Observation 86826: Amanita jacksonii Pomerleau
When: 2011-09-18
38.53° 78.15°
No herbarium specimen
0 Sequences

Fruiting on the ground. Another Amanita parcivolvata perhaps?

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27% (1)
Recognized by sight

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The first image…
By: R. E. Tulloss (ret)
2012-01-22 04:40:55 PST (-0800)

shows striations around the edge of the cap. The darker reddish pigment corresponds to the grooves between the gills (very much like the folds between the spokes in an unexpanded umbrella.

Your species probably had a large white sac surrounding its based. This would be another difference between it and A. parcivolvata, which has a powdery yellow veil as well as no ring/skirt on the stem.

You’re probably quite tired of people saying that they need to see the base of the stem for determining amanitas. Unfortunately, it is very important.

Considering your locality, the thin layer of orange material decorating the surface of the stem in some spots, and with the assumption that there was a saccate volva on the base of the stem, your species could be Amanita jacksonii:


Very best,


I just put up
By: Penny Firth (pfirth)
2012-01-21 19:24:37 PST (-0800)

#86841, another yellow one with a ring. Fruiting ~2 weeks before #86826 and in a different area.

you can see
By: Penny Firth (pfirth)
2012-01-21 19:21:13 PST (-0800)

the gills through the cap in image 1, but I don’t recall any striations or grooves. I think the cap was smooth. I have another of these yellow ones with a ring I’ll put up momentarily.

Thanks for the tutorial on A. parcivolvata.


Amanita parcivolvata has no skirt or ring on the stem.
By: R. E. Tulloss (ret)
2012-01-21 19:03:49 PST (-0800)

Did you see radial rooves/striations on the edge of the cap?


Created: 2012-01-21 18:29:24 PST (-0800)
Last modified: 2012-01-22 04:41:54 PST (-0800)
Viewed: 62 times, last viewed: 2017-06-10 06:14:43 PDT (-0700)
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