Observation 30246: Inocybe geophylla (Bull.) P. Kumm.

When: 2009-12-12

Collection location: San Pablo Reservoir, Contra Costa Co., California, USA [Click for map]

Who: Richard Sullivan (enchplant)

No specimen available


spores at 1000x 8-9µm x 5-5.5µm
This shows the cap after 2 days. Note the brown gills.
Abundant pleurocystidia, encrusted. Here seen at 400x
Pleurocystidia at 100x
Pleurocystidia 1t 400x
This is a shaving of the pileipellis. It is not a section it is just the outer layer peeled off at 400x

Proposed Names

-30% (3)
Recognized by sight: Pale brown spore print
Based on microscopic features: Spores smooth inamyloid ellipsoidal 8-9µm x 5-5.5µm
56% (1)
Recognized by sight
Based on microscopic features

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Eye3 = Observer’s choice
Eyes3 = Current consensus


Add Comment
Not Hebeloma
By: Douglas Smith (douglas)
2009-12-16 10:29:21 +03 (+0300)

Can’t be Hebeloma with pleurocystidia, Hebeloma doesn’t have pleurocystidia. The spores weren’t quite right for Hebeloma either. The cap surface doesn’t appear to have hyphae in a gelatin matrix, just a cutis of fibrous hyphae. These look like Inocybe. I believe the only off-white Inocybe in California is just I. geophylla.

By: Richard Sullivan (enchplant)
2009-12-16 10:05:48 +03 (+0300)

It had a pretty faint spermatic odor. Nothing really outstanding.

By: Alan Rockefeller (Alan Rockefeller)
2009-12-16 01:52:33 +03 (+0300)

What does it smell like?

Cap not viscid
By: Richard Sullivan (enchplant)
2009-12-16 01:23:50 +03 (+0300)

Yeah Doug, I should have done the detail work with the microscope, but I just ran out of time.
Anyhow lots of pleurocystidia, encrusted. Cap is fibrillose, not viscid. No particular odor.

Cap viscid?
By: Douglas Smith (douglas)
2009-12-14 11:59:37 +03 (+0300)

Did you check if the cap was viscid here? And you need to look at the cystidia, what do the cystidia look like here? Were there pleurocystidia?

Was there any odor to the mushroom?

Created: 2009-12-14 03:27:53 03 (0300)
Last modified: 2009-12-14 03:27:53 03 (0300)
Viewed: 70 times, last viewed: 2017-06-06 15:08:22 03 (0300)
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