Observation 208316: Amanita cylindrispora Beardslee

When: 2015-06-29

Collection location: Gainesville, Florida, USA [Click for map]

Who: Sarah Prentice

No specimen available

Proposed Names

28% (1)
Recognized by sight
27% (1)
Recognized by sight: A membranous or submembranous has been pulled off the bulb and encircles the base of the stem. A number of the North American spp. of the Limbatulae were described from Florida. The stature of this specimen reminds me a bit of A. cylindrispora. How much of the stem was below the soil surface?

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Eye3 = Observer’s choice
Eyes3 = Current consensus


Add Comment
No microscope.
By: Sarah Prentice
2015-07-02 00:57:42 CEST (+0200)

Right now I lack access to and knowledge of microscopy, but that’s useful info for the future.

I’d be interested in your opinion on this observation from a day earlier, in the same area: http://mushroomobserver.org/208152


A significant part of the stem buried is typical of A. cylindrispora.
By: R. E. Tulloss (ret)
2015-07-01 05:01:27 CEST (+0200)

The button appears to develop well down in the soil so the stem has to expand quite a bit to get the cap above the soil surface.

If you have a microscope, you can check out the ratio of spore length to spore width. The value is very high in cylindrispora (check the data at the cited link).

Very best,


Thank you, Rod.
By: Sarah Prentice
2015-07-01 03:32:19 CEST (+0200)

I appreciate the links. At least half of the stem was below the soil surface.

Created: 2015-07-01 02:07:45 CEST (+0200)
Last modified: 2015-07-26 19:04:55 CEST (+0200)
Viewed: 84 times, last viewed: 2017-10-31 18:50:38 CET (+0100)
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