Observation 204996: Amanita sect. Phalloideae (Fr.) Singer
When: 2015-05-25
No herbarium specimen

Notes: In mixed oak woods.

Images

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specimen on left above. Three on right are MO 204997

Proposed Names

28% (1)
Eye3
Recognized by sight
ret
54% (1)
Eyes3
Recognized by sight: To subdivide the white “destroying angels” in the eastern U.S., spore measurements are very useful, but cannot do the whole job. At present, DNA sequencing is revealing taxa for which we do not yet know distinguishing characters. Also, if the basidia look as though they have rabbit ears (2 sterigmata instead of four), we only know of one species A. bisporigera with globose to subglobose spores and 2-spored basidia.

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Eye3 = Observer’s choice
Eyes3 = Current consensus

Comments

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Also, using KOH on fresh material…
By: R. E. Tulloss (ret)
2015-05-26 06:57:43 EDT (-0400)

is helpful to separate a few species that have ellipsoid spored and don’t turn yellow with the application of 5-10% KOH solution…in your part of the eastern U.S., A. elliptosperma is one such species.

Very best,

Rod

Created: 2015-05-25 23:39:18 EDT (-0400)
Last modified: 2015-05-26 15:51:35 EDT (-0400)
Viewed: 43 times, last viewed: 2015-05-30 23:01:31 EDT (-0400)
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