Observation 61543: Lactarius subflammeus Hesler & A.H. Sm.

When: 2010-12-30

Collection location: Point Reyes National Seashore, Marin Co., California, USA [Click for map]

Who: Ron Pastorino (Ronpast)

Specimen available

These were growing near Bishop Pine and were fairly small, with the largest having a cap 5 cm across. They were growing in the same area of MO #6310.
The white milk was copious and did not change color nor stain the gills.
The taste was slightly bitter with time.
The spore print was white and they were ~ 8.0-8.5 X 7.0-7.6 microns.
I’ve included some photos of the Pileipellis and what appears to be some Aculeate Seta Cheilocystidia(?).
Lactarius subflammeus seems reasonable but not everything seems to match up perfectly.

Species Lists


Cap Cuticle
Below cap cuticle

Proposed Names

48% (4)
Eye3 Eyes3
Used references: Milk Mushrooms of North America by Alan Bessette, David Harris & Arleen Bessette
Mushrooms Demystified by David Arora
-1% (2)
Recognized by sight: similar macro to subflammeus.
Used references: Bessettes, “Milk Mushrooms of North America”
Based on microscopic features: spore ornamentation forms a partial reticulum
Based on chemical features: latex with latently acrid taste.

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Eye3 = Observer’s choice
Eyes3 = Current consensus


Add Comment
Lactarius subflammeus vs Lactarius luculentus
By: Ron Pastorino (Ronpast)
2011-01-02 14:05:35 CST (-0500)

One can make an argument for either for this collection but one of the reasons that I went with L. subflammeus was that the spore print was pure white whereas the Bessettes note that one of the differences between the two is that L. luculentus has a buff-colored spore print. Also, despite the pictures in the book, the cap colors for the L. subflammeus are described as scarlet to orange and duller with age. For the L. luculentus, the colors are described as going from ochraceous-tawny to ochraceous buff to tawny or reddish cinnamon. These are young and the colors are quite bright.
Since these are near pure stands of Bishop Pine and not Douglas Fir(the reported habitat for L. luculentus), I added that factoid to my tentative ID decision.

By: caphillkid
2010-12-31 13:47:39 CST (-0500)


Created: 2010-12-31 11:21:00 CST (-0500)
Last modified: 2011-01-02 14:12:29 CST (-0500)
Viewed: 126 times, last viewed: 2018-05-01 16:33:11 CDT (-0400)
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