Observation 194546: Amanita sect. Lepidella sensu Bas
When: 2014-12-22

Notes: Solitary fruit-body growing under Manzanita and Chinquapin nearby.
Cap 3.5 cm across with chunky detersile warts that are yellow-brown on top.
Spore print white and spores amyloid.
Spores ~ 8.9-13.1(15.0) X 5.1-8.9(9.8) microns, ellipsoid to elongate and smooth.
Q(range) = 1.46-1.76
Q(ave) = 1.60 ; n=25
This one is new to me??

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Ha ha, Ron.
By: R. E. Tulloss (ret)
2014-12-24 17:51:07 GMT (+0000)

Emotional response understood.

I got very lucky when I found a large cluster of large fruiting bodies of A. subsolitaria in the pine barrens. One or two were yellowing. One mushroom in particular was really suffering, oozing orange and with a cap that came off in my hand. Rather than tell the whole story again:

http://www.amanitaceae.org?Amanita%20subsolitaria

has a few oldish pictures and a lot of details, if I remember correctly.

Very best,

Rod

I think the entire base is there,
By: Ron Pastorino (Ronpast)
2014-12-24 17:13:03 GMT (+0000)

if you blow up the first photo you can see the rhizos.
However, they still look similar and the habitat was the same.
The after-yellowing was not really evident in mine.
Did you look at the spores?
I hate solitary fruit-bodies!

did you collect the entire base?
By: Debbie Viess (amanitarita)
2014-12-24 16:48:45 GMT (+0000)

if so, this is not similar to what I just posted, which, altho also an unknown yellowing lep, definitely had a rooting base.

Well, we could try chemistry….
By: R. E. Tulloss (ret)
2014-12-24 14:18:41 GMT (+0000)

I’m quite curious to see what could be learned from trying for DNA from this collection. If you’d like to send a piece, we can put this critter in the queue. Expected time of arrival of DNA is probably months away for us at this time. Perhaps, you could get the experiment to happen faster closer to home. If not, our post office box is ready to accept input.

I wish you and yours a happy and productive 2015.

Very best,

Rod

I dried it pretty fast and
By: Ron Pastorino (Ronpast)
2014-12-24 03:59:48 GMT (+0000)

I don’t think there was any more yellowing when I cut it.
The dried material is basically white except for the warts which are a little browner.
Even if I imagine the specimen larger and without the yellow, I can’t think of what it might be, at least for west coast material that I can recall?

Of course, it might not be a case of the yellowing syndrome; but….
By: R. E. Tulloss (ret)
2014-12-24 03:34:23 GMT (+0000)

R

When I find a species of section lepidella with bright yellow on it,…
By: R. E. Tulloss (ret)
2014-12-24 03:33:13 GMT (+0000)

I suspect the yellowing syndrome (cause unknown). Imaging a more robust fruiting body without yellow and imagine the spores to be longer, lacking in irregularities, and with higher Q. Does this match an already known species? If this is the case, you may be seeing an example of that species with yellowing syndrome. I am over simplifying this only slight. Does the yellow take over more of the fruiting body as time passes? Does the flesh turn yellow when you cut it? This may happen slowly at first, but then more rapidly if you make another cut a few hours later.

I’ll be curious to know how this turns out.

Very best,

Rod

Created: 2014-12-23 21:34:37 GMT (+0000)
Last modified: 2014-12-23 21:38:07 GMT (+0000)
Viewed: 66 times, last viewed: 2016-10-28 11:16:17 BST (+0100)
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