Observation 153389: Pluteus primus Bonnard

Growing on the ground, spruce debris/needles.
Caps up to 5.9 cm across.
Spores print a dark salmon.
Spores ~ 7.1-8.9 X 5.5-6.1 microns and smooth.
Plenty of gill cystidia, horned and thin-walled.
Can’t seem to find a good detailed description for Pluteus magnus but these appear to match the macro characteristics for that species.



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-60% (2)
Recognized by sight
50% (2)
Recognized by sight
63% (4)
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Thanks Fredo and Martin…
By: Ron Pastorino (Ronpast)
2013-11-22 04:43:39 CET (+0100)
I’m from the school where I rather have a concrete “Promising” species name over a “group” name. Now if I can muster up one more vote for “Pluteus primus”…..
Great work Ron and Alfredo!
By: Martin Livezey (MLivezey)
2013-11-22 04:27:01 CET (+0100)
in the pouzarianus group
By: Alfredo Justo (Fredo)
2013-11-22 00:23:10 CET (+0100)

considering the habitat(on the ground, spruce debris/needles), the spore size, the presence of clamps and the general geographic area Pluteus primus is the most likely candidate

OK Alfredo, I’ve added three photos
By: Ron Pastorino (Ronpast)
2013-11-21 23:55:41 CET (+0100)

of what I’m calling clamp connections that I found on the pileipellis.

It’s interesting(and somewhat discouraging) that one of the few distinct Pluteus that we have on the west coast doesn’t have a proper name.

Hi Ron
By: Alfredo Justo (Fredo)
2013-11-21 14:58:18 CET (+0100)

see the comments about the usage of the name Pluteus magnus here: http://mushroomobserver.org/21099

check for clamp-connections on the pileipellis, that will narrow down the possibilities

Created: 2013-11-21 04:38:21 CET (+0100)
Last modified: 2015-03-20 20:28:14 CET (+0100)
Viewed: 105 times, last viewed: 2018-02-19 07:02:14 CET (+0100)
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