When: 2016-08-07

Collection location: Chubb Trail, Eureka, Missouri, USA [Click for map]

Who: Patrick Harvey (pg_harvey)

No specimen available

Notes:
The ants can have it.

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I suspect that the various yellowish rubescent amanitas
By: Debbie Viess (amanitarita)
2016-08-08 08:49:51 MST (-0700)

can be difficult to separate to species in every instance even in hand, let alone by photo.

As to a yellow UV, yup, it can indeed appear in other rubescent species.

Here is a pull-quote from Rod’s Amanita flavorubens page:

“In the original description, the authors of this species mention its similarity to Amanita rubescens Pers. : Fr. of Europe; in the watercolors of George Morris (Peabody Museum, Salem, Mass., USA) the present species is labeled “yellow form of A. rubescens”. It seems clear that the rubescent taxa of eastern North America (the present species, A. rubescens var. alba Coker, and A. rubescens in the sense of eastern North American authors) do form a closely related group. In addition to the bruising reactions, all three of them at least occasionally have a yellow volva. The present species can be differentiated from its two sister taxa because of the color of the cap, a frequently slower staining reaction, spores that are on average longer, and spores that on average are proportionately narrower. For distinguishing between rubescent taxa in section Validae, refer to the Key of rubescent taxa in Amanita section Validae."

BTW, that is some dramatic wine staining on the amanita base! Thanks for sharing.

Re: Amanita rubescens group
By: Patrick Harvey (pg_harvey)
2016-08-08 08:26:31 MST (-0700)

What other members of the Amanita rubescens group have yellow warts?

Looks like
By: walt sturgeon (Mycowalt)
2016-08-07 19:02:22 MST (-0700)

one of the Amanita rubescens group.