Observation 221134: Amanita sect. Phalloideae (Fr.) Singer
When: 2015-10-30
No herbarium specimen

Notes: Material collected for RET

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That should not have had such an impact.
By: R. E. Tulloss (ret)
2015-11-20 11:28:42 EST (-0500)

Then I don’t know the cause of the apparent downward shift of length distribution and the occasionall appearance of very long spores on the gill surface. The cap looks fairly broadly expanded; so I wouldn’t have expected oversized spores due to an early stage in spore development.

A puzzle.

Thanks again for the material.

Very best,


Hmmm it is possible
By: Geoff Balme (geoff balme)
2015-11-20 10:57:41 EST (-0500)

that they sat on the table in the wax paper a few hours before I got to drying them. Not longer though.

Hello, Geoff.
By: R. E. Tulloss (ret)
2015-11-20 10:08:27 EST (-0500)

The spores on this material have a distribution of length that suggests that they spent a while waiting to be dried. Is that correct? I’m not sure what their shape would be under “normal” conditions. I’m thinking that the specimen would not have had a positive KOH reaction and might be in the elliptosperma group. We will try to get DNA in coming months. An interesting collection. Thank you.

Very best,


No sir,
By: Geoff Balme (geoff balme)
2015-11-20 08:50:27 EST (-0500)

While I used KOH during my PhD to clear insect specimens, I no longer have a source.

Next year, more measures, KOH and possibly a microscope for spore work. We’ll see.

Did you try a drop of KOH on this critter?
By: R. E. Tulloss (ret)
2015-11-19 13:02:51 EST (-0500)

The amyloid spores are ellipsoid to elongate to (even) cylindric.

Very best,


Created: 2015-10-30 14:28:01 EDT (-0400)
Last modified: 2015-11-18 21:10:03 EST (-0500)
Viewed: 71 times, last viewed: 2017-02-19 04:33:34 EST (-0500)
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