Observation 48019: Amanita sect. Caesareae Singer
When: 2010-07-03
No herbarium specimen

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Also note there is no umbo on the expanding cap…
By: R. E. Tulloss (ret)
2010-07-04 22:49:33 BDT (+0600)

There is evidence that there is a species in sect. Caesarea with northeastern N. American range that differs from A. banningiana at least by having a more robust cap. There is some unpublished phylogenetic support for such an NON-banningiana.

I have to congratulate Dave on his sharp eye. Short marginal striations are often related to a cap that this thicker than one having long marginal striations. Absence of an umbo (at least to some degree) correlates with “shorter” marginal striations.

Any chance of getting dried material of this critter or another specimen from the same site? The only known example of the amanita described above as differing from A. banningiana is a single collection from New York state with the code name Amanita species N12. It was collected in 1994 by Connie Borodenko (if you know Connie’s rep as a collector, you will under stand if I say “well, who else?”).

R.

Striations are a bit weak
By: Dave W (Dave W)
2010-07-04 20:43:18 BDT (+0600)

and gills show no yellow at all. Even with one in hand I sometimes find it difficult to put the “I’d call it that” onto a banningiana. Amount/distribution of yellow on fruit body seems quite variable to me.

Created: 2010-07-04 05:42:48 BDT (+0600)
Last modified: 2012-06-07 03:41:41 BDT (+0600)
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