Observation 50570: Lactarius olympianus Hesler & A.H. Sm.

When: 2010-08-14

Collection location: Fraser Experimental Forest, Grand Co., Colorado, USA [Click for map]

Who: Ron Pastorino (Ronpast)

No specimen available

These were tentatively id’d at the 50th NAMA Foray.
The latex was white and the taste was acrid.
However, the cap color is a little darker orange than the pictures and description in the Bessette book. Also, while the spore ornamentation seems OK, my measurement of the spores make them a little wider and a little longer. ~9.5-13.0 X 9.0-10.0 microns.



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Used references: Milk Mushrooms of North America by Bessette, Harris & Bessette

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Lactarius olympianus is found in Colorado
By: Ron Pastorino (Ronpast)
2010-08-18 20:52:14 EDT (-0400)

according to the new “Milk Mushrooms of North America” by Bessette et al.
Lactarius rufus usually has orange and brown on the stem and the spores are thinner.
And while I saw a similar mushroom ID’d as L. olympianus, these could well be something else.

Did you try…
By: Douglas Smith (douglas)
2010-08-18 02:06:32 EDT (-0400)

Did you see if these match well the description for L. rufus? What about these makes the id for L. olympianus? (Which I thought was a fairly rare mushroom from western Washington, and wouldn’t that be strange to find in CO?)

Created: 2010-08-17 19:46:47 EDT (-0400)
Last modified: 2012-09-20 18:00:23 EDT (-0400)
Viewed: 54 times, last viewed: 2018-10-07 12:36:54 EDT (-0400)
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