Observation 164248: Boletus gertrudiae Peck

When: 2013-07-06

Collection location: Sweet Valley, Pennsylvania, USA [Click for map]

Who: Phil Yeager (gunchky)

No specimen available


Mixed woods; mainly Hickory, Ash, and some Oak.


Proposed Names

-29% (1)
Recognized by sight
94% (3)
Recognized by sight

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= Observer’s choice
= Current consensus


Add Comment
Just looked
By: Phil Yeager (gunchky)
2016-09-12 22:08:28 CDT (-0400)

at the top of the stipe and noticed yellow coloration at the apex.

Thats my plan
By: Phil Yeager (gunchky)
2014-04-28 13:57:53 CDT (-0400)

I have the exact date when I found them and its only a few hundred yards walk to reach them so it will be relatively easy to mark their growth progression. Some chemical tests will also help. I also purchased a macro lens, and hopefully my photos should be improved.

Yeah, Walt.
By: Dave W (Dave W)
2014-04-28 12:42:24 CDT (-0400)

I actually considered proposing X. affine for this one…! I’ve seen this exact cap color on affine types, and on separans.

Phil, 140284 looks like a Boletus to me, a lot like what I’d call B. nobilis from my oak/hickory spot. And this one may very well be an older version of 140284. But like I said in my last comment, as these various non-staining hardwood-loving eduloid boletes mature, the tend to look progressively alike.

If we get sufficient rainfall this summer for these large boletes to come out, it would be interesting to to leave a few young ones in the field, mark them well, and monitor developmental progress.

By: Phil Yeager (gunchky)
2014-04-28 12:26:11 CDT (-0400)

were found growing with obs. 140284. I am assuming that that are older specimens of that obs.

By: walt sturgeon (Mycowalt)
2014-04-28 11:34:48 CDT (-0400)

As usual you are a careful observer. I am seldom, if ever, confident that I have the real B.gertrudiae. The cap and pore color of this obs. reminds me of Xanthoconium.

I hunt an area…
By: Dave W (Dave W)
2014-04-28 09:00:28 CDT (-0400)

that’s about 12 miles from this collection site. The forest is also mainly oak, hickory, some ash, some maple. I find lots of B. nobilis, B. separans, and perhaps also B. gertrudiae in this area. As these mushrooms mature the types seem to become difficult to distinguish. For one, the cap colors often tend toward the combination of tan and greenish-brown not unlike what is seen here. Also, although mature nobilis and separans are allegedly separable by the colors of the pores, I wonder about the effects of in-situ partial dehydration upon the darkness of the pore surface.

Created: 2014-04-27 20:55:22 CDT (-0400)
Last modified: 2016-09-13 00:08:26 CDT (-0400)
Viewed: 125 times, last viewed: 2020-08-04 19:20:22 CDT (-0400)
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