Observation 138810: Amanita flavorubens (Berk. & Mont.) Sacc.

When: 2013-07-03

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

Who: Dave W (Dave W)

Specimen available

Is the name “falvorubens” depriciated? That’s what the MO message says.

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Hello, David.
By: R. E. Tulloss (ret)
2013-10-09 13:58:53 PDT (-0700)

This collection and eight others have been sequenced recently at the Univ. of Tennessee, Knoxville, under the direction of Dr. Karen S. Hughes. The sequences and a summary of results were received on the 1st of October while I was away from the office. The sequences come from material collected in Connecticut, Missouri, New Jersey, New Mexico, Ohio, and Pennsylvania. All this material was judged to be Amanita flavorubens prior to sequencing. All the sequences are in agreement. Hence, it would appear from this evidence that Amanita flavorubens as presently conceived in North America is likely to be a single species.

Some of your material has been producing DNA that is more difficult to sequence than other recent collections. I would guess that this may be because you are either drying top slowly or too quickly. Some heat is required (maybe 105-120 degrees F) is require to keep from losing DNA to moisture. Exceeding the above range of temperature can damage DNA due to too much heat.

Thank you for your contribution to our research.

Very best,


Created: 2013-07-06 11:30:39 PDT (-0700)
Last modified: 2017-12-28 11:09:03 PST (-0800)
Viewed: 73 times, last viewed: 2018-03-14 06:55:13 PDT (-0700)
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