Observation 22938: Amanita onusta (Howe) Sacc.

When: 2009-07-04

Collection location: Concord, Massachusetts, USA [Click for map]

Who: Noah Siegel (Noah)

Specimen available

smell lep, cap 3-5cm across, unpleasant odor (would you expect anything else) it probably was growing with oak but spruce was in the area.

[admin – Sat Aug 14 02:07:25 +0000 2010]: Changed location name from ‘Walden Biodiversity Day II, Concord, Middlesex Co., Massachusetts, USA’ to ‘Concord, Massachusetts, USA’

Proposed Names

37% (2)
Recognized by sight
28% (1)
Recognized by sight: cap looks a bit weird, was it drying out? lepidella with a dog-legging stipe makes me think of longipes…
20% (2)
Recognized by sight
54% (1)
Recognized by sight

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= Observer’s choice
= Current consensus


Add Comment
Considering the locality and the colors of the cap and warts,…
By: R. E. Tulloss (ret)
2013-10-15 16:18:33 PDT (-0700)

I’m now thinking that this is most likely Amanita onusta (it’s gills turn yellowish rapidly…probably due to unusually rapid decay).


By: R. E. Tulloss (ret)
2009-07-07 16:38:47 PDT (-0700)

The gills seem to be somewhere in the range of pinkish or cream or orangish. This would not be true for either onusta or longipes. Amanita longipes was called by Bas (approximately) a “clampless” chlorinosma. Its volva only forms warts (very friable ones) infrequently over the disc. It’s odor is like a tidal pool rather than nasty…it is in the decaying protein class of odors, however. The odor of onusta has never impressed me much one way or the other. Amanita subsolitaria has yellowish cream gills and a distinctive odor, but not one of the nasty ones. I’m in Texas and stumped.


It did remind me of
By: Noah Siegel (Noah)
2009-07-05 14:25:22 PDT (-0700)

A. longipes but the veil didn’t look floccose enough. it also looks similar to A onusta but the veil doesn’t look gray enough.

Created: 2009-07-05 10:49:01 PDT (-0700)
Last modified: 2016-12-27 11:13:15 PST (-0800)
Viewed: 80 times, last viewed: 2019-01-29 08:46:06 PST (-0800)
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