Observation 149839: Leucoagaricus Locq. ex Singer

When: 2013-10-25

Collection location: Braga, Portugal [Click for map]

Who: Elsa (pinknailsgirl)

No specimen available

On my backyard.

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Eye3 = Observer’s choice
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By: Elsa (pinknailsgirl)
2013-11-06 18:55:47 EST (-0500)

I always wanted to know this.
When I found the first specimen, it had no ring, so I chose Lepiota, but in doubt between Leucoagaricus and Lepiota due to lack of scales. When I found the second specimen my doubt increased due to the ring and stem (just intuition)… I was waiting for someone to clarify it to me. Thank you again, Else.

removable ring vs a more ingrown one
By: else
2013-11-06 16:57:00 EST (-0500)

Leucoagaricus species in general have a neat ring- that either is funnel-shaped and flares out from the part that is around the stipe, or is quite clearly defined as in this specimen.
Lepiota species in general do not have such a ring (exceptions are in the group of L. cristata), more an annular zone.
Furthermore, Lepiota species have bands of velar material on the stipe, with the exception of species in the group of L. cristata, whereas Leucoagaricus species might have cystidia on the stipe but not coloured bands.
So, one may wonder, why is this not in the group of L. cristata? Well, those have a pileus covering that is made up of narrow club-shaped cells that are tightly packed together (like people in a crowd), and en masee the surface looks smooth. This specimen here, has radial hyphae.

Thank you Else
By: Elsa (pinknailsgirl)
2013-11-06 15:48:55 EST (-0500)

Could you explain me how to distinguish these two taxonomies? Which are the differences in the annulus?

By: else
2013-11-06 13:44:57 EST (-0500)

This is a Leucoagaricus – close to L. leucothites – because of the general shape (especially the bulbous base on the stipe), and the annulus.

Created: 2013-10-25 20:35:52 EDT (-0400)
Last modified: 2013-11-07 11:02:58 EST (-0500)
Viewed: 42 times, last viewed: 2017-06-16 19:19:35 EDT (-0400)
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