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Specimens of luzernensis I have collected…
By: Dave W (Dave W)
2018-09-25 02:35:11 CST (+0800)

feature pigmented ornamentation on the stipes (gray floccose scales), a trait which appears to be lacking in this present observation (277192).

DNA shows similarity to A. luzernensis, but not perfectly.
By: R. E. Tulloss (ret)
2018-09-02 01:40:18 CST (+0800)

Also, the cap is not trizonate as is luzernensis. nrLSU of the two species is at least 0.4% difference; however we could not get data for more than 500 characters on the left hand (5’) end of the luzernensis specimens, which we could get from the present material. Thus there might be significant heterogeneity in the nrLSU region of __luzernensis_ that we don’t see here.

We do have a pretty good ITS for both species; and in that case, we do see a more substantial difference (2.8% genetic distance). Also, if the picture in sunlight is more reliable for color, the present species is shades of gray and dark gray; whereas, in luzernensis the caps pigments shades of brown or umber.

Hence, I’ll not go for luzernensis in this case…at least not yet.

I think we’ll come up with a temporary code.

Very best,


We have DNA.
By: R. E. Tulloss (ret)
2018-08-20 06:26:00 CST (+0800)

First glance (at ITS) suggests this is novel.

Very best,


Herbarium Rooseveltensis Amanitarum (RET) has received specimen.
By: mcmacher
2017-10-13 02:52:26 CST (+0800)

We have received the dried specimen. Thank you. It is being accessioned in Herbarium Rooseveltensis Amanitarum (RET).

Created: 2017-05-24 02:33:03 CST (+0800)
Last modified: 2018-09-25 02:35:12 CST (+0800)
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