Observation 103207: Hydnellum caeruleum (Hornem.) P. Karst.
When: 2012-07-28
No herbarium specimen

Proposed Names

56% (1)
Eyes3
Used references: Arora, Mushrooms Demystified, plus Gerald Koller’s comments on German Hydnellum. This is a huge specimen, approximately 12cm x 15cm. H. caeruleum is the only Hydnellum that reaches that size, has blue patches or bluing in the sporocarp, and is found in parts of Europe. So even though there is no visible pore surface, I’m calling this promising.

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Eye3 = Observer’s choice
Eyes3 = Current consensus

Comments

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Yes,
By: Gerhard Koller (Gerhard)
2012-08-02 12:58:30 PDT (-0700)

in Europe we have Hydnellum caeruleum too. I think this could be a match. But without further fruitbodies and thorough documentation it remains uncertain though.

Hydnellum, Thelephora
By: Daniel B. Wheeler (Tuberale)
2012-08-02 12:36:26 PDT (-0700)

in my area would have spore production over all the upper surfaces, plus some side surfaces. Thelephora is fairly abundant locally, especially in sandy soils of sand dune areas. But it never reaches the size (in my experience) of this obs. Also, have never seen any bluing reaction in Thelephora locally.

Just re-checked through Arora and Hydnellums, though, and Hydnellum caeruleum is the only species in Arora that can match the size of this obs. Anything similar in Germany, Gerhard?

If what I see aren’t young pores in developing stage
By: Gerhard Koller (Gerhard)
2012-08-02 02:04:45 PDT (-0700)

consider also Hydnellum/Bankera/Phellodon/Thelephora species. Would fit much better in respect to color and felty surface.
Deuteragenie, could you come back to this place and take new shots of the fruitbody if it is still there?

I’d guess the top is still forming.
By: Daniel B. Wheeler (Tuberale)
2012-08-02 00:10:09 PDT (-0700)

Hymenium might be forming underneath. If you blow up the first photo to huge, it seems to be forming under the top and maybe 1-2cm below the top, forming something similar to a band around the top. But that’s just a guess.

The close-up is out-of-focus. It seems to have a lot of fine spines on it and a lot of fuzz. The fuzz is not the same size, nor same color, nor same consistency as the spines are.

and no pores?
By: Danny Newman (myxomop)
2012-08-01 22:44:31 PDT (-0700)

if you had to guess, where would you say the hymenium is? how would you describe it?

All I could think of
By: Gerhard Koller (Gerhard)
2012-08-01 13:59:46 PDT (-0700)

would be some young Onnia/Inonotus. Would it be a conifer root I would go for very young Phaeolus. If it smelt I would have thought of Gloeophyllum.

More info
By: deuteragenie
2012-08-01 13:47:42 PDT (-0700)

Very close to ground – maybe 20 cm. On a root of a living tree.

I don’t have a clue.
By: Daniel B. Wheeler (Tuberale)
2012-08-01 13:37:37 PDT (-0700)

Never seen anything like it. Growing on beech or oak, almost 7 inches across, no particular odor, hard spongy consistency.

I’m afraid this one would require some microscopy, deuteragenie.

Two more questions if you don’t mind: 1) how far off the ground, and 2) on a branch or a trunk? (I really can’t see how either will help identify this, but I just like to ask question.:))

Smell etc
By: deuteragenie
2012-08-01 13:17:08 PDT (-0700)

No particular smell, consistency is rather hard spongious.

Any particular smell?
By: Gerhard Koller (Gerhard)
2012-08-01 13:15:28 PDT (-0700)

Consistency?

More info
By: deuteragenie
2012-08-01 13:12:27 PDT (-0700)

Lignicolus. I could not determine which wood precisely, but likely beech or oak.
Size: +- 15 cm

A. caeruleoporus does not grow in Europe.
By: Gerhard Koller (Gerhard)
2012-07-31 13:45:16 PDT (-0700)

But I agree, more information is needed.

Terrestrial?
By: Daniel B. Wheeler (Tuberale)
2012-07-29 10:56:16 PDT (-0700)

Lignicolous? Size? Height? Could be an odd-shaped Albatrellus, maybe near A. caeruleoporus; but could as easily be a something growing on a Thelephora.

Created: 2012-07-28 14:02:17 PDT (-0700)
Last modified: 2012-08-02 13:52:25 PDT (-0700)
Viewed: 101 times, last viewed: 2016-10-23 14:20:10 PDT (-0700)
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