Observation 170701: Neoboletus pseudosulphureus (Kallenb.) Klofac

When: 2014-07-20

Collection location: Salmon River State Forest, Westchester, Connecticut, USA [Click for map]

Who: Bill (boletebill)

Specimen available

this resembles an all yellow form of Boletus sensibilis. Curry smell, shallow tubes that bruise blue fade to dull brown, flesh bruises blue…this looks like the image in Bessette for B. pseudosulfureus but I can’t find any mention of the distinct curry smell for that, now can I find any reference to an all yellow for of B. sensibilis. I’ve seen this 3 times in 20 years in CT.

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On the curry smell…
By: Scott Pavelle (Scott Pavelle)
2016-07-21 01:36:19 JST (+0900)

I read that Mushroom Expert article on bicolors that Walt linked to with close attention. Among other things, Kuo blows up “curry smell” as a distinctive feature. He says that mushrooms he could 100% identify as bicolors might have that smell while proven sensibilis might not.

To me that says curry smell is something created by a combination of environmental factors and native chemicals in the mushroom. Sensibilis may have more of those chemicals and thus be more prone to curry smell than other boletes, but the same thing can occur elsewhere if the environmental factors are particularly acute. What those environmental/other factors might be… I have no clue, but suspect that you guys might just from long experience.

Translating to this case, the curry smell might be more or less common in particular specimens depending on factors we can’t see. We’re there any environmental features of note for this find? Particularly dry ground? Other flora in the area? Unusual rainfall pattern?

This is the sort of stuff I was hoping to mine from you all because it’s the sort of condensed esperience that doesn’t make it into field guides.

If you have a sample set aside,…
By: Scott Pavelle (Scott Pavelle)
2016-07-21 01:25:27 JST (+0900)

…mark the NBC box so we can adverise it for DNA testing. And please add photos of the spores is you did microscopy. That would be really cool to see. Plus any ther photos, of course.

By: walt sturgeon (Mycowalt)
2016-07-21 00:15:42 JST (+0900)

I have only one site for this and I don’t recall noting a bouillon or curry odor. Also there may be more than one species using this name, one reticulate and one not or as in some other species reticulations may not be critical as an ID feature. See http://mushroomobserver.org/106340?q=1Jy9e
Your collection looks like it has the possibility of becoming reticulate.

I agree with B. pseudosulphureus…
By: Bill (boletebill)
2014-07-23 21:04:11 JST (+0900)

after checking the spores, doing KOH test(orange) and observing the base of the stipe turn red over two days, all agree with literature on pseudosulfueus.

so Walt pseudosulfureus is what Ive called this since I first saw it about 10 years ago but…
By: Bill (boletebill)
2014-07-21 11:40:14 JST (+0900)

…this mushroom has the exact same smell as Boletus sensibilis and I can’t find anything to confirm that pseudosulfureus has that odor…so have you encountered this one Walt?

Created: 2014-07-21 08:22:39 JST (+0900)
Last modified: 2016-07-21 05:29:07 JST (+0900)
Viewed: 95 times, last viewed: 2017-08-18 22:56:29 JST (+0900)
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