Observation 32341: Trechispora hymenocystis (Berk. & Broome) K.H. Larss.

This was found under a log in the older, unburned forest. The spiny spores and the shallow tubes, and habitat lead me to call it T. mollusca, which I thought was the only described tubular species in the genus. But I sent ITS sequence and the links to this observation to Dr. Karl-Henrick Larrson, and here is what he says:

“I have a lot of Trechispora ITS sequences and they show a remarkably high diversity. I include our mollusca sequence and I also checked your mollusca [i.e., this collection] against our sequences and my conclusion is that it is hymenocystis. I would have suggested that already from the photo: very soft and delicate, irregular pores, no sterile margin. Mollusca usually looks more like a typical monomitic, resupinate Poria.”

[admin – Sat Aug 14 02:03:19 +0000 2010]: Changed location name from ‘Mt. Vision, Pt. Reyes National Seashore, Marin Co, CA’ to ‘Mount Vision, Point Reyes National Seashore, Marin Co., California, USA

Species Lists



Proposed Names

-18% (2)
Used references: Hjortstam, Larsson and Ryvarden Vol 8, The Corticiaceae of Northern Europe
Based on microscopic features: spiny spores
83% (1)
Eye3 Eyes3
Recognized by sight: I originially Identified this as T. mollusca, but sent the photos and sequence to Dr. Karl-Henrick Larrson.
Based on chemical features: I sent ITS sequence of this to Karl-Henrick Larrson who compared to it his Trechispora sequences, I’ve added his email in the comments.

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Eye3 = Observer’s choice
Eyes3 = Current consensus


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where did the species epitat “mollusca” come from??
By: Debbie Viess (amanitarita)
2010-01-21 13:42:00 CST (-0500)

Created: 2010-01-21 12:18:46 CST (-0500)
Last modified: 2010-08-14 17:23:21 CDT (-0400)
Viewed: 265 times, last viewed: 2018-09-14 11:34:49 CDT (-0400)
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