This gray Amanita sp. was collected near Oak and a Crab Apple tree in the Madelyn Marx Preserve in Kennebunk, Maine. The specimens stood about 15 cm tall and photos show morphological details. 20 Spore average is 8.9 × 7.8 microns with Q = 1.15. Intact spores are inamyloid in Melzers, but numerous ruptured spore fragments are clearly amyloid (see BF and DIC photomicrographs). The spores that were examined under the microscope were taken from a spore print (white) taken on glass.
|User’s votes are weighted by their contribution to the site (log10 contribution). In addition, the user who created the observation gets an extra vote.|
|I’d Call It That||3.0||15.43||3||(Herbert Baker,baravykas,Dave W)|
sum(score * weight) /
(total weight + 1)
Yes, quite a variation in appearance from more “normal” others just a few miles away, which I have no DNA data on, but the micro is identical.
Just goes to show there is still much work to be done in understanding the wide morphological range of many species. The fruiting bodies of fungi are quite responsive to the micro-climate and are often more variable in their general shape and appearance than we give them credit for.
100% ITS match to Rod Tulloss’s KC855217 in Genebank.
perhaps the “star foot” trait is overemphasized.
Chances are very good that we shall eventually gain a better understanding of Amanita brunnescens. The quest for macro/molecular correlations is currently underway.
I still need to work up my other collections. When I do all the micro I’ll reach out to Rod to get his opinion.
a bunch of A. brunnescens today that looked a lot like these. Some of the gray-capped amanitas showed the typical star-foot, and others in the same small patch did not. I’ll make a post.
that’s why I posted it. I collected others in Maine that are much more certainly brunnescens/ameribrunnescens. I’ll post more as I have time to do the micro. There were many, many Amanitas in Maine in early July. Amazing numbers and variety.
Also, those blue spore fragments are strange … has anyone seen this elsewhere?
abrupt split bulb, which I believe is a defining macro-character for brunnescens.
Created: 2013-07-18 13:34:38 PDT (-0700)
Last modified: 2013-10-27 00:43:42 PDT (-0700)
Viewed: 133 times, last viewed: 2017-06-16 05:14:25 PDT (-0700)