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.

Proposed Names

57% (1)
Eye3 Eyes3
Used references: Milk Mushrooms of North America by Bessette, Harris & Bessette

Please login to propose your own names and vote on existing names.

Eye3 = Observer’s choice
Eyes3 = Current consensus


Add Comment
Lactarius olympianus is found in Colorado
By: Ron Pastorino (Ronpast)
2010-08-18 14:52:14 HST (-1000)

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)
2010-08-17 20:06:32 HST (-1000)

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 13:46:47 HST (-1000)
Last modified: 2012-09-20 12:00:23 HST (-1000)
Viewed: 50 times, last viewed: 2017-09-02 18:04:39 HST (-1000)
Show Log