Observation 142546: Amanita muscaria var. persicina Dav.T. Jenkins
When: 2013-08-13
No herbarium specimen

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The “white-cap” of your email about the previous post,…
By: R. E. Tulloss (ret)
2013-08-14 18:11:31 CEST (+0200)

would be a typical muscaria except for being entirely white, warts on the cap, rings of volva on the base of the stem, etc. Genetically it would be inseparable from both var. guessowii and subsp. flavivolvata because they are all color variants of the same species.

It depends how much pigment (if any) is created in the fruiting body and where it is created. If there is only yellow pigment, the cap is all yellow. If there is yellow pigment and purple pigment the cap will appear red to human eyes wherever the purple pigment is present. I don’t know of a case with only the purple pigment present…if that ever happens the cap would be the color of an uncooked beet. When neither pigment is present, the cap would be white.

There is actually an old illustration that shows a muscaria cap with red stripes on a yellow ground color. So weird things have been noticed over the last couple of centuries of mycology.

The “white-capped North American muscaria” apparently may stain yellow when cut…that is the meaning of the epithet “chrysoblema.”

Very best,

Rod

Yes it is going to change.
By: R. E. Tulloss (ret)
2013-08-14 16:48:17 CEST (+0200)

Both varieties will cease to be, and both taxa should be recognized at species rankg. It would be natural to move muscaria var. persicina ==> persicina. I am writing an article to accomplish that.

There is more difficulty involved in coming up with a name for var. guessowii. We know that var. guessowii is the same species as subsp. flavivolvata.

We also know that there is white-capped material representing the same species. We have two names for white-capped material appearing to be “muscarioid” in North America: muscaria var. alba (described from NY state) and chrysoblema (described from Michigan).

IF THOSE NAMES ARE TWO NAMES FOR ONE ENTITY (which needs to be re-examined) and IF THAT ENTITY IS THE WHITE-CAPPED FORM of THE SPECIES TO WHICH var. guessowii and subsp. flavivolvata correspond, then it appears that chrysoblema would be the only available name at species rank and would apply to the red-capped, yellow-capped, and white-capped color variants. This requires collecting of white-capped muscarioid specimens escpecially in the region bounded by Michigan and New York in the northern U.S. and southern Canada. These collections must include buttons to show that the material is white from early development to maturity.

Such collections seem to be rare as hen’s teeth.

Let this comment be an appeal for collections of such material to be sent to me; so that we can resolve this problem and move on to other matters.

Very best,

Rod

Thats amazing.
By: pete (petepann)
2013-08-14 00:31:26 CEST (+0200)

I did not realise that A. muscaria var. persicina covered so many color variances. I had an idea that these finds were going to be either this or guessowii. Shocking to me that persicina came out in the lead. Isn’t this nomenclature soon to change?

Again, this could be A. muscaria var. persicina.
By: R. E. Tulloss (ret)
2013-08-13 23:59:31 CEST (+0200)

R

Created: 2013-08-13 23:43:18 CEST (+0200)
Last modified: 2013-08-14 01:01:42 CEST (+0200)
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