Observation 143344: Amanita subcokeri Tulloss nom. prov.

Birch/hemlock woods. Fruiting during dry weather.

Gills with sordid yellowish tinge.

Proposed Names

86% (1)
Eye3 Eyes3
Recognized by sight
Used references: All obervable characters seem to match the onilne Amanita Studies description.
Based on microscopic features: Spore lengths topping out just under 12 mu, with generally 1.6<Q<1.9. Some spores with depressed mid section.

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Eye3 = Observer’s choice
Eyes3 = Current consensus


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Thanks Dave,
By: groundhog
2013-10-25 11:13:05 PDT (-0700)

This material has been recieved and accessioned into Rod’s herbarium.

Hi Rod.
By: Dave W (Dave W)
2013-08-20 16:27:26 PDT (-0700)

I’m trying to figure out where my mixup occurred on the Q for subcokeri. Of course, you are correct on both accounts… the recorded Qs as well as the ones observable in my photo. In each case the average value well exceeds 1.3.

I must’ve been simultaneously looking at the wrong photo as well as the wrong AS description. I’ll change the notes on the obs. One of the dangers of recording/posting lots of diverse material.


Hello, David.
By: R. E. Tulloss (ret)
2013-08-20 15:52:07 PDT (-0700)

The Q values of the spores in your image looks higher than 1.3 a lot of the time…much closer to the average subcokeri sporem which is Q = 1.84. The lowest Q I’ve ever recorded for subcokeri is 1.33; and the number of spores measured is over 500.

Very best,


Created: 2013-08-20 11:32:17 PDT (-0700)
Last modified: 2018-01-03 20:47:11 PST (-0800)
Viewed: 44 times, last viewed: 2018-01-04 14:41:49 PST (-0800)
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