Help with three red and yellow boletes

Please try to include photos to show all parts of the fungus, eg top, stem, and gills.
Note any smells, and associated trees or plants (eg oak, birch). A spore print can be very useful.
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Help with three red and yellow boletes

Post by Batfish » Thu Sep 06, 2018 5:19 pm

Hi all apologies for posting 3 different boletus identification requests but they were all similar yet different in key ways. All the spore prints were khaki/olive brown. I ran them through Kibby’s Bolete keys, but were never happy that what I ended up with looked like those in guidebooks and internet. All found in Hampshire.

Boletus no 1:
Found in pasture but 6 foot away from an oak tree. Cap dry and smooth and not covering the pores. It was 5cm in diameter. When handled pores bruised blue. Stipe 6cm long, bruised red near the base and when cut initially showed red, (photo 2), but turned blue after 4 minutes (photo 3). An interesting aspect which I haven’t seen before was that the secondary fungi’s cap had seamlessly fused into the cap of the larger bolete (photo 4). No idea if that is significant.

Boletus no 2: (photos 5,6 & 7)
A multitude (15 to 20) of small boletes in two lines (possible ring) found deep in mixed deciduous woods. Both cap and stipe 4-5cm diameter and length respectively – more mature specimens had cracked caps. Olive brown spore print. Stipe covered in small red spots except at the apex. Only faintest hint of bluing in cap when cut while stipe flushed modestly red.

Boletus no 3: (photos 8,9 and 10)

A pair found in mixed woodland on a steep bank by path. Again quite small with a cap diameter of 4cm on a 7cm stipe. To me it looks like a Hortiboletus rubellus, however, when cut I got no blueing.

All help and pointers gratefully encouraged and appreciated. Thanks Andrew
photo 1
photo 2
photo 3
photo 4
photo 5
photo 6
photo 7
photo 8
photo 9
photo 10

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Re: Help with three red and yellow boletes

Post by mollisia » Thu Sep 06, 2018 9:04 pm


I think you are correct with Hortiboletus rubellus or H. engelii (I cant separate these two realy ...) for the last one and also for the first one.
You can check the very stem base if they contain small orange dots in the flesh, which is a character for both species and which separate them from similar Xerocomus/Xerocomellus species.
That the last fruitbody does not blue may be explained by being somewhat dried out?

The middle one is in my opinion either Xerocomellus pruinatus (older fruitbodies) or X. chrysenteron.
The somewhat stout habit, the non-red cracks in the cap speek for pruinatus, but the strong red colouration of the stipe, the faint blueing in the cap (instead of a distinct blueing in the stipe) and the missing reddish cap margin speek for X. chrysenteron.

best regards,

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Re: Help with three red and yellow boletes

Post by Batfish » Mon Sep 10, 2018 7:59 am

Thanks Andreas, appreciated

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