Observation 158369: Rhizopogon Fr. & Nordholm
When: 2014-01-22
Collection location: Braga, Portugal [Click for map]
No herbarium specimen

Notes: Near pines.

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Eye3 = Observer’s choice
Eyes3 = Current consensus

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Vulcanoes
By: Elsa (pinknailsgirl)
2014-01-23 13:56:21 EST (-0500)

Only on Azores, I think…but I read that it is widespread here in Europe.

I only see grey at naked eyes, but the pc shows green and pink shades too.

About this, I read something, that for you could mean more than for me…

http://publicacions.iec.cat/...

I said
By: Daniel B. Wheeler (Tuberale)
2014-01-23 13:36:19 EST (-0500)

R. occidentalis has yellow-green or greenish-gray coloration. I did not say green. This to my eye is clearly green, an unusual color in the Rhizopogonaceae.

Even Dr. Alexander H. Smith, who first coined Rhizopogons, seldom found green glebas in Rhizopogons. But, he also said he had the largest “unidentified” collection of Rhizogopons, too. Almost all of his collecting was in Idaho, Washington, Michigan, or elsewhere in the U.S.

While you state the “gleba is gray at sight” to me it appears green. That’s one reason I find this obs. interesting. Green is, as stated earlier, rather rare.

Please obs. the propable host if you find it again. If host is actually Pinus sylvestris, it should also be found in N.A.

Rhizopogom occidentalis is found in coastal (sand) dunes to mountain forests, according to NATS Field Guide To Selected North American Truffles and Truffle-like Fungi. Even in mountainous areas, the soil often has volcanic ash incorporated into it, as from the 1980 Mt. St. Helens eruption.

Does Portugal have many active volcanoes?

Daniel
By: Elsa (pinknailsgirl)
2014-01-23 11:11:16 EST (-0500)

I only noticed the “green” you were talking when I zoomed the photo at maximum on my pc. The gleba is gray at sight, with some shades of green.

But you are contradicting yourself, pls see your obs. http://mushroomobserver.org/9905?user_locale=pt-BR

“gleba… gray-green”

I zoomed one of your photos in another obs. and I saw a bit of green too.
It probably depends on maturity stage or something else.

Reading your description I become more sure of my ID, because I found another one near this with liquid inside.

I didn’t pay much attention to the kind of pinus, but they could be Pinus sylvestris that is the common species here.

Having collected R. occidentalis
By: Daniel B. Wheeler (Tuberale)
2014-01-22 22:05:02 EST (-0500)

nearly 50 times, the gleba is NEVER green. Rhizomorphs on the peridium stain yellowish for R. occidentalis.

Which species of Pinus did you find this near, Elsa?

Created: 2014-01-22 14:05:09 EST (-0500)
Last modified: 2014-01-22 22:02:55 EST (-0500)
Viewed: 31 times, last viewed: 2017-06-17 22:32:27 EDT (-0400)
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