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Mushrooms, Mycology and Psychedelics > Mushroom Hunting and Identification
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Giant White Mushroom (Agaricus arvensis????) New pics
    #8479948 -

Found these while hunting in a large field near the coast in Seattle. There were MANY of these out there and some were simply huge. I mean there were un-opened caps the size of softballs. Most had been nibbled on by rabbits. Even caught one in the act.




Is this anything worth cloning?


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Message me for free microscopy services on Psilocybe, Panaeolus, and Gymnopilus species.

Looking for wild Panaeolus species prints. Msg me for trades.

Edited by BlimeyGrimey (06/07/08 12:05 AM)

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Re: Giant White Mushroom Needs ID [Re: BlimeyGrimey]
    #8480124 -

I havent attmepted to ID them yet but I found some in NJ a few days ago. very very large indeed.

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Re: Giant White Mushroom Needs ID [Re: Dishez]
    #8480233 -

Looks like sum kinda agaricus with the pink gills, were there others with brown gills agaricus have brown gills when mature pink when young.

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Re: Giant White Mushroom Needs ID [Re: BlimeyGrimey]
    #8480253 -

Rabbits eating them is interesting.

They are an agaricus, look like Agaricus arvensis, though the caps are little shaggier then I remember arvensis to be. Maybe something closely related. Arvensis have a slighty almondy smell.

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Re: Giant White Mushroom Needs ID [Re: falcon]
    #8480307 -

Thanks, I was suspecting the genus Agaricus but as you said the shagginess makes it seem odd. I forgot to note that if you scratch a piece of the tissue it turns yellow. A definite sign of the genus Agaricus.

The matchmaker site for PNW mushrooms gave me 2 ID's.

Agaricus xanthoderma and Agaricus campestris but I think Agaricus arvensis seems a better fit.


--------------------
Message me for free microscopy services on Psilocybe, Panaeolus, and Gymnopilus species.

Looking for wild Panaeolus species prints. Msg me for trades.

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Re: Giant White Mushroom Needs ID [Re: BlimeyGrimey]
    #8480378 -

yes i was thinking agaricus arvensis

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Re: Giant White Mushroom Needs ID [Re: BlimeyGrimey]
    #8480477 -

Yeah, that's much too large for A. campestris. It doesn't really resemble A. xanthodermis either.

Since it bruises yellow, you also need to note the odor. Typically the odor is strongest where the cap and stem join. If you can't detect any particular odor, try crushing the stem base and sniffing there.

Agaricus is a difficult genus, so don't be surprised if you have trouble making an ID.

Happy mushrooming!


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Happy mushrooming!

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Re: Giant White Mushroom Needs ID [Re: ToxicMan]
    #8480607 -

I went ahead and smelled the mushroom after cutting the stem. Smells kinda like oyster mushrooms, that same anise smell.


--------------------
Message me for free microscopy services on Psilocybe, Panaeolus, and Gymnopilus species.

Looking for wild Panaeolus species prints. Msg me for trades.

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Re: Giant White Mushroom Needs ID [Re: BlimeyGrimey]
    #8480714 -

:crazy2:oh  my god that  the most big  agaricus  pin i have seem and perfect , dont wait  no time clone that  fella ,
iam drooling with the idea of the smell of those mushrooms ,  save us all  and try to grow that agaricus have special propeties that can make you day .
whoa :whoah:


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cuando una rafaga del pensamiento nos pasa  al lado se puede sentir  que valio  la pena  haber vivido, y cuando ese pensamiento se  convierte en sueño no paramos de soñar hasta realizarlo

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Re: Giant White Mushroom Needs ID [Re: cactu]
    #8481760 -

Maybe I'm nuts, but are you guys sure the two pictures are of the same mushroom? That white one does not look like an Agaricus, but rather an Amanita. Look at the concentric rings at the base, the overall fuzziness.

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Re: Giant White Mushroom Needs ID [Re: xmush]
    #8481816 -

no agaricus have rings like that sumtimes, even a veil like amanitas.

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Re: Giant White Mushroom Needs ID [Re: xmush]
    #8482228 -

xmush said:
Maybe I'm nuts, but are you guys sure the two pictures are of the same mushroom? That white one does not look like an Agaricus, but rather an Amanita. Look at the concentric rings at the base, the overall fuzziness.


It does appear that the older ones have rings at the base as well.Looking at the pin I'd think it was an Amanita.Still you might be right.

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Re: Giant White Mushroom Needs ID [Re: cactu]
    #8482247 -

I'll be going back this morning to photograph some more and pick the largest specimen I can find for cloning.

The pics are of the same type of mushroom. The new pics will show that I hope.

I still believe it is Agaricus arvensis, the Horse Mushroom.


--------------------
Message me for free microscopy services on Psilocybe, Panaeolus, and Gymnopilus species.

Looking for wild Panaeolus species prints. Msg me for trades.

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Re: Giant White Mushroom Needs ID [Re: DannyGlick]
    #8494805 -

Well here's the new photos. Unfortunately my camera's batteries were dead and I didn't get any in-situ photos but a friend did. I'll post those once he emails them to me.

Here's the new better pics.

The big one!!


There was actually a bigger one, ALOT bigger but it had alot of slug damage and was a little moldy on the cap so I cut off a big chunk of its stem for possible cloning.


The gill shots of young and slightly maturing to show the gill's color change. Also note the tubes on the cut stem.



The last pic of the veils and stems.


--------------------
Message me for free microscopy services on Psilocybe, Panaeolus, and Gymnopilus species.

Looking for wild Panaeolus species prints. Msg me for trades.

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Re: Giant White Mushroom Needs ID [Re: BlimeyGrimey]
    #8495730 -

As long as there's no reddish colored bruising visible, then i'd say they were Horse Mushrooms.

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Re: Giant White Mushroom Needs ID [Re: Hotnuts]
    #8495771 -

It's yellow bruising you want to be afraid of in Agaricus though.  It can take significant trauma and a bit of time before the yellow stainers will show their stain.  Also, the toxic ones don't smell all nice like the edibles, though I'm not sure how broadly that applies.

Pretty mushrooms though.  I lump Agaricus into three categories: Edible, Toxic, Maggot-infested.  I only go all the way to species if I'm feeling especially nerdy.

Edit: I should mention that arvensis will stain yellow a bit, but they smell lovely.  Also, I agree that you have arvensis after looking at that first pic that I thought looked like an Amanita or Chlorophyllum.  Great find!

Edited by xmush (06/07/08 10:10 AM)

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