Observation 136632: Amanita amerirubescens Tulloss nom. prov.

When: 2013-06-16

Collection location: La Barque Creek, Missouri, USA [Click for map]

38.4187° -90.7014°

Who: Patrick Harvey (pg_harvey)

Specimen available

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Thank you again.
By: R. E. Tulloss (ret)
2013-06-23 16:55:30 CDT (-0400)

The material has been received and will be scheduled for sampling for sequencing.

Very best,


Ah, thought it was found in this condition.
By: Jim Tunney (Jim Tunney)
2013-06-17 23:11:00 CDT (-0400)

We have a reddening amanita, that a bit more conical than yours and somewhat darker that I’ve seen a couple of times, that I thought was a different species, maybe it’s not.

Thank you, Patrick.
By: R. E. Tulloss (ret)
2013-06-17 11:06:10 CDT (-0400)


Yes, you may used this sample
By: Patrick Harvey (pg_harvey)
2013-06-17 09:49:33 CDT (-0400)

I should be sending this out with a few more finds from the past week tomorrow

The present specimen would
By: R. E. Tulloss (ret)
2013-06-17 09:24:09 CDT (-0400)

represent an unsampled county. We could put it into the sampling schedule. Patrick would allow me to use the dried specimen?

Very best,


By: Patrick Harvey (pg_harvey)
2013-06-17 07:52:34 CDT (-0400)

There are a very few scales on the cap. There was a thunderstorm the night before, so many of them had washed off.

By: Patrick Harvey (pg_harvey)
2013-06-17 07:46:39 CDT (-0400)

La Barque Creek is in northeastern Jefferson county, south of Eureka, Missouri

Location map: http://mushroomobserver.org/location/show_location/4383

The volva can be easily lost in many species of sect. Validae because of…
By: R. E. Tulloss (ret)
2013-06-17 00:16:19 CDT (-0400)

the combination of cap surface gelatinization and the friable to pulverulent nature of the volva.

If this critter had not met its fate in Patrick’s dryer, I think there is a good chance that it would have expanded to fit the concept of amerirubescens a bit better than it might appear to do as immortalized in these photographs.

We are just starting into a geographically broad, genetic, preliminary investigation of the rubescent group. Our largest set of samples to date went off to the post office yesterday morning. This included a sample that I labeled “amerirubescens” from Jefferson Co., MO.

In which county is La Barque Creek?

Very best,


This is probably another species of red staining amanita,
By: Jim Tunney (Jim Tunney)
2013-06-16 19:37:28 CDT (-0400)

It’s not robust enough, the unopened cap is conical instead of rounded and there’s no scales on the cap.

Created: 2013-06-16 19:00:13 CDT (-0400)
Last modified: 2017-12-29 09:33:24 CST (-0500)
Viewed: 265 times, last viewed: 2018-04-21 05:35:13 CDT (-0400)
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