Observation 156848: Amanita sect. Phalloideae (Fr.) Singer
When: 2013-09-20

Notes: There are two species of destroying angeles which occur in this spot. This observation is for the smaller, thinner one which stains bright yellow in KOH. The other species is larger, barely stains yellow at all with KOH, and turns pink in age.

Images

395340
IMG_7755.JPG
395328
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Both species
395329
IMG_7743.JPG
Both species
395330
IMG_7746.JPG
Both species
395331
IMG_7747.JPG
Both species
395341
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395342
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With KOH

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Comments

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I have not scoped these
By: Alan Rockefeller (Alan Rockefeller)
2014-01-01 22:49:15 CST (-0500)

But even if the spores were identical I would still call these different species. In many collections all over Mexico, the larger, stockier ones don’t stain much in KOH and the smaller more gracile ones turn bright yellow in KOH.

did you compare the micro?
By: Debbie Viess (amanitarita)
2014-01-01 15:21:40 CST (-0500)

KOH rxns. can be quite variable even w/in a species, and stockiness of fruit body is variable, too.

our ocreatas can turn pink on the cap, too, but not all of them do. i have also observed pink capped bisporigera in the SE; it’s rare, but it happens.

these colors and size diffs do not necessarily indicate different species. more data needed.

Created: 2014-01-01 01:28:39 CST (-0500)
Last modified: 2014-01-01 01:39:21 CST (-0500)
Viewed: 36 times, last viewed: 2016-10-22 04:08:53 CDT (-0400)
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