Observation 178536: Amanita sect. Lepidella sensu Bas
When: 2014-09-15

Notes: Mixed woods. brought to me. Recurved white and brown scales in a circular patteren on the basal portion. White flesh, no color changes. Stipe stuffed, solid.

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Eye3 = Observer’s choice
Eyes3 = Current consensus

Comments

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I would not want to discourage your trying to work up spore measurements.
By: R. E. Tulloss (ret)
2014-09-28 19:14:31 PDT (-0700)

On the other hand some time has passed since this critter was young sprout. And she’s been out of the ground for some time. I think the spore would be very likely to be undersized.

With the “Short list from spores” page on the WAO site, we might be able to get some suggestions if we use the “senile” selection, which makes the attempt to compensate for undersized spores from older fruiting bodies.

Very best,

Rod

Hello Rod.
By: Phil (gunchky)
2014-09-28 17:45:01 PDT (-0700)

Thanks for your comments. If I can extract some spores and give an approximate estimation of their dimensions would this help identify to species? My scope was calibrated by a biology professor two years ago so it should be relatively accurate. He actualy teaches his students how to calibrate a microscope. Fun guy. No pun intended. Thanks again. Phil

Hello, Phil.
By: R. E. Tulloss (ret)
2014-09-27 15:58:24 PDT (-0700)

I think that “floccose” is a good word for the universal veil material under the partial veil and on the stipe. However, this is not what I meant by “fibrils” in the cases of cokeri, subcokeri, and abrupta. In those species separate taut thred-like fibers connect between the underside of the partial veil and the stipe surface. Your new photos show something very distinct from such structures.

Very best,

Rod

Added
By: Phil (gunchky)
2014-09-26 18:07:03 PDT (-0700)

two photos. Perhaps you can see the floccose membranes under the partial veil. Not the best photos. My apologies. Still procrastinating on mike work.

Rod
By: Phil (gunchky)
2014-09-23 16:45:21 PDT (-0700)

I did what you suggested and the partial veil dropped a little. Upon inspecting it I could plainly see an abundance of floccose fibers under the lower portion. It looks like many cotton balls were compressed and forced under the PV. Tomorrow I’ll take some photos and post them. Perhaps I can retrieve some spores also, and scope them.

Looking at the photos…
By: Dave W (Dave W)
2014-09-15 18:28:39 PDT (-0700)

showing the sectioned mushroom, it does appear that some of the basal structure had been sliced off. The bottom terminates in a slightly angled very straight line.

Hello Rod.
By: Phil (gunchky)
2014-09-15 17:09:43 PDT (-0700)

Good to hear from you, and thanks for the info. I’m wondering if the person who gave me this took the time to dig around the base to secure the complete specimen. I pick with him quite often and he likes to “cut and slash”. Perhaps he left something in the substrate. If you would like to study this species, I still have it and would gladly send it to you. Thanks again, Phil.

Hello, Phil.
By: R. E. Tulloss (ret)
2014-09-15 16:47:53 PDT (-0700)

Usually there is a significant rooting cone on the bottom of the bulb of A. cokeri. This doesn’t appear to be present in this specimen. I’m not sure if this specimen is old enough to show it, but cokeri (and the similar subcokeri) have fibers connecting the underside of the skirtlike partial veil to the stem. These fibers are not present in the photos. I’m not sure what is depicted in the pictures.

Have you ever tried to expand an immature amanita? If you are not familiar with the process, one wraps the stem base and bulb (if there is one) in moist (not soaking wet) paper towels and stand the combination up in a paper cup or smallish drinking glass. A little tent of waxpaper to maintain humidity can be helpful.

The advantage is that you can expand the mushroom until the veil drops. This provides you with a chance to see characters that may not have been apparent in the incompletely expanded amanita; also, you can get a spore print.

Also, since it may take hours for the expansion to occur, you cam do process other collections or do something else instead of pondering the uncooperative and unexpanded amanita lump.

The next day…you may have answers…or, if you are unlucky, you may have a very interesting cup of mold(s) that inhabit dead amanitas.

:)

Very best,

Rod

Created: 2014-09-15 16:27:36 PDT (-0700)
Last modified: 2014-09-26 17:59:27 PDT (-0700)
Viewed: 106 times, last viewed: 2016-10-01 11:33:24 PDT (-0700)
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