Observation 120795: Hydnum rufescens group

When: 2012-09-15

Collection location: Sears Island, Searsport, Maine, USA [Click for map]

Who: Terri Clements/Donna Fulton (pinonbistro)

No specimen available

Proposed Names

33% (4)
Used references: Edible and Medicinal Mushrooms of New England and Eastern Canada and others
61% (2)
Eye3 Eyes3
Recognized by sight

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Eye3 = Observer’s choice
Eyes3 = Current consensus


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Irene, now that I’ve seen some of these
By: Terri Clements/Donna Fulton (pinonbistro)
2014-06-29 20:28:27 IST (+0530)

I understand your comment about coloration and whether or not the spines are decurrent. Although the color has faded in this old specimen it seems consistent with H.rufescens. And the spines are clearly not decurrent as seen in H. repandum. Sorry it’s taken me a while but as always I appreciate your comments as I (eventually) learn from them.


I don’t mind
By: Irene Andersson (irenea)
2012-12-31 16:53:59 IST (+0530)

if you call it repandum. It’s similar to a lot of other “repandum” here at MO (in my opinion, most of them belong to the rufescens complex).
I also know that there has been many different opinions about the namings (Schaeffer had repandum as a variety of rufescens, and Persoon had rufescens as a variety of repandum..). Apparently, americans have adopted Persoon’s point of view, but not separated the varieties.

The cap colour can vary from greyish white to orangish buff, but for me, it’s not a typical repandum when the spines end abruptly at the stipe.

DNA studies also indicate that there is at least half a dozen different species in the rufescens group in North America and Europe still waiting to be described. So we can expect a lot of colour variation in that group.
In addition to several unnamed species in the rufescens group (and possibly repandum), in USA you also have umbilicatum, albomagnum, albidum (whatever that is?), and a close relative to the european ellipsosporum. This is what’s known so far..

I believe that…
By: Elsa (pinknailsgirl)
2012-12-31 04:34:03 IST (+0530)

the observer knows better what he/she saw than us… buttttttt if you want a correct opinion from us, you should provide good photos with good specimens too, which reflect the reality.

degraded specimen
By: Terri Clements/Donna Fulton (pinonbistro)
2012-12-31 01:26:09 IST (+0530)

but good shot of the spines. Unfortunately many other features are missing. The cap, which I should have photographed, is buff colored. This specimen identical to one found at the MMA foray at the same location in the am and identified by the foray leaders as Hydnam repandum.

By: Irene Andersson (irenea)
2012-12-30 14:18:34 IST (+0530)

not decurrent and too dark for repandum

lacks brick color of rufescens
By: Terri Clements/Donna Fulton (pinonbistro)
2012-12-30 08:44:15 IST (+0530)

Created: 2012-12-23 04:42:00 IST (+0530)
Last modified: 2014-06-29 20:22:49 IST (+0530)
Viewed: 121 times, last viewed: 2017-06-15 14:51:07 IST (+0530)
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