Observation 221134: Amanita sect. Phalloideae (Fr.) Singer

Material collected for RET

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That should not have had such an impact.
By: R. E. Tulloss (ret)
2015-11-20 08:28:42 PST (-0800)

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 07:57:41 PST (-0800)

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 07:08:27 PST (-0800)

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 05:50:27 PST (-0800)

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 10:02:51 PST (-0800)

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

Very best,


Created: 2015-10-30 11:28:01 PDT (-0700)
Last modified: 2018-01-05 19:38:18 PST (-0800)
Viewed: 77 times, last viewed: 2018-01-06 00:38:44 PST (-0800)
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