Observation 51838: Lactarius chelidonium Peck

When: 2010-09-01

Collection location: Forest near Elgin St., Pembroke, Ontario, Canada [Click for map]

45.809822° -77.139924°

Who: Paul Derbyshire (Twizzler)

No specimen available

Actually I’m not sure what the hell this is. Hand-sized, brown, funnel-shaped, pale stipe. Brittle indicates Russulales. Stipe snapped off with handling and inside is discolored greenish. I snapped a piece of cap edge off to check for latex and didn’t get any, but I did get a strong, within-seconds bluing reaction in the cap flesh.

Definitely a new one on me. Tentatively treating this as a maybe-dried-out Lactarius.

Species Lists


Gills on uprooted one turned green after nine days. Consistent with L. chelidonium.

Proposed Names

29% (1)
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Eye3 = Observer’s choice
Eyes3 = Current consensus


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Good call. That fits to a ‘T’, including habitat.
By: Paul Derbyshire (Twizzler)
2010-09-01 20:45:16 PDT (-0700)

The two most abundant species in Zone 04 are exactly Pinus strobus and P. resinosa — the white and red pine mentioned on Kuo’s site. So we can add Ontario to Quebec, Michigan, Massachusetts, and Illinois as part of its known range.

Created: 2010-09-01 19:14:33 PDT (-0700)
Last modified: 2011-02-10 11:12:31 PST (-0800)
Viewed: 80 times, last viewed: 2017-10-31 17:58:40 PDT (-0700)
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