Observation 116545: Amanita subsect. Gemmatae

When: 2012-11-12

Collection location: Effort, Pennsylvania, USA [Click for map]

Who: goatshoes

No specimen available

Under Conifers in the woods.


When they dry the caps become very golden.
When they dry the caps become very golden.
When they dry the caps become very golden.

Proposed Names

55% (1)
Recognized by sight
75% (2)
Eye3 Eyes3
Recognized by sight

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Eye3 = Observer’s choice
Eyes3 = Current consensus


Add Comment
By: goatshoes
2012-11-15 18:43:11 EST (-0500)

Absolutley! How did I miss that?! Thanks for the correction!

I interpret that photo the same way.
By: R. E. Tulloss (ret)
2012-11-15 13:44:02 EST (-0500)

Unless the Smurfs like to carve the edges of their roofs in this ancient and traditional Smurf pattern.


Goatshoes, if you look at the closeup…
By: Dave W (Dave W)
2012-11-15 13:18:57 EST (-0500)

of your photo..
you will see radial grooves along the margin of the expanded cap to the left.

By: goatshoes
2012-11-15 13:11:25 EST (-0500)

No, Rod there doesn’t appear to be any radial grooves around the edges of a mature cap. Completely smooth.

By: goatshoes
2012-11-14 19:12:30 EST (-0500)

Thanks, Rod. I don’t think I have posted any of the open gills but I do have some larger ones from which I would be happy to upload. Athough they are getting very dry.I will get to it as soon as possible. Thanks again. They have been popping up in magnifecent quanities as well as in multiple locations…counties apart, too. The cap always seems to be of a pale- mellow yellow but yes, always uniform.

David called my attention to this posting.
By: R. E. Tulloss (ret)
2012-11-14 09:20:03 EST (-0500)

Hello, gs.

Have you posted photos of this species with an open cap? Once the cap of a gemmata-like species has opened we have a lot more clues. Does it have a ring on the stem? Does that ring disappear quickly after the cap has expanded? Are there distinct radial grooves around the edge of the cap? Is the color uniform over the whole cap?

Also, while unexpanded “buttons” can teach us stuff about the microscopic anatomy, we won’t be able to get spores from the material; and then we can’t carry out the simplest microscopic analysis…namely, finding ranges for the size and shape of the spores. Also, at least some DNA extraction processes rely on the availability of lots of spores on the gills of mature specimens.

Very best,

Rod Tulloss

By: goatshoes
2012-11-12 22:06:00 EST (-0500)

Wonderful! Thanks for the great information. I do have quite a large collection of these so Id be very willing to help out by any means possible.

The name “gemmata” has been used
By: Dave W (Dave W)
2012-11-12 21:14:28 EST (-0500)

for eastern NA collections. The audubon manual lists it as occurring “throughout North America.” But I believe the current understanding is that this type may comprise a complex of similar species, with possibly none of the eastern NA types matching the European gemmata. Studies are underway.

Goatshoes, if you are able to collect and dehydrate some nice samples then maybe your materails could be included in current studies of NA amanitas. You are on the right track to collect the entire mushroom. Basal structure of the stipe (along with other macro features) is often a very important fetail in the genus amanita.

By: goatshoes
2012-11-12 21:02:59 EST (-0500)

Odd. Wikipedia states that amanita gematta is widespread throughout the Americas.

I believe that Amanita gemmata…
By: Dave W (Dave W)
2012-11-12 20:56:25 EST (-0500)

is a European species, and this name may not apply to similar types found in eastern North America.

Created: 2012-11-12 20:34:43 EST (-0500)
Last modified: 2012-11-12 22:14:30 EST (-0500)
Viewed: 106 times, last viewed: 2017-06-14 10:37:56 EDT (-0400)
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