)
Used references: Mushrooms of Northeastern North America, Bessette, by Bessette and Fischer
28% (1)
Recognized by sight: P. pellitus is a Eurasian species
Used references: Justo, A., Malysheva, E., Bulyonkova, T., Vellinga, E. C., Cobian, G., Nguyen, N., … & Hibbett, D. S. (2014). Molecular phylogeny and phylogeography of Holarctic species of Pluteus section Pluteus (Agaricales: Pluteaceae), with description of twelve new species. Phytotaxa, 180(1), 1-85.

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Eye3 = Observer’s choice
Eyes3 = Current consensus


Add Comment
Didn’t check for clamps
By: Ron Pastorino (Ronpast)
2015-03-27 08:40:06 CST (+0800)

and didn’t save, but thanks for the comments.

By: Christian (Christian Schwarz)
2015-03-27 07:45:04 CST (+0800)

The last photo definitely shows abundant and prominently horned pleurocystidia, but do you have one of the cap tissue showing clamps or lack thereof? I bet it won’t show any.

Created: 2009-05-09 04:52:04 CST (+0800)
Last modified: 2016-11-21 15:55:02 CST (+0800)
Viewed: 146 times, last viewed: 2017-11-18 07:40:34 CST (+0800)
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