A single large fb growing on a sandy bank of Coopers Road.


Proposed Names

-13% (3)
Recognized by sight
31% (2)
Recognized by sight: Based on Rachel Swenie’s research, all North American Hydnum species other than H. albidum and H. albomagnum are unnamed North American endemics.
47% (2)
Used references: 2018 Niskanen et al. Hydnum paper
56% (1)
Recognized by sight: Orange to brown cap, decurrent spines
Used references: Swenie, R. A., Baroni, T. J., & Matheny, P. B. (2018). Six new species and reports of Hydnum (Cantharellales) from eastern North America. MycoKeys.

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= Observer’s choice
= Current consensus


Add Comment
Good point about quality of research material, Igor.
By: Dave W (Dave W)
2017-10-08 11:40:03 CDT (-0400)

As with toothless and spineless ones, infertile hedgehogs need not apply!

‘Spineless hedgehogs’…
By: I. G. Safonov (IGSafonov)
2017-10-08 11:28:28 CDT (-0400)

…could be a better term. :-) Usually there is a lot of flavor in the hymenium of boletes, not so sure about the spines of Hydnum though. Re the loss of spines, I was referring to the fact that, as far as I know, hymenium is the part usually submitted for DNA sequencing.

Thanks, Django.
By: Dave W (Dave W)
2017-10-08 10:56:52 CDT (-0400)

I’ll wait until new names are available before changing my “repandum” observations.

H. albomagnum is an eastern species
By: Django Grootmyers (heelsplitter)
2017-10-08 10:37:15 CDT (-0400)

Maybe promarily a southeasterrn one though. There’s also an unnamed southeastern species that looks exactly like H. albidum.

Ha! Toothless hedgehogs…
By: Dave W (Dave W)
2017-10-08 08:20:08 CDT (-0400)

Seemingly destined to become roadkill, they never live long enough to lose their teeth.

IMO the mushrooms are better eaten when the spines are scraped off prior to cooking. They seem to not be very good to eat after dehydration.

Django, do you know anything about albomagnum? Maybe it’s a western species? I think I know what albidum is… obs 244547. Igor, you know the spot where I found these.

As for the big beigey ones, I have also found what I believe is the same species rarely under hemlock (in small numbers, no photos!). I think these obs 253657 may be the same species, just younger fruit bodies. These, obs 286608 found in a conifer dominated area, also look pretty similar. However, the ones I find under conifers are generally smaller and more orangey.

So I suppose this type obs 108564 is an unnamed NA species.

I think I remember having received a research request for Hydnum awhile back… may have been Rachel. Alan contacted me personally with his request, which was only a month or so ago. So, Alan definitely gets samples. Most of my collections include enough material for a few useful samples. If Rachel contacts me, she gets a piece of the hedgehog action. I’ll mail all my Hydnum material on the same day, after the season for these type mushrooms has most likely ended.

By: I. G. Safonov (IGSafonov)
2017-10-07 10:46:30 CDT (-0400)

…are not at all common in the Pine Barrens, if memory serves. I have only one other observation, obs 224623 made in December (!), and I also recall making another collection of a gigantic fb a few years prior to that, but there might have been other encounters. It would be interesting to check NJMA cumulative foray records to learn about the distribution, frequency and fruiting season of our Hydnum collections in the Garden State. One place where I’ve seen in with clockwork regularity is the hemlock-dominated Stokes State Forest up in NW Jersey.
I wonder, Dave, if yours and mine are different owing to the habitat. Unfortunately, I didn’t save this collection even though I took it home. No, I didn’t eat it, just kinda forgot about it. I recall these don’t dry well – the teeth easily fall off. Who wants to deal with ‘toothless hedgehogs’? :-)

Send them to Rachel Swenie
By: Django Grootmyers (heelsplitter)
2017-10-07 10:44:13 CDT (-0400)

She’s currently studying them and will be publishing some papers on them at some point.

H. albomagnum is much paler than these.

First I’ve heard the name H. albomagnum.
By: Dave W (Dave W)
2017-10-07 10:11:20 CDT (-0400)

But I surmise from the root meanings that this refers to a large pale type. I’ve been collecting a large pale hedgehog for years (not white, beigey-orangish without the vividly orange cap), and calling it repandum… for lack of better name obs 175696. Probably the same species as what is seen here.

Guess I’m gonna havta train myself to refrain from using the name “repandum”. Alan Rockerfeller mentioned to me that he’s interested in studying the NA Hydnum. So, it may be useful to preserve material. I’ve got a few collections ready for him.