Observation 212857: Amanita franchetii (Boud.) Fayod
When: 2015-08-07
No herbarium specimen

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All the images alone or grouped.
By: R. E. Tulloss (ret)
2015-08-15 14:02:31 CDT (-0400)

With regard to the ceciliae-like amanitas, I think there are a goodly number. With some colleagues, I am looking at the taxa that were once mis-labeled as ceciliae in eastern North America. We are using morphology and DNA sequencing. Because of the molecular work, we are finding that there are quite a number of them that were not expected. A few have very similar cap coloration, at least one has an albino variant. Slowly, we are progressing. Some examples can be seen under provisional names or temporary codes on the www.amanitaceae.org website. The morphological descriptions are still incomplete, the number DNA sequences is growing bit by bit.

For example:

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

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

http://www.amanitaceae.org?Amanita%20sp-V03

http://www.amanitaceae.org?Amanita%20sp-QUE03

http://www.amanitaceae.org?Amanita%20sp-56

http://www.amanitaceae.org?Amanita%20sp-N59

http://www.amanitaceae.org?Amanita%20sp-N61

http://www.amanitaceae.org?Amanita%20sp-xanthomitra

etc.

As you will see, some of the apparent species are not separable by spore size and shape…at least according to the data at hand.

I have also examined morphologically and genetically other taxa with graying or otherwise darkening volva that have a slightly less friable volval sac such as A. sinicoflava, A. submembranacea, “A. reidiana,” A. liquii, and A. olivaceogrisea. These taxa are not too distant genetically from the ceciliae group. The group is also represented in Australia (at least in some eastern states). I have material from several European countries that was all identified originally as ceciliae. So far I have no two collections that share the same DNA sequences. The true ceciliae has very large spores and has a cap that is brassy yellow at first before turning brown. The original material of ceciliae was collected at King’s Cliff in the U.K.

I miss the Netherlands. I used to be in the Amsterdam-Leiden areas four of five times a year…20 years ago. And I miss the voices of Kees and Fenna Bas. You probably know that dr. Bas was my mentor in mycology.

met vriendelijke groeten,

Rod

Thank you for your compliment!
By: MichelBeeckman (MichelBeeckman)
2015-08-15 11:24:44 CDT (-0400)

Although I wonder if you mean the collage of Amanita franchetii, or my other observations too?
I like turning my photos into collages. It shows all the important characteristics in one view. If I had more time when I found these specimens, I would have made a cross section to show the inside.
If you haven’t seen my other observations, I recommend the one of Amanita gemmata, which I think you will like too!
Lastly, I would like to ask you some questions about an Amanita from the section Vaginatae, specifically from the Ceciliae group. I will upload photos and the specific issues with this species later this week. Maybe you can shine your light on this issue we are currently discussing in the Netherlands.

Best regards,
Michel Beeckman

An interesting collection of images.
By: R. E. Tulloss (ret)
2015-08-14 18:19:42 CDT (-0400)

Thank you, Michel.

Rod Tulloss

Created: 2015-08-14 18:12:19 CDT (-0400)
Last modified: 2015-08-14 18:12:25 CDT (-0400)
Viewed: 49 times, last viewed: 2016-10-27 14:56:47 CDT (-0400)
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