Observation 114780: Amanita stranella E.-J. Gilbert & Snell

When: 2012-10-28

Collection location: Sweet Valley, Pennsylvania, USA [Click for map]

Who: Dave W (Dave W)

Specimen available

Wondering if these yellow amanitas may be examples of sp01? growing in a stand of pine. Will determine species of pine later. Several patches observed. Some good material dehydrating.


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Globose spores suggests praecox or stranella
By: R. E. Tulloss (ret)
2015-06-01 08:11:50 PDT (-0700)

if they are indeed distinct.

Very best,


Collected in same location, on same day…
By: Dave W (Dave W)
2015-06-01 05:02:27 PDT (-0700)

as obs 114779.

The ones in this obs (114780) have globose to subglobose spores. The ones in obs 114779 have ellipsoid spores. Otherwise, the two collections appear to be quite similar. Caps are all short-striate with striations not prominent.

Stand of Virginia Pine.

Partial veil for the ones seen here…
By: Dave W (Dave W)
2015-01-22 17:03:32 PST (-0800)

were not what I would call persistent. In some cases ragged remnants clung to the cap margin, and in other cases a ragged poorly formed (partial) annulus formed on the stipe. A few of the partial veils had completely disappeared.

A persistent partial veil raises a question mark regarding praecox.
By: R. E. Tulloss (ret)
2015-01-21 06:14:53 PST (-0800)

There is work afoot in Quebec to publish praecox. To this end, I am beginning to extensively sequence praecox-like material in my herbarium. I think we will have a better understanding of what is going on within the coming year.

Very best,


Looking at this again…
By: Dave W (Dave W)
2015-01-21 04:53:24 PST (-0800)

the spores being globose appears to eliminate sp-S01 from consideration. Except for the somewhat indistinct basal volval collar, these do look like what I would call praecox. Interesting time to find the “Early Spring Amanita”, late October. Also, the habitat was a pure stand of planted Virginia Pine. There may have been hemlock in the adjacent native woods. But as I recall, these were collected near where the pine stand borders a mowed field… hemlock not present.

Thanks Dave,
By: groundhog
2013-08-01 08:57:56 PDT (-0700)

This material has been received and accessioned into Rod’s herbarium.

Now that I see some material with marginal striations,…
By: R. E. Tulloss (ret)
2012-10-29 05:22:34 PDT (-0700)

I do think that Amanita “sp-S01” is a possibility.


Created: 2012-10-28 23:25:03 PDT (-0700)
Last modified: 2018-01-03 14:29:06 PST (-0800)
Viewed: 242 times, last viewed: 2018-02-24 02:35:43 PST (-0800)
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