Observation 18907: Caloboletus marshii D. Arora, C.F. Schwarz & J.L. Frank

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

Eye3 = Observer’s choice
Eyes3 = Current consensus


Add Comment
Need more details on the names…
By: Nathan Wilson (nathan)
2009-04-28 14:56:06 CDT (-0400)

Right now, following “All That the Rain Promises…”, I have B. “marshii” as deprecated in favor of B. albidus. Let me know the arguments for the other names (or better yet add them to the various name pages), and we’ll get this sorted out.

Actually B. “marshii” is in the database
By: Administrator (admin)
2009-04-28 01:53:45 CDT (-0400)

It’s just surrounded by quotes to indicate that it’s not been formally published.

the “radicating” base of radicans appears to be a not always present feature…
By: Debbie Viess (amanitarita)
2009-02-28 11:26:55 CST (-0500)

check out this link to European material…http://www.amo-nantes.com/Files/boletus_radicans.jpg

and even tho Christian’s photo is not clear enough to show the presence or absence of stipe reticulation, Arora’s description of “marshii” does mention a smooth stipe as one of its consistant features. So, I concur…let them use “marshii” as the species name for this handsome bolete! Please make it so, Nathan…

Check the real Boletus radicans…
By: Dimitar Bojantchev (dimitar)
2009-02-27 22:45:29 CST (-0500)

It has some little reticulation on the upper stipe at age. My
fruitbodies all showed a (sub-) radicating stipe. B. “marshii” does
look closely related, including the Oak affinity, but I can’t quite
see it the same. Check out other collections on Google. Some have
lighter, some darker and aerolate caps at age.


D. http://www.mushroomhobby.com
No kidding… Why is B. “marshii” deprecated?
By: Dimitar Bojantchev (dimitar)
2009-02-27 22:12:58 CST (-0500)

Has someone positively identified the Santa Cruz material as the
European Boletus radicans? Not to mention that B. albidus (Roques)
does not seem to be a valid name either.

By: Gerhard Koller (Gerhard)
2009-02-27 22:11:13 CST (-0500)

and it looks like B.radicans indeed! Yes, B.albidus and B.radicans are the same as Debbie stated. And this picture looks like B.radicans in all aspects but I’m convinced it is not our European species though … as is the case with every other North American bolete. I will post the real Boletus aereus tomorrow which now is re-named in America Boletus rexvernis. And compare Boletus reticulatus resp.aestivalis with your variipes which I personally have seen in North Carolina. Very close but not identically. And so it is the case with all of ’em.
There is also no European B.regius in the U.S. or B.edulis (this maybe introduced as Suillus lakei is introduced with Pseudotsuga in Europe).
Future DNA analyses will show the truth.

B. marshii
By: Christian (Christian Schwarz)
2009-02-27 20:52:43 CST (-0500)

…is the name I think best for it (for record keeping purposes), but MO doesn’t recognize it. It is one and the same as B. marshii in MD.

Then why not Arora’s B. “marshii” (Ben’s Bitter Bolete)??
By: Dimitar Bojantchev (dimitar)
2009-02-27 16:54:26 CST (-0500)

Ok then, we’re in the Calopodes area. Then why not Arora’s B. marshii?
I have never seen it myself, so just a guess.

I have hard time accepting B. radicans (=B. albidus), as I was pleased
to see it personally last year. I’d like to see more pictures of your
material at age. I will post my B. radicans photographs at some point
when I have time & energy.

Christian, you guys have all kinds of things in Santa Cruz, as if
someone planted them there on purpose, just to make the rest of the
Bay Area look stupid. Nice find though, never seen anything like
it. Remember, you show my your spots there, the drinks are on
me… I’m decisively tired of the Oakland Hills…

As pale and bitter as H.P. Lovecraft…
By: Christian (Christian Schwarz)
2009-02-27 16:15:06 CST (-0500)

I’m a bit surprised at the reaction to this observation – these are fairly common on Campus, fruiting in warm, dry weather just before the first rain. Is this not the case in the rest of the Bay Area?

The taste is exceedingly bitter, and there’s no red on the cap; it only turns dingy gray or tan-brown (as can be seen from the single splotch on the larger specimen).

And no reticulations on the upper stipe…

As for a dried specimen, there is one, but it’s in poor shape.

Key question: taste?
By: Dimitar Bojantchev (dimitar)
2009-02-27 13:07:25 CST (-0500)

Great find! I’ll step back and let ‘bythenumbers’ take the main
stage here, as he knows these much better than me, but it seems
that the taste bitter +/- can be huge as a diagnostic feature
here. That defined whether we’re looking at the Appendiculati
(regius & alies), or Calopodes (calopus et all). And that’s a
better position to drive the specie name from…

D. www.mushroomhobby.com
Could it be
By: Irene Andersson (irenea)
2009-02-27 11:53:33 CST (-0500)

some red behind that white cover on the cap? Boletus regius..?

very cool, Christian! Too bad you didn’t save it…
By: Debbie Viess (amanitarita)
2009-02-27 10:23:56 CST (-0500)

albidus (now radicans according to several sources) is primarily a European species, altho Ernst Both has reported it from mid to eastern Canada and south from Michigan to Maine. The macro characteristics of your mushroom look like a pretty good match for radicans, altho w/out the hard evidence…

The big bolete book from the Bessettes (and Roody) as well as Thiers’
“CA Mushrooms: A Field Guide to the Boletes” don’t list it as occuring here in N. America at all, by either name.

Created: 2009-02-27 03:43:54 CST (-0500)
Last modified: 2014-10-27 16:01:03 CDT (-0400)
Viewed: 273 times, last viewed: 2016-10-27 04:28:16 CDT (-0400)
Show Log