Observation 64942: Lactarius Pers.

When: 2011-03-30

Collection location: Mendocino, Mendocino Co., California, USA [Click for map]

Who: Ryane Snow (snowmam)

No specimen available


Proposed Names

20% (3)
Recognized by sight: found under Monterey pine on the immediate coast; quite peppery taste; copious unchanging white latex; white spore print 4 × 6 microns
55% (1)
Recognized by sight
22% (2)
Based on chemical features: cap turns olive green with 5% KOH

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= Observer’s choice
= Current consensus


Add Comment
By: Irene Andersson (irenea)
2011-03-30 12:21:57 CDT (-0400)

you have Lactarius rufus in California, this might well be it, just somewhat dry specimen. It’s only the edges of the gills that have turned brownish.

By: Christian (Christian Schwarz)
2011-03-30 12:17:52 CDT (-0400)

The concepts are completely confused.
From Methven in Agaricales of CA:

gills pale orange
stalk surface glabrous, brownish orange.
spore print white to pale yellow

The spores are a bit small still…
But it could is “L. rufus”… sensu Methven in CA

The same reference lists the white latex of L. hepaticus (a “Rockies, East Coast and European” entity)
as changing to yellow – is that the case with this collection? It doesn’t look like the same species as Damonbrunette’s observation from NY…

Here’s Russulales News very dependable photography:

not rufus…
By: Debbie Viess (amanitarita)
2011-03-30 12:03:56 CDT (-0400)

according to the Bessettes’ “Milk Mushrooms of North America” description:
gills "whitish, becoming vinaceous buff-vinaceous tan with age.
stalk: “with whitish bloom at first, then same color as cap, white at base.”
spore deposit: “cream to yellow”
spore size: “8.5-12 × 6-8 microns.”

Created: 2011-03-30 11:25:19 CDT (-0400)
Last modified: 2019-06-27 18:17:33 CDT (-0400)
Viewed: 64 times, last viewed: 2020-06-28 20:35:04 CDT (-0400)
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