Observation 59145: Amanita sect. Vaginatae sensu Zhu L. Yang
When: 2010-05-22
No herbarium specimen

Notes: Growing on lawn

[admin – Tue Feb 08 12:34:59 +0000 2011]: Changed location name from ‘Murfreesboro, Rutherford Co., Tennessee, USA’ to ‘Murfreesboro, Tennessee, USA

Proposed Names

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Eye3 = Observer’s choice
Eyes3 = Current consensus


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I’m Sticking with A. vaginata
By: Brian Adamo (adamo588)
2010-11-18 13:38:20 CST (-0500)

Hi, Rod,

Thanks for the information. I was not aware of all the permutations of genus Amanita – that website is incredible.

I think you may be confusing some soil sticking to the cap for warts though, as I just shot them as I found them and didn’t clean ‘em up for the pictures. As you can see, there are also white patches on the cap surface – which my field guides (Audubon, Peterson) say is a feature of A. vaginata. I wish I had dug them up and photographed the base, but I was just beginning to have an interest in mushrooms when these were found, and didn’t sweat the details! The field guides also state that A. vaginata is widely distributed throughout North America and the Peterson guide (McKnight) states they are “Common on lawns in eastern U.S summer and fall”

If you feel strongly about the i.d. feel free to change the name on the observation, and let the community vote on it. It won’t be the first time I’ve been proven wrong!

I have only just discovered mushroomobserver,org and have been uploading all the pictures I have taken in the past year, with my best attempts at identifications. A few of them have been corrected by those more knowledgeable than myself. What a great resource!



very weak, graying volva…
By: R. E. Tulloss (ret)
2010-11-18 12:26:57 CST (-0500)

Hello, Brian,

This Amanita probably belongs in the vaginata group in a broad sense (in section Vaginatae). Because the volva left grayish warts on the cap instead of remaining has a membranous, whitish sack around the base of the stem (and because the mushroom grew in North America rather than Eurasia), it is very probably not A. vaginata.

So what could it be?

First of all, you might have two different kinds of mushrooms involved in this posting. Check out the length of the striations (grooves) on the cap edge in the top two photos versus the third photo. And the fourth photo? The cap shape is different from the shape of the caps in the other pictures; so the cap was more mature than others you photographed; and, consequently, those of us looking at your observation can’t be sure that it is the same species as the first three.

Back to the first two vs. the third: In particular, check out the ratio of the length of the grooves to the radius of the cap. It looks to me as though the grayer caps in the first two pictures have proportionally shorter striations than does the browner cap. This and the difference in cap color COULD suggest two different species.

One possibility for an ID is A. borealisorora (the name is provisional, but the mushroom is very real and is widely distributed in eastern North America). You can find out more about it here:


I hesitate to suggest a name myself.

Two suggestions that will help those who offer IDs.

1. Separate mushrooms that look different in separate observations. The worse thing that can happen is that someone says they are the same species. No big deal.

2. Take pictures of the stems out of the ground so we can see the base of the stem. This is REALLY useful for ID…especially in the genus Amanita…but in lots of other genera also.

Very best,


Created: 2010-11-18 09:37:54 CST (-0500)
Last modified: 2011-05-24 15:05:38 CDT (-0400)
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