Observation 93470: Amanita Pers. sect. Amanita
When: 2012-04-28
Herbarium specimen reported

Notes: Found underneath oak.

Cap 6cm wide, is dry, striated margin, yellowish/tan near the center.

Stem 9mc long, slender, bulb at the base, no ring present.

Proposed Names

56% (1)
Recognized by sight
ret
77% (2)
Eye3 Eyes3
Recognized by sight: see comment

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Eye3 = Observer’s choice
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Comments

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Seen before
By: AmatoxinApocalypse (AmatoxinApocalypse)
2012-04-29 04:11:56 CST (+0800)

Yes I think I have seen this one before, its seen from spring to the beginning of summer here then disappears. Usually found underneath Oak.

I was curious about those bumps around the margin, thanks for clearing that up Rod.

But…
By: R. E. Tulloss (ret)
2012-04-29 03:59:30 CST (+0800)

I hadn’t noticed the dimensions…maybe this is not the E. PA species. How about A. sp-S01?

http://www.amanitaceae.org?Amanita+sp-S01

R

Nice set of pictures.
By: R. E. Tulloss (ret)
2012-04-29 03:57:38 CST (+0800)

Bulb at the stipe base, tuberculate-striate cap margin (little bumps on the ridges between the grooves on the cap edge). So this is very likely to have inamyloid spores (subgenus Amanita) and, within the subgenus, the bulb means it’s got to go in section Amanita.

Have you seen this before? Do you think it is an exannulate species or a species that lost a ring that it had at first? Or maybe the answer is “dunno”?

No collar around the base of the stipe (on top of the bulb) means that both the annulate A. multisquamosa and the never annulate A. albocreata are both eliminated.

If David Wasilewski takes a look at this, I’d be interested to know if he relates this to the species from eastern PA that he and I have gone back and forth about in recent years.

Very best,

R

Created: 2012-04-29 02:53:32 CST (+0800)
Last modified: 2012-06-07 04:28:06 CST (+0800)
Viewed: 44 times, last viewed: 2016-10-26 14:48:15 CST (+0800)
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