When: 2013-04-20

Collection location: Salt Point State Park, Sonoma Co., California, USA [Click for map]

Who: George Riner (mycogeo)

No specimen available


The partial veil is not present. Whether it was present and fell off, or was never present to begin with, is not known.

Observe the grey material deposited along the stem where the ring would be, and just above the basal bulb.

Non-striate margin, cap clear of any universal veil, streaked with greyish-brown radiating color.

spores amyloid. the potato oder was present when fresh.


Proposed Names

75% (2)
Recognized by sight: a rather brownish-capped version
Used references: Mushrooms of Pacific Northwest, Trudell & Ammirati, 2009, p. 87

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

= Observer’s choice
= Current consensus


Add Comment
Interesting that this one species name…
By: Dave W (Dave W)
2017-03-19 19:39:56 EDT (-0400)

is applied to both eastern and western NA examples. According to the Amanita Studies Website, the same name also applies to a European taxon.

I find this type most often in birch woods, sometimes with beech and/or hemlock present, eg. obs 256359. Doesn’t seem to like oak very much.

it’s a private Facebook group
By: Debbie Viess (amanitarita)
2017-03-19 15:01:17 EDT (-0400)

not open to all.

A. porphyria can occur with a fairly wide variety of trees worldwide, including hardwoods, in its broad northern range, but here on the west coast I have only ever seen it with conifers.

In a mixed woodland, the tree host is anyone’s guess.

Here’s the link if it works:
By: Mike McCurdy (lesmcurdy)
2017-03-19 13:39:01 EDT (-0400)
By: Mike McCurdy (lesmcurdy)
2017-03-19 13:35:05 EDT (-0400)

I asked because one was just posted on Noah’s FB Cal ID site that was growing with tan oak/madrone found at SPSP. It looks right, actually dead on,
but I was trying to find a reference to another find outside of pine or spruce. So far, I haven’t.

By: Debbie Viess (amanitarita)
2017-03-19 13:10:30 EDT (-0400)

grows with conifers.

Just saw this obsie of yours, George. Your ID was correct. You can clearly see the gray veil material (both UV and PV), the abrupt bulb, the purplish brown cap that fades to a silvery gray and that distinctive raw potato odor!

Do you remember…
By: Mike McCurdy (lesmcurdy)
2017-03-19 12:44:36 EDT (-0400)

what habitat it was found in?

Created: 2013-04-22 15:25:35 EDT (-0400)
Last modified: 2017-03-19 13:13:00 EDT (-0400)
Viewed: 79 times, last viewed: 2020-08-18 20:23:16 EDT (-0400)
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