Observation 189853: Amanita pachycolea D.E. Stuntz
When: 2014-11-26
No herbarium specimen

Notes: I would have taken better volva photos had I known the importance in distinguishing this from A. constricta. Growing under oak.

Proposed Names

0% (2)
Eye3 Eyes3
Recognized by sight: Dark grey-brown cap with thick white patch of veil remnant, radial striations toward cap margin, volva present, annulus absent

Please login to propose your own names and vote on existing names.

Eye3 = Observer’s choice
Eyes3 = Current consensus

Comments

Add Comment
There seems to be a little confusion about pachycolea on MO over recent weeks.
By: R. E. Tulloss (ret)
2014-11-27 15:21:11 CST (-0600)

The species is quite dark colored, and is quite elegant. Even small specimens will often have a notably elongate stem (although thinner than normal). The volval sac is proportionately quite large and is quite thick. In these characters (color aside) it is most similar to European taxa such as A. pachyvolvata and A. magnivolvata and to the eastern U.S. species A. violettae. None of these species are terribly common in their home regions.

Check

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

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

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

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

Take a look at information about the size of the stem versus the width of the cap and the size of the volva.

Very best,

Rod

Created: 2014-11-27 14:53:22 CST (-0600)
Last modified: 2014-11-27 15:14:49 CST (-0600)
Viewed: 21 times, last viewed: 2016-10-23 17:49:35 CDT (-0500)
Show Log