Observation 145010: Amanita amerifulva Tulloss nom. prov.
When: 2013-09-07

Notes: Found on the Indian Trail near the Mountain Lake Conservancy Lodge/Hotel. The trail is mixed forest with many conifers and some remaining hemlock. The mushroom has a universal veil/volva attached at the stem (and cap of the younger specimens). The stem is long, smooth, and thin; white with some ochre/tan closer to the base; pretty uniform (not bulbous at all). The cap is slightly viscid with a small bump in the center. It is darkest at the center and its color is copper/ochre/brown at the center, becoming whiter as it reaches the edge. The cap is noticeably ridged and the gills on the mature specimen are markedly visible from the side (striate). No spore print, but spores are likely white as the gills did not change color with age.

ID’d by staff at the 2nd Annual Joint Appalachian Foray as the Tawny Grisette (Amanita fulva).

The small initial photo is one specimen available. The other is not pictured but is slightly older with an opened cap, found nearby and similarly ID’d.

Proposed Names

1% (2)
Recognized by sight
Used references: ID’d by staff at 2nd Joint Appalachian Foray

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Eye3 = Observer’s choice
Eyes3 = Current consensus

Comments

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Who knew!
By: Willow Nero (wbnero)
2013-09-09 14:09:59 EDT (-0400)

I’m not exactly sure what all that even means right now, but I might soon. I’m in a course at NIH in which we plan to create personal and class herbaria and post photos/GenBank results to MO. I’ll share your comment with our teachers, so I can best contribute to our understanding of Vaginatae.

DNA? My interest is piqued.
By: R. E. Tulloss (ret)
2013-09-09 14:04:59 EDT (-0400)

What loci will you run? nrITS? nrLSU? Are you in a position to use bacterial cloning methods if you get chaotic initial runs from more rapid sequencing?

I will be very interested in your results because Amanita sect. Vaginatae is so undersequenced. Moreover, there are too few available names (which results in less than completely useful GenBank postings of sequences). I’d like to know more about what you’re doing with Amanita sequencing. I’m involved in several such projects and want to be up-to-date with regard to what is happening on molecular studies of the Amanitaceae.

Very best,

Rod

Thank you!
By: Willow Nero (wbnero)
2013-09-09 13:36:25 EDT (-0400)

I’ll make sure we start using this name then. I hope to run the DNA on this one and see if I match you.

Amanita fulva is a European taxon.
By: R. E. Tulloss (ret)
2013-09-09 13:23:08 EDT (-0400)

The eastern North American species is distinct. The name fulva is used all over the world; however, it seems to be restricted to Europe and adjacent western Asia.

Very best,

Rod Tulloss

Created: 2013-09-09 13:11:14 EDT (-0400)
Last modified: 2013-09-09 13:42:47 EDT (-0400)
Viewed: 40 times, last viewed: 2016-10-20 17:17:56 EDT (-0400)
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