Observation 33889: Psathyrella longistriata (Murrill) A.H. Sm.

When: 2010-01-29

Collection location: Los Trancos Preserve, Palo Alto, California, USA [Click for map]

Who: Douglas Smith (douglas)

Specimen available

Found under big leaf maple, on moss-covered rotting log.

The first micro-shot is of the gill edge at 400x in KOH. Here the cystidia are lageniform, with sub-capitate apeces, the cell walls are thick-ish but not that thick. Also similar pleurocystidia were obs. and numerous.

The second micro-shot is of spores from the gill at 400x in KOH. The spores are ellipsoid, smooth, and have a small germ pore (hard to see in the photo, sorry). The spores are not truncate, but smoothly ellipsoid to slightly pointed.

It seems that the non-truncate spores is the main feature that keep these as P. longistriata, if they were truncate with a larger germ pore they would be P. ellenae.

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Created: 2010-02-20 16:31:25 CET (+0100)
Last modified: 2010-02-20 16:31:25 CET (+0100)
Viewed: 79 times, last viewed: 2017-06-07 01:29:38 CEST (+0200)
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