Observation 141366: Amanita sect. Validae (Fr.) Singer
When: 2013-07-26
No herbarium specimen

Notes: In mixed hardwood forest. Veil and vulva present, gilled, white spores.

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Hello, Dr. Stobbs. EDITED
By: R. E. Tulloss (ret)
2013-07-30 11:18:30 PDT (-0700)

The plentiful warts on the cap and the staining of the stem argue against porphyria as a determination. In eastern Canada, the most common form of porphyria has a radially virgate sordid tan cap; and, although I have rarely seen it, the more “typical” porphyry colored cap of European illustrations also occurs in both eastern and western U.S. states with cooler climates. I assume it would also occur in Canada. I have also seen white-capped collections with the morphology and genetics of porphyria. In all the color “variants,” the partial veil is quickly gray and becomes darker with time.

The cap color and the stem color in your mushroom could both arise in mushrooms to which the name Amanita rubescens is incorrectly applied in North America.

Very best,

Rod Tulloss

Created: 2013-07-30 10:59:28 PDT (-0700)
Last modified: 2013-07-30 11:13:19 PDT (-0700)
Viewed: 25 times, last viewed: 2017-02-04 01:53:19 PST (-0800)
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