Observation 15940: Amanita smithiana Bas


Proposed Names

33% (3)
Used references: found at the base of a Douglas fir in mixed conifer forest <1 mile from coast; no bruising; odor of turnips when the base was cut; Mushrooms Demystified; help from Debbie Viess and Hugh Smith; what bothers me is the cinnamon fibrils on the cap

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= Observer’s choice
= Current consensus


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hey Ryane, just saw your notations on this one…
By: Debbie Viess (amanitarita)
2009-02-15 10:19:37 CST (-0500)

I also collected a disturbingly reddened smithiana in Oregon at a Breitenbush weekend…and was assured by the more experienced OR smithiana collectors that indeed they sometimes show red staining on the caps…may be environmentally caused. You can see the example that i collected in this “group” photo of smithiana from MO; look for the fat button in the center of the group. http://tiny.cc/8OayV

Of the species under consideration, this can only be smithiana…
By: R. E. Tulloss (ret)
2009-01-18 12:39:59 CST (-0500)

Microscopic structure of universal veil and size-shape of spores supports Amanita smithiana as the determination.


I wonder,….
By: R. E. Tulloss (ret)
2009-01-03 15:03:25 CST (-0500)

Yes, it could be an Amanita….

Is there any hope of collecting this material?

There is a taxon known from southern California that is desribed as having a rusty ring around the base of the stipe (Amanita subcaligata). I don’t know of any color picture of the species. The warts of that species are often more suggestive of those of A. magniverrucata…that is, they wouldn’t be expected to take the form seen in Ryane’s interesting pictures. Note that several place that display bits of universal veil have those bits sharing the cinnamon color of the apparent volva on the cap. This suggests that the universal veil is originally cinnamon or has a tendency to stain cinnamon throughout.

I’d like to know more about this collection. Could a little volva be scraped off and photographed in a water mount under about 150X or better magnification?
I’d like to know what shape the inflated cells of the volva take.

There is a page dedicated to A. subcaligata on the “Amanita Studies” web site.

Very best,