Observation 80789: Leccinum aurantiacum (Bull.) Gray

When: 2011-09-29

Collection location: Finland [Click for map]

61.113085° 28.595222°

Who: miked_ispot

No specimen available

In an area with aspen, birch, pines and Picea. There were Leccinium versipelle about 40m away. these specimens shown in photo had no particular taste.



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Leccinum characters
By: Irene Andersson (irenea)
2011-10-27 23:17:24 PDT (-0700)

This particular group of Leccinum species have flaps of exceeding cap cuticle along the margin, clearly visible in your picture. Tylopilus doesn’t have them.

It’s not that long ago, that it was made clear that there were two different red-capped leccinums growing with aspen. They used to be lumped together under the name aurantiacum, at least here in Sweden.. I’m pretty sure that you have albostipitatum in UK as well.

Interesting, thanks.
By: miked_ispot
2011-10-27 13:44:01 PDT (-0700)

Interesting, thanks, have added a more zoomed in version of the stem on that http://www.ispot.org.uk/node/227061
In Dutch key the couplet that separates Leccinum albostipitatum and L. aurantiacum talks about the colour of stem squamules and pileus. Unfortunately L. albostipitatum matches for the squamules but L. aurantiacum matches for cap colour. Pictures I have seen of L. albostipitatum tend to show it having a much brighter cap than the specimens I found in Finland and back home here in UK (actually I am not sure that L. albostipitatum occurs in UK unless there has been a name change).
Is there a good way to separate Leccinum and Tylopilus, there does not appear to be any pinkish hint on the specimen but are there other characters visible here?
After asking this question had a look around and it seems that Tylopilus is scattered around on the Boletus family tree(molecular) not in a nice clade together so it may not have any nice distinguishing characters however Leccinum does seem to be a good genus so might have suitable distinguishing characters to separate it out.

The link
By: Irene Andersson (irenea)
2011-10-27 13:03:49 PDT (-0700)

shows something that looks more like Leccinum albostipitatum (grows with aspen too). L. aurantiacum has duller colours and much more brown on the stipe.

irenea, why do you think its L. aurantiacum?
By: miked_ispot
2011-10-27 12:28:13 PDT (-0700)

irenea, why do you think its L. aurantiacum? We did find this species a few miles away e.g. http://www.ispot.org.uk/node/227061
but it looks so different to the current observation even if you imagine the specimens are past their best.

Its quite a high res image that you can zoom in on
By: miked_ispot
2011-10-27 01:25:01 PDT (-0700)

Its quite a high res image that you can zoom in on however the stem is not fully sharp so you can see some detail but not full detail. did not have any KOH with me.

By: Alan Rockefeller (Alan Rockefeller)
2011-10-26 18:43:24 PDT (-0700)

There is a Tylopilus that grows around Guadalajara that tastes sweet. Many are bitter though. The ones with no taste are edible I guess. This also could be a Leccinum. Macro pics of the stem would help with identification. Also KOH tests.

I see that there are some Tylopilus that do not taste horrible
By: miked_ispot
2011-10-26 14:05:47 PDT (-0700)

I see that there are some Tylopilus that do not taste horrible although most have some kind of pinkish tinge to the pores which these specimens do not.

Are there any Tylopilus that do not taste horrible?
By: miked_ispot
2011-10-26 12:12:57 PDT (-0700)

Are there any Tylopilus that do not taste horrible?

Created: 2011-10-26 11:04:25 PDT (-0700)
Last modified: 2011-10-28 09:15:08 PDT (-0700)
Viewed: 183 times, last viewed: 2018-05-13 20:10:43 PDT (-0700)
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