Observation 339984: Agaricus L.


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By: Rick Kerrigan (rwkerrigan)
2018-10-22 15:37:17 EDT (-0400)

What we are calling A. chionodermus (while waiting for Europe to sequence and study authentic material) is an example of how Agaricus often does not conform to simple rules. The section Arvenses and its sister groups reliably have an almond/anise odor and some yellow staining and a positive A+A reaction. Those same traits are additionally scattered among occasional species in groups that are not closely related. Here is one example. The traits are subtle in the few qualifying species in section Agaricus.

Thanks Rick
By: Johannes Harnisch (Johann Harnisch)
2018-10-22 15:29:52 EDT (-0400)

Yes, the yellow staining is not very dramatic tho there is a slight strong odor, probably similar to A. arvensis

One possibility
By: Rick Kerrigan (rwkerrigan)
2018-10-20 23:40:05 EDT (-0400)

It looks most similar to the western species I called A. cf. chionodermus. A. sequoiae is also somewhat similar. I think that’s the right species-group, if there was no distinct odor and no pronounced yellow staining.

Created: 2018-10-19 13:03:33 EDT (-0400)
Last modified: 2018-10-22 15:37:18 EDT (-0400)
Viewed: 23 times, last viewed: 2019-03-17 01:12:33 EDT (-0400)
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