Original Herbarium Label: Boletus rainisii Bessette & O.K. Mill. [shoukd be rainsiae ]
Syn.: Xerocomellus rainisiae (Bessette & O.K. Mill.) N. Siegel, C.F. Schwarz & J.L. Frank
Cyanoboletus rainisiae (Bessette & O.K. Mill.) Gelardi, Vizzini & Simonini

Herbarium Specimens:
UBC F28899 collected 2006-10-14 (this MO Observation)
UBC F29329 collected 2007-09-29 (no MO Observation, but collected at the very same spot as UBC F28899)

Described in 2000, type locality: Sol Duc River, Olympic National Forest, Washington. Mixed conifers, including Douglas-fir and western hemlock. [In British Columbia,] “Washington and possibly California”.

Alan Bessette, William C. Roody, Arleen Rainis Bessette. 2000. North American Boletes A Color Guide to the Fleshy Pored Mushrooms. Syracuse University Press.

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I wanted to delete the mispelled name (Boletus rainisii),
By: Oluna & Adolf Ceska (
2015-11-23 00:53:44 PST (-0800)

but I received this message:
“Sorry, someone else has given this their strongest positive vote. You are free to propose alternate names, but we can no longer let you delete this name.”

Re: Observation #63816 May Be Xerocomellus rainisiae
By: Oluna & Adolf Ceska (
2015-11-22 12:48:02 PST (-0800)

Why “May Be”? It is!
Boletus rainisiae Bessette & O.K. Mill., Xerocomellus rainisiae (Bessette & O.K. Mill.) N. Siegel, C.F. Schwarz & J.L. Frank, and Cyanoboletus rainisiae (Bessette & O.K. Mill.) Gelardi, Vizzini & Simonini are all synonyms and it is up to the users and their understanding of taxonomy and nomenclature which name they will use. The fungus itself does not care!
If you want to separate Boletus rainsiae into a different, narrowly defined genus, we would not know which name would better fit: Xerocomellus or Cyanoboletus? Until this question is solved, we would go for Boletus rainisiae.

Color and staining of Boletus rainisii
By: Oluna & Adolf Ceska (
2011-02-23 09:40:31 PST (-0800)

After I posted this observation, I showed it to Oluna and she said about the same. According to her, the staining did not show up well on my photos. I cannot say one way or the other: I am colorblind. Never mind, the herbarium material has been preserved as is available for a closer look. – Adolf

can’t be coniferarum…
By: Debbie Viess (amanitarita)
2011-02-23 09:34:03 PST (-0800)

which entirely lacks red tones. this bolete shows red tones at the stipe base.

not all blueing rxns. are textbook, eh? it obviously IS blueing…
B. rainisii looks like a good ID to me.

Looks like a good ID except
By: walt sturgeon (Mycowalt)
2011-02-23 09:16:57 PST (-0800)

The staining should have been more prominent. Maybe you were just fast on the draw with your camera? Great drawings.

what about
By: Noah Siegel (Noah)
2011-02-23 09:16:36 PST (-0800)

Boletus coniferarum?

I thought B. rainisii was supposed to stain dark green to greenish-black and have more olive-green colors

Neat Find and Great Info
By: Charles Seltenright Sr (Shroomin Yooper)
2011-02-23 02:53:51 PST (-0800)

I like the drawings you add to your observations.Theres alot of info and you draw alot better than I ever could.

Created: 2011-02-22 23:54:38 PST (-0800)
Last modified: 2020-07-22 20:30:35 PDT (-0700)
Viewed: 386 times, last viewed: 2020-07-27 12:53:07 PDT (-0700)
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