Notes: The specimen at right is a spectacular example showing the large, membranous veil.
A. californicus always has a much more modest veil.
Agaricus xanthodermus Genev. on MyCoPortal
Agaricus xanthodermus on MycoBank
Alternative Name: Agaricus xanthodermus Genev. var. xanthodermus
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are subtle at first, but the more you see each species, the easier it gets:
A. xanthodermus has a more prominent, often huge, “billowing” partial veil.
A. californicus has a thicker-edged, much more modest PV.
A. xanthodermus stains violently yellow (usually), whereas A. californicus is much more reluctant to bruise, and then not so saturated “highlighter” yellow.
A. xanthodermus tends to have a constricted and then bulbous and right-angle crooked stipe base, whereas A. californicus tends to have a simple cyindrical and straight base.
A. xanthodermus can get much larger.
Couldn’t the question of whether there are cryptic species be applied to every observation on this site?
Do you mind sharing the different criteria that help you differentiate A. xanthodermus and A. californicus? I’m especially interested in what you meant when you said spores could distinguish them in the past? Could there be cryptic species?
Created: 2014-11-14 15:20:43 CST (-0500)
Last modified: 2014-11-14 15:23:42 CST (-0500)
Viewed: 32 times, last viewed: 2016-10-28 20:40:40 CDT (-0400)