Observation 74835: Boletus pseudosulphureus Kallenb.

When: 2011-08-28

Collection location: Athol, Massachusetts, USA [Click for map]

Who: Walter Doyle (wdoyle1648)

No specimen available

Cap about 6.4 cm, wet and slippery (after “Irene”)
Under oak.



Proposed Names

-41% (5)
Used references: Nat’l Audubon Soc. Field Guide to N. Am Mushrooms, Lincoff

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

Eye3 = Observer’s choice
Eyes3 = Current consensus


Add Comment
Amanitarita and Curecat and all
By: Walter Doyle (wdoyle1648)
2011-08-29 17:46:41 CDT (-0500)

I still have the cap on glass trying to collect a spore print, which so far
appears to be very faint olive-brown. The cap never changed color upon bruising. The pore surface, as in original image, only showed darkening from handling. When I collected it I skimmed the back of my my fingernail over this surface several times and it never change color (like a “bicolor” does). Also, “Curecat” I really like your creativity with making the contrasty gray scale image, trying to get a better idea of the stipe’s reticulation. "Neat….!

By: Eric Smith (esmith)
2011-08-29 15:03:57 CDT (-0500)

I saw the fine reticulation at the top of the stem. Barely noticeable reticulations aren’t the coarse, prominent reticulations on R. ornatipes. No amount of weathering or decay makes it so; no matter how long one has been hunting. The bruising pore surface also doesn’t match. Yes, R. ornatipes is out in the area now; along with many other boletes. The color and texture of the cap are slightly off for R. ornatipes too.

did it blue (fading to brown) when handled?
By: Debbie Viess (amanitarita)
2011-08-29 14:52:47 CDT (-0500)

if so, it can’t be ornatipes.

pseudosulphureus shows reticulation at the stipe apex only (like this mushroom does), and also can show red or brown stains on the cap (like this mushroom does), and the pore surface is depressed near the stipe (like this mushroom also shows).

the blue staining seems to be the slam-dunk characteristic, tho. If it doesn’t or didn’t blue anywhere (cap, pores, stipe or context) it probably can’t be pseudosulphureus, either.

By: Erin Page Blanchard (CureCat)
2011-08-29 13:54:18 CDT (-0500)

Stature and colour is right for R. ornatipes, and these are very common in the area right now. I was out yesterday in Royalston, MA (neighbouring town) and saw quite a few soggy R. ornatipes. Anyway, I too see the subtle reticulation near the stipe apex, and although it should be more pronounced in this species, this specimen has seen better days, and if you have hunted mushrooms long enough you know that when they are on their way out their distinguishing features begin to fade and erode.
Anyway… I adjusted a few things in the image to try to make the subtle spiraling reticulation that I see at the apex more obvious.

B. curtisii
By: Patrick Harvey (pg_harvey)
2011-08-29 12:32:49 CDT (-0500)

is also yellow all over, and top is sticky/shiny

Probably R. ornatipes after
By: Ron Pastorino (Ronpast)
2011-08-29 10:02:53 CDT (-0500)
a good soaking by Irene.
This mushroom
By: Eric Smith (esmith)
2011-08-29 08:29:25 CDT (-0500)

lacks the prominent reticulation on the stipe that R. ornatipes has. Also, R. ornatipes doesn’t bruise on the pore surface. I don’t know what this is. Boletus, maybe Suillus?

Created: 2011-08-28 18:02:39 CDT (-0500)
Last modified: 2011-10-06 11:16:19 CDT (-0500)
Viewed: 187 times, last viewed: 2017-06-09 19:55:48 CDT (-0500)
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