Jump to content

Agaricus or Leucoagaricus?


Duggstar

Recommended Posts

Posted

Habitat:
Ireland, roadside, at the base of a deciduous tree.

Gills:
Pale pinkish grey in the smaller specimen, less pink in the larger one.

Stem:
140mm
long, 30mm diameter, thick white ring that stains pink on handling,
stem stains faintly yellowish pink shortly after handling as does the
cap.

Cap:
120mm Diameter, silky, minutely scaly.

Spore print color:
In progress

Flesh:
Thick, white, turns very slightly pinkish a few minutes after cutting fading to yellowish.

Smell:
Faintly of almonds.

post-924-0-19548600-1415942295_thumb.jpg

post-924-0-36899100-1415942314_thumb.jpg

post-924-0-44459700-1415942333_thumb.jpg

post-924-0-67231300-1415942353_thumb.jpg

post-924-0-01599000-1415942374_thumb.jpg

post-924-0-05317200-1415942392_thumb.jpg

post-924-0-95151000-1415942411_thumb.jpg

post-924-0-46407400-1415942430_thumb.jpg

post-924-0-54226600-1415942449_thumb.jpg

post-924-0-39453300-1415942468_thumb.jpg

Posted

The one with the unexpanded cap (4th photo) looks like Agaricus, maybe one of the species in the A. arvensis group. But the one in the 1st few photos looks like Leucoagaricus.

Spore prints will tell.

Posted

The big one, which you thought might be Leucoagaricus printed dark vinaceous brown. The other one I didn't print but I assume it's the same species. I found them only inches apart and they have the same odour.

I was thinking they might be Agaricus excellens, a rare Agaricus?

Posted

Dark vinaceous brown certainly eliminates Leucoagaricus from consideration.

An interesting find, Duggstar. Like you say, probably Agaricus.

  • 4 weeks later...
Posted

Yup, probably Agaricus... Since you have posted this, you have probably observed the gills going from white to pink to black.

Posted

Some types of Agaricus have gills that go almost directly from pale/gray to brown without a pink stage. The third photo shows gills with color unusually close to white for an Agaricus. Duggstar, how would you describe the color of the gills in photo #3? Sometimes lighting can affect the apparent color in a photo. These are really interesting. Thanks for sharing.

Posted

Dave, they were very pale pinkish grey, but they turned directly to brown as they dried.

post-924-0-54891300-1418402015_thumb.jpg

The herbarium I sent it to said the spores were too small for it to be A. urinascens var. excellens though

"The spores on your specimen are too small to be those of Agaricus
urinascens (=excellens). I make it Agaricus macrocarpus because of its
plain white colour without scaliness, lack of colour reaction (yellow,
red) on cutting, large size and spore dimensions."

Archived

This topic is now archived and is closed to further replies.

×
×
  • Create New...

Important Information

Terms of Use | Privacy Policy | Guidelines | We have placed cookies on your device to help make this website better. You can adjust your cookie settings, otherwise we'll assume you're okay to continue.