Observation 103097: Lactarius griseus Peck

When: 2012-07-23

Collection location: Clear Brook, Lincoln, New Hampshire, USA [Click for map]

Who: Debbie Viess (amanitarita)

Specimen available

on ground in moss.


note pink spores drop on stipe

Proposed Names

-86% (1)
Recognized by sight: former Leptonia sp; small size, dimpled cap, slightly decurrent gills, pinkish spores.
91% (2)
Eye3 Eyes3
Recognized by sight: Small lactarius on well rotted mossy wood, around birch.

Please login to propose your own names and vote on existing names.

Eye3 = Observer’s choice
Eyes3 = Current consensus


Add Comment
The white band
By: Roy Halling (royh)
2012-07-29 08:14:29 MST (-0700)

at the apex of the stipe is a good field character for L. griseus, as well as a habit of growing amongst moss.

We do know quite a bit about N. American lactarii. How they might sort in a phylogenetic context is a different matter however.

By: Debbie Viess (amanitarita)
2012-07-29 07:55:25 MST (-0700)

just what I wrote Bart privately, and why I ended up calling them “quasi-pink spores” a couple of messages back.

I see no sign of pink spores on it…
By: Noah Siegel (Noah)
2012-07-29 07:14:26 MST (-0700)

I see creamy-pinkish gills, a common occurrence on older L. griseus. I also see pinkish staining/discoloration on the stipe, something else that griseus does.

Good to see you posting on MO Bart, we are still holding you a spot at NAMA in CA…

pink-spored ?
By: Bart Buyck (notoleuca)
2012-07-29 04:24:25 MST (-0700)

Hello Debbie, Lactarius griseus may be correct, and its systematic position is still not certain (the only sequence on Genbank puts it close to L.glyciosmus, L.vietus and allies) but the pink spore print is somewhat startling… it is mentioned from Canada with a more yellowish spore print… we know so little about American mikcaps.

I’ll be hornswaggled!
By: Debbie Viess (amanitarita)
2012-07-27 10:54:00 MST (-0700)

You are right. This tiny quasi-pink-spored mushroom is indeed a Lactarius, with amyloid ornamented spores.

Damn, you sure wouldn’t guess from the macro (at least w/out prior experience) with this very odd, leptonia-like form.

Is this species one of the Lactarius outliers?

Yes Debbie
By: Noah Siegel (Noah)
2012-07-27 10:35:02 MST (-0700)

Based on what is visible in your photos this is Lactarius griseus

After you scope it you probably will agree…

uh Noah…
By: Debbie Viess (amanitarita)
2012-07-27 10:30:37 MST (-0700)

are you really calling this thin-fleshed, pink spored mushroom a Lactarius????

my scoping for several specimens will have to wait for a few days.

Scope it;
By: Noah Siegel (Noah)
2012-07-27 10:11:15 MST (-0700)

It will take ten seconds to settle it…

you got the wrong sighting, Noah.
By: Debbie Viess (amanitarita)
2012-07-27 10:08:39 MST (-0700)

Created: 2012-07-27 09:58:03 MST (-0700)
Last modified: 2012-07-27 10:54:15 MST (-0700)
Viewed: 157 times, last viewed: 2017-11-06 06:57:02 MST (-0700)
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