Observation 183352: Mixed collection
When: 2014-10-12
No herbarium specimen
0 Sequences

Seen at the Patrice Benson Memorial NAMA 2014 Foray display table

Proposed Names

-21% (4)
Recognized by sight: I forget the species name for the western NA “strangulated Amanita.”
56% (1)
Recognized by sight: See latest comment.

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

Eye3 = Observer’s choice
Eyes3 = Current consensus


Add Comment
Looking again…
By: Dave W (Dave W)
2014-10-17 06:32:47 PDT (-0700)

The two smaller ones in the back of photo #1 appear to have a different volval structure than the large ones. Large ones show friable gray volval sac and no basal bulb. Small ones appear to show a basal bulb with marginate short-limbate volva, which does match porphyria. In the photo where the mushrooms are placed into the tray, smaller ones are somewhat hidden, but it looks to me like the cap margin for one of them lacks true striations. Porphyria has a radially streaked cap that may be misinterpreted as striate. Larger ones are clearly striate.

Even if one specimen from this collection was tested for spore amyloidity, that would fail to detect the possible mixing of species coming from both subgenus Amanita and subgenus Lepidella.

I question whether these actually have pv.
By: Dave W (Dave W)
2014-10-17 06:05:15 PDT (-0700)

The small threadlike “rings” may be due to something other than an eroded annulus; perhaps a tiny bit of UV (maybe limbus internus) got stuck to the upper stipe.

Did anyone check to see if the spores were amyloid?

To my knowledge, a species of section Validae showing distinctly striate cap margin would be unusual.

A. porphyria is in section Validae (it has PV, so it can’t be a grisette)
By: Christian (Christian Schwarz)
2014-10-16 21:28:47 PDT (-0700)

Created: 2014-10-16 14:10:57 PDT (-0700)
Last modified: 2014-10-17 06:20:42 PDT (-0700)
Viewed: 46 times, last viewed: 2017-06-19 00:00:13 PDT (-0700)
Show Log