Observation 82452: Porphyrellus porphyrosporus var. olivaceobrunneus

When: 2011-11-13

Collection location: Tomales Bay State Park, Marin Co., California, USA [Click for map]

Who: Darvin DeShazer (darv)

No specimen available



Proposed Names

77% (3)
Eye3 Eyes3
Recognized by sight: Reticulated stalk
Used references: Wolfe, Carl B. 1979. Austroboletus and Tylopilus Subgenus Porphyrellus With Emphasis on North American Taxa: Bibliotheca Mycologica Band 69. J. Cramer, Vaduz, Germany. 148p.
55% (1)
Recognized by sight: If this turns out to be a different species than the spruce associated species in northern CA/PNW; Porphyrellus atrofuscus is the likely name. (described from Pt Reyes). What doesn’t show up in Darvin’s photos well is the distinctly olive color these have. As well as growth with pine, and more reticulated stipe than the spruce one. There is still debate over using the name P. olivaceobrunneus (described from the OR coast) for the PNW species, over the European name P. porphyrosporus.

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Eye3 = Observer’s choice
Eyes3 = Current consensus


Add Comment
adding to the comment;
By: Noah Siegel (Noah)
2015-03-16 16:06:09 PDT (-0700)

This one muddies the water; There is a population growing with pine in northern Sonoma Co/southern Mendocino county that appear to be the same as the northern form. http://mushroomobserver.org/3915

So we can’t say one is with spruce and one with pine…

Created: 2011-11-13 20:31:42 PST (-0800)
Last modified: 2015-03-16 16:02:45 PDT (-0700)
Viewed: 168 times, last viewed: 2018-04-12 13:48:39 PDT (-0700)
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