When: 2017-06-07

Collection location: Sweet Valley, Pennsylvania, USA [Click for map]

Who: Dave W (Dave W)

No specimen available

Notes:
These all come from an area where mature Norway spruce and pine (Scotch or Virginia, not sure) occupy planted rows/plots bordering native forest. There is hemlock in the native forest. But these mushrooms all seem to be associated with spruce/pine, none observed where hemlock was present in the native forest. A collection previously made in this same location had spores with significant percentage verging on broadly ellipsoid, obs 277980. So, this got me wondering about whether these may be other than praecox.

Several subsequent collections (seen here) produced spores globose/subglobose. Very few broadly ellipsoid. Is the number of broadly ellipsoid spores seen in 277980 enough evidence to suggest an hypothesis alternative to “praecox”? I admit to that I have not done the statistical analysis necessary to advance such a discussion. But… the mushrooms seen in this observation all featured globose/subglobose spores.

Conclusion: The hypothesis that these spruce/pine associates are something other than Amanita praecox is not supported. My opinion: Amanita praecox likes some of these imported conifers.

Images

Proposed Names

87% (1)
Recognized by sight
Based on microscopic features: Spores. See Notes.

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= Observer’s choice
= Current consensus

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Created: 2017-06-11 21:51:50 CDT (-0500)
Last modified: 2017-06-11 21:51:56 CDT (-0500)
Viewed: 22 times, last viewed: 2019-08-13 07:56:19 CDT (-0500)
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