Observation 44914: Amanita vernicoccora Bojantchev & R.M. Davis

When: 2010-04-30

Collection location: Junction City, Trinity Co., California, USA [Click for map]

Who: RW Rockwell (Fungal Cowboy)

No specimen available

Solitary specimen emerged at my home in a shaded area in dry, rocky soil near Douglas Fir, small madrone stumps, and young white oaks. Distinct, large cup-shaped volva. Skirtlike veil remnant on cream-colored stipe prominent, folded and matted down. Cap pale yellow with central area of white, dried veil tissue – no warts. Center of stipe hollow and filled with white cottony material. Light, pleasant, seafood odor to underside of cap, particularly upon breaking. See photos for size comparison to my hand.


Specimen removed. Note large cup-shaped volva, veil ring matted to stipe, and striations on cap perimeter.
Initial observation, emerging from substrate on 4-28-10.
Cap development 24 hours after initial observation.
Cap surface on 4-30-10
Cap development 48 hours after initial observation.
Specimen in hand for size comparison.
Specimen in hand, showing gills.
Close-up of gills and apex of stipe.
Stipe cross section, showing hollow center filled with cottony material.

Proposed Names

83% (1)
Recognized by sight: Pale color, spring fruiting
Used references: Bojantchev, D., Pennycook, S. R., Davis, R. M. 2011. Amanita vernicoccora sp. nov. —the vernal fruiting ‘coccora’ from California. Mycotaxon, Volume 117, July-September 2011. Available at http://www.ingentaconnect.com/....

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

Eye3 = Observer’s choice
Eyes3 = Current consensus


Add Comment
most likely with Douglas Fir…
By: Debbie Viess (amanitarita)
2012-06-29 11:32:29 PDT (-0700)

which is also one of its known hosts in OR and WA states.

Amanitas in very different sections (Phalloides vs Caesarea) do NOT intergrade.

ID mistakes are the most common way to get poisoned by eating a purportedly edible amanita. Vernicoccora can resemble both phalloides and ocreata, and phalloides in particular is spreading its western distribution as well as gaining new species of host trees.

Best to eschew if to amanita-eating you are new!

Agreed, Paul.
By: RW Rockwell (Fungal Cowboy)
2010-05-01 21:39:23 PDT (-0700)

Fortunately, I’ve not observed either A. phalloides or A. ocreata in this immediate area. These two are clearly separate species. Just didn’t want an added perceived “texture” to the cocorra. ;-)

They shouldn’t.
By: Paul Derbyshire (Twizzler)
2010-05-01 21:26:15 PDT (-0700)

The real danger would be in confusing the two, in a place where both grow. But they aren’t all that alike. The real real danger would be in confusing it with Amanita phalloides in a place where that also grows.

Buyer beware…
By: RW Rockwell (Fungal Cowboy)
2010-05-01 20:50:57 PDT (-0700)

Interestingly, a panther cap (A. ameripanthera) emerged today (5-1-10) within two feet of the location of this A. calyptroderma specimen. Clearly a different species. However, my question is now this: do the two species intergrade at all?

A rather salient question, if one chooses to consume the A. calyptroderma. ;-)

Created: 2010-04-30 23:25:18 PDT (-0700)
Last modified: 2012-02-26 09:15:43 PST (-0800)
Viewed: 171 times, last viewed: 2018-11-06 16:17:37 PST (-0800)
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