Observation 106883: Amanita sect. Vaginatae sensu Zhu L. Yang

When: 2012-08-24

Collection location: Ellicott City, Maryland, USA [Click for map]

Who: Cory Zanker (cz27)

No specimen available

These two were growing a few feet apart, exact same coloration (grey with a blue or purple* tint). One in the grass, the other in the mulch by an oak tree. 3-4 inches tall.

*I’m colorblind, could be either.

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My impression is…
By: R. E. Tulloss (ret)
2012-08-29 13:02:29 AEST (+1000)

that squirrels (and probably other animals) eat them.


Thanks, Rod
By: Cory Zanker (cz27)
2012-08-29 12:44:37 AEST (+1000)

Next time I see a mushroom like this one, I’ll dig it up. These ones were gone the next day.

Probably symbiotic with the oak that you mentioned.
By: R. E. Tulloss (ret)
2012-08-28 22:31:02 AEST (+1000)


It would be very nice if you could carefully dig under these mushrooms and dig up the base to show us. It probably has a white sac-like volva around the base of the stem. What you depict looks a lot like a species I have in my lawn near an oak. Here in central Jersey, this undescribed species is very common under oak in lawns (it’s on the public school grounds in my town). If yours is the species about which I’m thinking, then the volval sac may easily come off of the stem and be rather easily broken.

I think you can be confident that it is not a poisonous species of Amanita. In North America, sect. Vaginatae doesn’t seem to contain any poisonous species. (I’ve worked with NJ poison control for more than two decades as well as studying the Amanitaceae for more than three decades.)

Very best,


By: Cory Zanker (cz27)
2012-08-28 13:46:30 AEST (+1000)

these would be the first amanitas i’ve found in my yard.. can’t remember if there were signs of a veil. poisonous?

on another note, i wasn’t sure whether this one was amerifulva or vaginata:

any tips or advice on distinguishing would be appreciated.

I think that this one of the undescribed Vaginatae.
By: R. E. Tulloss (ret)
2012-08-28 13:18:49 AEST (+1000)

It’s unlikely to be fulva, which doesn’t occur in North America.


Created: 2012-08-26 08:11:47 AEST (+1000)
Last modified: 2012-08-28 13:57:23 AEST (+1000)
Viewed: 42 times, last viewed: 2017-06-14 13:13:45 AEST (+1000)
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