Observation 63091: Oligoporus floriformis (Quél.) Gilb. & Ryvarden
When: 2011-02-05
No herbarium specimen

Notes: Appeared to be growing in soil, but there was a buried branch just by it. Leathery, but not tough. White cap surface, pores, and flesh. No particular odor, taste mild.

I was not able to find any spores, or anything else that looked interesting under the scope.

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Used references: Photo ID-d by J. Ginns (“best guess”).

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Add Comment
By: Sava Krstic (sava)
2011-02-19 12:18:14 CST (-0600)

Irene, thanks again. When I calibrated the scope, the factor for 1000x was .99. But my measurements may be inaccurate; I checked only a few spores, rather quickly. I may try to do it again, if I can manage the now dried specimens.

OK, but..
By: Irene Andersson (irenea)
2011-02-19 11:56:57 CST (-0600)

…if the scale at 1000x is accurate, I still think that the spores look a bit too large for floriformis (3.5-4.5 × 2-2.5 microns).
balsameus:(4-5 × 2.5-3 microns).
But I can’t rule out other possibilities in Oregon either.

By: Sava Krstic (sava)
2011-02-19 11:13:43 CST (-0600)

Irene, thanks for the comment. I didn’t taste these when I collected them, but did last night, though they are completely dry and crunchy now. The taste was bitter, but not immediately, and not strongly.

Mild taste?
By: Irene Andersson (irenea)
2011-02-18 09:26:32 CST (-0600)

Oligoporus floriformis has a bitter taste. Oligoporus balsameus is a lookalike with mild taste, fibrous cap surface and broader spores than floriformis. It looks like these are around 5×3 microns. But Oligoporus is a difficult genus..

By: Sava Krstic (sava)
2011-02-06 13:25:52 CST (-0600)

Got the spore print. 5 × 2 &micro.

Created: 2011-02-06 01:36:58 CST (-0600)
Last modified: 2013-03-06 02:18:18 CST (-0600)
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