Observation 24120: Ganoderma oregonense Murrill

When: 2009-08-07

Collection location: near Echo Summit/Highway 50, California, USA [Click for map]

Who: Ron Pastorino (Ronpast)

No specimen available

Notes:

[admin – Sat Aug 14 02:03:34 +0000 2010]: Changed location name from ‘Near Echo Summit/Hwy 50, Ca.’ to ‘near Echo Summit/Highway 50, California, USA’

Images

Proposed Names

78% (4)
Recognized by sight: My mistake. Ganoderma is correct about Ganoderma. Ganoderma oregonense is the most likely candidate.
39% (2)
Recognized by sight: My mistake. Ganoderma is correct about Ganoderma. Ganoderma oregonense is the most likely candidate.

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= Observer’s choice
= Current consensus

Comments

Add Comment
Ganoderma tsugae ..
By: Ron Pastorino (Ronpast)
2009-08-18 05:10:34 CEST (+0200)
it most likely is. Have to agree with Ganoderma and go with the evidence as it stands.
Ganoderma sp??
By: Ron Pastorino (Ronpast)
2009-08-15 19:54:35 CEST (+0200)

I don’t know how much weight should be put on limited spore measurements of a young specimen. Just read in Trudell and Ammirati’s latest book, “Mushrooms of the Pacific Northwest”, that “Ganoderma oregonense and G. tsugae are almost impossible to separate from each other and might actually represent only one species”.
Other literature does mention larger and truncated spores for the G. oregonense, which normally is enough for even the most timid splitter. But I guess DNA will have the last word on that.
The other problem is that G. tsugae doesn’t seem to have been identified in California. There are some Western Hemlocks in the high Sierras but I couldn’t say what these were growing on and the bark seems a little large/thick for Hemlock?

Spores not big enough?
By: Ron Pastorino (Ronpast)
2009-08-13 04:30:58 CEST (+0200)
I only took home the smaller undeveloped specimen that had a minimum pore surface. Managed to observe a few spores by sectioning the tube layer(see photos). Only measured a few spores and they seemed to be about 9.5 X 6.0 microns, which apparently is a little small for Ganoderma oregonense. They were roughened. Can’t find any information on Ganoderma tsugae var. tsugae?

Created: 2009-08-08 05:58:32 CEST (+0200)
Last modified: 2011-03-17 14:00:34 CET (+0100)
Viewed: 235 times, last viewed: 2019-01-30 10:30:13 CET (+0100)
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