Observation 32201: Amanita rubescens var. alba Coker
When: 2009-06-20
No herbarium specimen

Notes: Growing in oak/pine forest.

Proposed Names

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For what it’s worth
By: Eric Smith (esmith)
2010-01-20 14:32:38 PST (-0800)

I added an image of a younger, whiter specimen that I dug out of the sand next to the others. Could the fact that it was mostly covered by sand make it more pale in any way?

I do have a spore print of these, but didn’t keep any samples.

Thanks, Rod!

A thought about this set of pix
By: R. E. Tulloss (ret)
2010-01-18 20:25:01 PST (-0800)

This cap seems to be cream colored. Amanita rubescens var. alba Coker usually has a very white cap before bruising. Folks should be aware that the cap color is not the only difference between A. rubescens var. abla and other rubescent amanitas in Amanita sect. Validae. The spores of var. alba are rather distinctive. My guess is that its closest relatives are A. flavorubens and “A. amerirubescens.” From what I have been able to tell from limited studies, the North American var. alba is NOT a variety of the European rubescens. But I do not suggest any name change because there is insufficient information as to what a good (correct, accepted) name would be.

If there are any N. American students of fungal taxonomy nowadays, I would be glad to consult on thesis projects in the Validae at either masters or PhD levels. The field is barely plowed.

Very best,


Created: 2010-01-18 18:54:02 PST (-0800)
Last modified: 2012-07-06 16:58:35 PDT (-0700)
Viewed: 59 times, last viewed: 2016-10-28 00:32:56 PDT (-0700)
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