Amanita muscaria - Several photographs of this poisonous species, Fly Agaric, and an identification guide. - http://www.first-nature.com/fungi/id_guide/amanitaceae/amanita_muscaria.htm
Amanita muscaria var. persicina - Brief description and illustrations. (It's possible that some of the illustrations represented faded specimens of Amanita muscaria subsp. flavivolvata. Scroll down page to find entry. - http://www.plant.uga.edu/mycology-herbarium/GAbasidios.htm
Amanita muscaria var. muscaria - Illustrations of New Zealand material accessible from this page. - http://www.hiddenforest.co.nz/fungi/family/pluteaceae/amanita.htm
"Amanita muscaria var. formosa" - Image from Hawaii. If this is the NE N. American entity imported, then it should be labeled Amanita muscaria var. guessowii. - http://online.sfsu.edu/~ded/Pine_Forests/A_muscaria.html
Amanita muscaria subsp. flavivolvata Singer - Brief description with color image. This subspecies was originally described from near San Francisco and is morphologically quite distinct from the type variety. - http://pluto.njcc.com/~ret/amanita/species/muscflav.html