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DdaShroom
Wanna Be TI & Friend


Registered: 05/16/19
Posts: 584
Last seen: 1 year, 5 months
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All white mushroom id
#26686179 - 05/21/20 05:26 PM (3 years, 8 months ago) |
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Found in my residential neighborhood in Nebraska. Near a stump that has been cut down and has been there for a few years. Sheen/shiny cap, whitish pick gills, no veil, smell of mushroom but slightly different.
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DdaShroom
Wanna Be TI & Friend


Registered: 05/16/19
Posts: 584
Last seen: 1 year, 5 months
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Re: All white mushroom id [Re: DdaShroom]
#26686186 - 05/21/20 05:29 PM (3 years, 8 months ago) |
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Volvariella speciosa?
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ToxicMan
Bite me, it's fun!


Registered: 06/28/02
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Re: All white mushroom id [Re: DdaShroom]
#26686353 - 05/21/20 07:00 PM (3 years, 8 months ago) |
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My first thought is something closer to Pluteus petasatus.
-------------------- Happy mushrooming!
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DdaShroom
Wanna Be TI & Friend


Registered: 05/16/19
Posts: 584
Last seen: 1 year, 5 months
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Re: All white mushroom id [Re: ToxicMan]
#26686528 - 05/21/20 08:08 PM (3 years, 8 months ago) |
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Quote:
ToxicMan said: My first thought is something closer to Pluteus petasatus.
I'm spore print as we speak and will report back
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DdaShroom
Wanna Be TI & Friend


Registered: 05/16/19
Posts: 584
Last seen: 1 year, 5 months
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Re: All white mushroom id [Re: ToxicMan]
#26689098 - 05/22/20 08:43 PM (3 years, 8 months ago) |
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Quote:
ToxicMan said: My first thought is something closer to Pluteus petasatus.
What is the distinction from that that makes it Pluteus petasatus instead of Volvopluteus gloiocephalus?
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ToxicMan
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Registered: 06/28/02
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Loc: Aurora, Colorado
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Re: All white mushroom id [Re: DdaShroom]
#26689130 - 05/22/20 08:57 PM (3 years, 8 months ago) |
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Volvopluteus have a conspicuous volva at the base of the stem, and Pluteus don't. That's the most obvious feature. A feature that you see with Pluteus petasatus is that the cap is typically whitish with a small scaly area at the center of the cap, as your second photo shows.
With a microscope I'd look for the characteristic pleurocystidia on the gills (Michael Kuo has some good photos at mushroomexpert.com).
-------------------- Happy mushrooming!
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DdaShroom
Wanna Be TI & Friend


Registered: 05/16/19
Posts: 584
Last seen: 1 year, 5 months
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Re: All white mushroom id [Re: DdaShroom]
#26689155 - 05/22/20 09:08 PM (3 years, 8 months ago) |
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DdaShroom
Wanna Be TI & Friend


Registered: 05/16/19
Posts: 584
Last seen: 1 year, 5 months
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Re: All white mushroom id [Re: ToxicMan]
#26689170 - 05/22/20 09:11 PM (3 years, 8 months ago) |
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Quote:
ToxicMan said: Volvopluteus have a conspicuous volva at the base of the stem, and Pluteus don't. That's the most obvious feature. A feature that you see with Pluteus petasatus is that the cap is typically whitish with a small scaly area at the center of the cap, as your second photo shows.
With a microscope I'd look for the characteristic pleurocystidia on the gills (Michael Kuo has some good photos at mushroomexpert.com).
Im not sure about a volva and perhaps there was one there because, as shown, we snapped the stem off when picking so perhaps it was underground? Also, I attached a picture of the spore print and it seemed to be rust brown
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ToxicMan
Bite me, it's fun!


Registered: 06/28/02
Posts: 6,722
Loc: Aurora, Colorado
Last seen: 2 hours, 34 minutes
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Re: All white mushroom id [Re: DdaShroom]
#26689654 - 05/23/20 04:31 AM (3 years, 8 months ago) |
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Officially the spore print color for all of the genera mentioned in this thread is "pink", but the actual color isn't quite what you'd guess if you hadn't seen it before. To determine the color the spore print really needs to be on white paper (any white paper will do). Other backgrounds can distort the appearance. I note that, in your spore print photo, the gills still appear white. That is also a feature of Pluteus petasatus - the gills still appear white a long time compared to other pink spored mushrooms. Michael Kuo even mentions this on his web page about the species.
The volva should have been fairly conspicuous as a membranous sac like feature at the base of the stem. The presence or absence of a volva is *very* important for the identification of several genera, which is why the standard instructions for collecting a specimen say to not just snap or cut off the stem. The vast majority of people learn that bit when they collect something that might have had a volva but they didn't get the entire base of the stem.
One other reason to suspect the Pluteus over a Volvariella or Volvopluteus is that Pluteus species are many many times more common than Volvariella or Volvopluteus. Of course rare mushrooms are found also, but the odds are stacked.
-------------------- Happy mushrooming!
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