Observation 82946: Tricholoma subsejunctum Peck



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Work on North American Tricholoma
By: Drew Parker (mycotrope)
2011-11-22 22:55:14 EST (-0500)

including their relationship to european taxa, is currently ongoing by Karen Hughes at the U. of Tennesee, and Clark Ovrebo of the U. of Central Oklahoma. I don’t know when to expect the completion of the work.

Peck’s subsejunctum
By: Irene Andersson (irenea)
2011-11-22 04:51:57 EST (-0500)

has been interpreted as a synonym to the european viridilutescens. It differs from sejunctum by growing with conifers, and more green colours on the cap. Usually more slender and more viscid cap too.
This looks very much like viridilutescens, but since I doubt that they are identical species, I chose to suggest the american name subsejunctum.

It is true that this group is badly in need of revision..

By: Drew Parker (mycotrope)
2011-11-21 20:34:18 EST (-0500)

It’s doubtful that the separation of subsejunctum and sejunctum will be maintained since the only significant difference is the darkness of the fibrils on the pilius, which thoroughly intergrade. It’s true that our T. sejunctum may turn out to be different than the European T. sejunctum, or it may be a complex of new species. As Irene has stated before, this group of Trichs is a mess in need of sorting out. Once that happens, and that work is ongoing, our North American species we call sejunctum/subsejunctum may be found to be separate from the European sejunctum. If so, subsejunctum may be the appropriate name for the NA species, but for now it seems prudent to consider T. subsejunctum a synonym of T. sejunctum.

I wonder if these on the west coast
By: Ron Pastorino (Ronpast)
2011-11-21 17:51:36 EST (-0500)

should actually be called T. sejunctum?

Created: 2011-11-21 10:01:34 EST (-0500)
Last modified: 2013-12-01 16:05:17 EST (-0500)
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