Observation 186664: Amanita rhacopus group

When: 2014-09-15

Collection location: Blue Ridge Parkway, McDowell Co., North Carolina, USA [Click for map]

Who: walt sturgeon (Mycowalt)

No specimen available

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Eye3 = Observer’s choice
Eyes3 = Current consensus


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I should add …
By: R. E. Tulloss (ret)
2014-10-30 11:27:52 PDT (-0700)

that in deciding which species to compare with “rhacopus,” I eliminated all of those that have a volva that is other than white before the graying or other color change occurs.

Very best,


Beautiful, but probably not “rhacopus,” Walt.
By: R. E. Tulloss (ret)
2014-10-30 11:24:33 PDT (-0700)

Just in the last day, I posted another species on WA) in the “rhacopus” group.

The new taxon is here:


Another member of the “group” with a cap color somewhat similar to that in your photo is here:


To illustrate that some of these taxa can be separated from some of the others by spore data alone, I set up (on the technical tab of the “rhacopus” page) sporographs comparing the spores of “rhacopus” with a group of the other taxa that are separated morphologically and/or molecularly from “rhacopus,” as of this morning.

The sporographs “stream” data from the database that underlies the web pages. Hence, if I change spore data for some species, all the sporographs on the site that include a graph representing that spore data are immediately updated to reflect the change. Nice feature thanks to David Tulloss.

The “rhacopus page” is here:


Since the data sample sizes are all pretty small at the moment, there will be some changes in the graphs before they stabilize.

Very best,


Created: 2014-10-30 10:18:50 PDT (-0700)
Last modified: 2014-10-30 13:48:28 PDT (-0700)
Viewed: 23 times, last viewed: 2017-07-30 21:37:23 PDT (-0700)
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