Observation 220883: Amanita sect. Phalloideae (Fr.) Singer

When: 2015-05-26

Collection location: Cle Elum, Washington, USA [Click for map]

Who: Chris Herrera (The Mushroom Whisperer)

No specimen available

Spring, under mixed conifers. I don’t remember which trees were the closest.

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By: Chris Herrera (The Mushroom Whisperer)
2015-10-28 21:40:33 SAST (+0200)

I hope these grow back next year. More pictures, notes, and a sample will be in order.

Thanks for your comment, Rod.


Amanita ocreata or A. phalloides (white variant) are possibilities
By: R. E. Tulloss (ret)
2015-10-28 15:13:00 SAST (+0200)

The former is reported to turn yellow when KOH is applied to its cap surface. The latter does not produce that reaction.

There is a question as to whether there are potentially differentiable taxa “hidden” in our current concept of A. ocreata.

Chinese researchers have shown (based on molecular research) that there were several white destroying angels hidden in their concepts of east Asian destroying angels. In the eastern U.S., we think there are a minimum of 5 white destroying angels with average spore shapes in the range of subglobose to broadly ellipsoid. This includes two taxa with names (A. bisporigera and A. suballiacea) and three others with provisional names or code names.

It is possible that something similar may be true of the Phalloideae in the Pacific Coastal states.

Very best,


Created: 2015-10-28 10:43:08 SAST (+0200)
Last modified: 2015-10-28 15:01:44 SAST (+0200)
Viewed: 72 times, last viewed: 2017-06-21 08:33:56 SAST (+0200)
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