Observation 88421: Amanita rubescens f. annulosulfurea (Gillet) Lange

When: 2011-09-25

Collection location: Villa Revedin Bolasco, Castelfranco di Veneto, Italy [Click for map]

Who: James Baker (cepecity)

No specimen available

This mushroom was found on a foray that Italian mycologist, Silvano Pizzardo organized with Ennio Giusti and Albert Casiero. Local area mycologist, Anna Maria Marini, identified this mushroom as Amanita rubescens var. annulosulphurea in the field and after the foray the ID was confirmed by Silvano Pizzardo, “Coordinator pro tempore” of the Federation Veneti (Mycology) Groups.


Same mushroom as above showing the more natural stype color before handling.

Proposed Names

84% (1)
Eye3 Eyes3
Used references: See the link in the comment below by R. E. Tulloss regarding his discussion of this species with Dr. C. Bas.

Please login to propose your own names and vote on existing names.

Eye3 = Observer’s choice
Eyes3 = Current consensus


Add Comment
By: James Baker (cepecity)
2012-03-06 11:11:13 CST (-0500)

Well, it’s like this… This year’s tour was first opened to those who went on last year’s tour. Then the remaining spaces were opened to those who went on the previous 15 or so years the tours have been on going so that about does it…..

wow Jim…
By: Debbie Viess (amanitarita)
2012-03-05 11:26:26 CST (-0500)

a mycologist vs a mycophagist foray in Italy! Que raro! ;)

How do I (or others) sign up for the next one?

did you pick it where you photographed it?
By: Debbie Viess (amanitarita)
2012-03-04 21:54:18 CST (-0500)

if so, that patch of ground was still wet enough for green grass!

of course, even in dry spells you can usually find a bit of green, as long as you know where to look.

Just this one.
By: James Baker (cepecity)
2012-03-04 21:14:43 CST (-0500)

It was actually rather dry, there hadn’t been a lot of rain.

fair enough.
By: Debbie Viess (amanitarita)
2012-03-02 15:06:03 CST (-0500)

I have zero direct experience with this one.

The dark colors I would say are coincidental.
By: Gerhard Koller (Gerhard)
2012-03-02 14:43:24 CST (-0500)

I know this variety very well, it is common in Central Europe and really the only difference as stated below is the yellow annulus or ring. Usually the rest of the features agree 100% to “normal” A. rubescens. Also ecology etc. is the same.

interesting variety, Jim.
By: Debbie Viess (amanitarita)
2012-03-02 14:34:57 CST (-0500)

was it an individual fruit body (as opposed to several)?

hot, dry conditions?

the Italian description (Galli, “Le Amanite”) claims that it has “little color,” but not sure what that actually means…little reddening?

The yellow annulus is quite striking! The stipe appears to be a unusual color as well….quite dark (as opposed to reddening), at least in your photo here. It reminds me a bit of the darkly ornamented stipe found in Amanita brunneolocularis.

Has the DNA been run on this form yet? Seems like a good candidate to me.

Glad you felt it would be worthwhile to make the name change.
By: R. E. Tulloss (ret)
2012-03-02 14:10:11 CST (-0500)



Because the only known difference
By: R. E. Tulloss (ret)
2012-03-02 08:35:22 CST (-0500)

between this taxon and Amanita rubescens is the color of the annulus, Dr. Bas had reached the conclusion that either this entity should be treated at the rank of form or considered to be a color variant of A. rubescens without a separate taxonomic rank.

http://www.amanitaceae.org?Amanita+rubescens [Take a look in the “discussion” data field of the brief tab.]

I would suggest that you might change the name to Amanita rubescens f. annulosulfurea (Gillet) Lange. Notice spelling of “annulosulfurea.”


Created: 2012-03-01 19:47:22 CST (-0500)
Last modified: 2012-03-11 11:19:22 CST (-0500)
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