Observation 25359: Amanita ravenelii (Berk. & M.A. Curt.) Sacc.
When: 2009-09-15
No herbarium specimen

Notes: I found these mushrooms growning a few feet from the road on the edge of a forest. They were growing in heavy leaf litter as well as man made litter. The largest example was approximately 7 inches in diameter with a height of appoximately 9 inches with the majority of the mushroom an off white color . The cap on the mature specimen has a warty texture on the top while the underside is gilled with a slightly upturned profile that exposes the gills. The stipe is slender in comparison to the large cap with a ring and a nubby texture.There is white residue that has sluffed off the larger mushroom and can be seen on the leaves where it is growing. The smaller example has a more domed appearance with the beginings of warts on the top of the cap and along the outer edges the warts being slightly darker in coloration than the rest of the cap almost the same color a marshmellow gets when it is toasted to use an unscientific description. The most immature example has a thick stipe and a bulbus cap also showing the begining signs of warts. All three examples were growing within inches of each other.

Proposed Names

18% (2)
Recognized by sight: one of the lepidellas.

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Eye3 = Observer’s choice
Eyes3 = Current consensus

Comments

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Kate, please don’t wait
By: R. E. Tulloss (ret)
2009-09-25 07:49:39 CDT (-0500)

It is very interesting to see yellow (or yellowing) specimens of specis in Amanita section Lepidella. There is apparently one or more agents that can “infect” amanitas that cause them to become yellow and/or to stain yellow when cut. I’ve called this the “yellowing syndrome.” No cause has been identified. Because the “syndrome” is common in Amanita subsolitaria, I included some observation on the syndrome in the webpage on A. subsolitaria on the Amanita Studies website. You might take a look there for some picture of subsolitaria suffering from the syndrome.

Very best,

Roed

Thank You so much. Amanita’s are natures Cadillac.
By: kate (kate)
2009-09-16 20:38:13 CDT (-0500)

Thank you Debbie and Rod. I am curious to know if this Amanita ravenelii can also exhibit a light lemon yellow hue? I have other images of what appear to be the same mushroom however it is smaller with the color of very light lemon yellow. Shall I post it for your take on it? Both examples where located in the same forest with in approxamately 100 to 150 yard separating them. Kate

gorgeous thumbnail, Kate. great detail.
By: Debbie Viess (amanitarita)
2009-09-16 10:27:14 CDT (-0500)
The warts seem to have vertically striate (eroded) faces on the pyramids…
By: R. E. Tulloss (ret)
2009-09-16 08:15:07 CDT (-0500)

This is a field character for Amanita ravenelii (distinguishing it from _A. rhoplopus, for example).

R

Created: 2009-09-15 22:37:31 CDT (-0500)
Last modified: 2009-09-15 22:37:31 CDT (-0500)
Viewed: 114 times, last viewed: 2016-11-29 12:18:46 CST (-0600)
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