Amanita magnivelaris (Amanita)

Amanita magnivelaris Sites:

Amanita magnivelaris Amanita magnivelaris: image and discussion of this species (French). The Quebec collections of Yves Lamoureux are very interesting because some of them react positively (yellow on stipe) to KOH whereas what has been considered this species in the eastern U.S. does not so react (Amanita magnivelaris) http://www.mycomontreal.qc.ca/portraits/amanite.htm