Observation 143251: Lactarius affinis Peck

When: 2013-08-18

Collection location: Perry, Maine, USA [Click for map]

Who: Terri Clements/Donna Fulton (pinonbistro)

No specimen available

Cap up to 45 mm., pink brown with darker brown spots that look like pot holes under the hand lens, sticky, sunken center, paler inrolled margin, thick pallid flesh. Gills pink buff, crowded, narrow, attached. Stem sticky,hollow, color of gills, up to 40 mm. × 20 mm., tapered at apex and base, white mycelia at base of stem. Peppery white latex, non-staining. Pleasant odor, taste mildly hot. In moss on/near rotten wood in mixed woods.



Proposed Names

29% (1)
Recognized by sight
57% (1)
Eye3 Eyes3
Used references: as described by M. Kuo on his website: Lactarius affinis…… as described by its original author (Peck, 1872) and by Hesler & Smith (1979) is yellowish brown without any hints of lilac, has a stem that lacks potholes, and has white milk that does not turn green (additionally it appears to favor hardwoods and has a slightly wider geographic range).

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Eye3 = Observer’s choice
Eyes3 = Current consensus


Add Comment
By: Terri Clements/Donna Fulton (pinonbistro)
2013-10-28 17:38:13 EDT (-0400)

If I read this correctly, this variety is closely related to L. trivialis but w/o the green staining: Kuo, M. (2011, February). Lactarius affinis var. viridilactis. Retrieved from the MushroomExpert.Com Web site: http://www.mushroomexpert.com/...


By: Irene Andersson (irenea)
2013-08-21 01:43:42 EDT (-0400)

mucidus sounds like a very good idea. I wouldn’t be surprised if it’s a close relative to the ones I mentioned.

Thanks, Irene
By: Terri Clements/Donna Fulton (pinonbistro)
2013-08-20 21:16:25 EDT (-0400)

for your comment. I plan to return to the area where I collected these to see if I can find some fresh specimens. The milk did not stain and it was peppery but I’d like to see it and taste it again. L. mucidus var. mucidioides seems to fit as well except that the white milk drys pale green and stains the gills gray-green.


By: Irene Andersson (irenea)
2013-08-20 14:16:23 EDT (-0400)

an awful lot of the european Lactarius trivialis – or its close relative Lactarius utilis which is brown from a young stage (but without spots..).
One important character they have is white latex that turns greyish green on drying.

Any ideas
By: Terri Clements/Donna Fulton (pinonbistro)
2013-08-20 09:44:49 EDT (-0400)

on this would be appreciated. The latex and brittleness of the cap and stem suggest Lactarius but the gills were soft not brittle. The cap and stem were still very sticky the next morning after collecting the specimens and the hollow clavate stipe (even in the immature FB’s) seem significant along with the brown spots/pits adorning the cap surface.

Created: 2013-08-19 13:46:23 EDT (-0400)
Last modified: 2013-10-28 17:35:05 EDT (-0400)
Viewed: 83 times, last viewed: 2018-05-01 12:58:55 EDT (-0400)
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