When: 2015-06-29

Collection location: Eno River State Park, Durham, North Carolina, USA [Click for map]

Who: Jennifer (jabdo)

No specimen available

I was very dumb and didn’t dig this one up (apologies!), but maybe folks can still help?

I was calling all that look like this A. cokeri until a friend alerted me to A. daucipes and A. rhopalopus, so now I’m not sure.


Proposed Names

57% (1)
Recognized by sight: Warts on cap are too flat for cokeri.
28% (1)
Recognized by sight

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Add Comment
Amanita cokeri would have pyramidal warts.
By: R. E. Tulloss (ret)
2015-07-14 20:42:35 PDT (-0700)

Pyramidal warts are a result of the tissue in the warts having a strong vertical orientation. A. cokeri doesn’t show brick red staining. Very often there are rings of large recurved scales around the upper part of the bulb in A. cokeri.


Amanita rhopalopus shows brick red staining and has volval warts that are fluffy rather than having smooth sides because the volval tissue is disordered with lots of inflated cells. The bulb of rhopalopus has subtle thin rings of volva around the upper part and ranges from dog-legged and sausage-shaped to top-shaped.


Amanita daucipes has very strong vertical orientation in the tissue of the volva on the cap. This results in cake-like patches, needle-like warts, and pyramidal warts (sometimes all on one cap). There is staining as in rhopalopus. THe bulb is carrot-shaped. Often there are vertical splits in the bulb. Often there is felted, partial ring (not the partial veil), lying loosely on the top of the bulb [a remnant of the part of the volva that was (during development of the mushroom) in the space between the stem, the bulb, and the outer ends of the gills].


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Very best,