Observation 5746: Tricholoma ustale (Fr.) P. Kumm.
When: 2007-12-16
Herbarium specimen reported

Notes: Ok, this is the same Trich. I found last year at the same time, and in the same place (well, other side of the same tree). This time I was able to get it under the scope. Looking at Shanks’ monograph of Trich. of CA, the one clear difference between T. manzanitae, and T. dryophilum is the presence of cheilocystidia on the gill edge, T. dryophilum has them, and T. manzanitae does not. There are also macro features that are different, but these seem more subtle, tones of brown, presences of yellow on stipe, taste is bitter or not, and such.

Anyway, the micro shot here is of a gill edge at 400×. The gill edge is clean and undamaged showing the basidia and budding spores, but there are no cystidia here. I looked up and down two gill edges, and no cystidia were found.

Otherwise these only differ from the description of T. manzanitae is that they were found under live oak, but some small manzanita might have been near by. And there doesn’t apear to be a band of yellow at the apex of the stipe.

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Created: 2007-12-28 00:04:47 CST (-0500)
Last modified: 2013-03-04 23:10:35 CST (-0500)
Viewed: 43 times, last viewed: 2016-11-15 03:31:24 CST (-0500)
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