Observation 208511: Leccinum sect. Leccinum

When: 2015-07-02

Collection location: Laurelville, Pennsylvania, USA [Click for map]

Who: John Plischke (John Plischke)

No specimen available

blue bruising on stem, very faintly that was already there. It would not blue for me. under birch and beech and tulip poplar. The pores bruised brownish

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By: I. G. Safonov (IGSafonov)
2015-07-02 21:15:40 MST (-0700)

I think this is pretty much what I see for the Pine Barrens Leccinum (strong vinaceous-pink, then violet then finally almost black, but the staining action is very quick; the tubes stain pink, too). Some specimens have turquoise or aquamarine stains on the lower stipe/base.
I am having difficulty with interpreting the color of the initial staining, so I don’t know if yours and mine belong to stirps Aurantiacum or stirps Insigne in the sense of Smith & Thiers.
I found some today and will be posting later.
M. Kuo will be visiting our club in October. As you know he is working on the NA Leccinum phylogeny. I am sure he would be interested in your samples.

By: John Plischke (John Plischke)
2015-07-02 21:02:48 MST (-0700)

insides stained slowly. It some pink that turned reddish or violaceous then then blackish. I put 12 of them in the dehydrator tonight. Cut in half. My wife wanted to eat them but I told her we need to save them because I want to work on them. It was strange nothing blued when cut etc but I could see faint bluing in a few places on the stem where a slud had feasted on a few of them., other did not have any bluing. I keyed it out 3 times but I was not happy with the results.

By: I. G. Safonov (IGSafonov)
2015-07-02 19:10:10 MST (-0700)

These look identical to the species I find in the mixed pitch pine & oak woods in the NJ Pine Barrens, but most of these things look practically the same with a few minor variations. What about the staining of the context — was there a gradual change from pinkish to dark violaceous/blackish? Did you save these?

Created: 2015-07-02 17:37:24 MST (-0700)
Last modified: 2015-07-02 19:00:36 MST (-0700)
Viewed: 31 times, last viewed: 2017-06-20 06:04:04 MST (-0700)
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