Notes: Low quality pics at first, then higher quality when on my hand.
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albocreata can be very easily separate from sp-S01 and its ilk. The former has (on average) subglobose to broadly ellipsoid spores. The latter has spores that are (on average) ellipsoid.
On the WAO site look the values of bold-faced “Q” in the “basidiospores” data field of the technical tabs of the two species. Bold-face “Q” is the range of the average length/width ratio of spores from single fruiting bodies. Dr. Bas pointed out that unbolded “Q” (length/width ratio for a single spore) can be translated into commonly used terms for spore shape:
1.0 to 1.05 – globose
1.05 – 1.15 – subglobose
1.15 – 1.30 – broadly ellipsoid
1.30 – 1.60 – ellipsoid
1.60 – 2.0 – elongate
2.0 – 3.0 – cylindric
3.0 and greater – bacilliform
Since the ratio stands in for shape, it is incredibly useful in characterizing spores and plays a fundamental role in the sporographs that graphically characterize spores (species-by-species) on the WAO website.
The other collection had a brown (orange-brown in one photo, brownish yellow in another) center of the cap and a very white margin.
The present entity has a basically yellow cap with the kind of brownish yellow center that can come or go with age, which is a characeristic of some basically yellow-capped mushroom like sp-S01 and (reputedly) russuloides.
I hope to get lots of sample of such collections sampled for sequencing some day. I would really like to know if we have one taxa or more that look like your photos.
This is discussed in-depth at this observation of what I believe is the same species? If you could go over this observation and tell me what you think?
(also my observation)
There was some discussion about ringless pantherina.
(there was no veil present on any of the specimens in both these observation)
Amanita albocreata is pure white outside the center of the cap and is pretty much limited to Northern hardwood-Hemlock forest. I think we found albocreata with a solitary Balsam Fir on the Island of Newfoundland; but the species seems almost exclusively (if not exclusively) linke with Canadian Hemlock (Tsuga canadensis) on the mainland of NE North America.
Your material might be the species described here:
Created: 2013-06-07 20:28:33 ADT (-0300)
Last modified: 2013-06-07 20:28:37 ADT (-0300)
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